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TOU Hideki
Graduate School of Science / Division of Physics
Professor

Researcher basic information

■ Research Areas
  • Natural sciences / Magnetism, superconductivity, and strongly correlated systems

Research activity information

■ Award
  • 2012 The Physical Society of Japan, JPSJ Papers of Editor's Choice Vol.81 (2012) 103702, Pressure Study of BiS2-­Based Superconductors Bi4O4S3 and La(O,F)BiS2
    KOTEGAWA HISASHI, TOMITA YUSUKE, TOU HIDEKI
    Official journal

  • 2008 日本物理学会JPSJ, JPSJ注目論文賞, Abrupt Emergence of Pressure-Induced Superconductivity of 34 K in SrFe2As2: A Resistivity Study under Pressure
    KOTEGAWA HISASHI, TOU HIDEKI
    Official journal

■ Paper
  • Hisashi Kotegawa, Akira Nakamura, Vu Thi Ngoc Huyen, Yuki Arai, Hideki Tou, Hitoshi Sugawara, Junichi Hayashi, Keiki Takeda, Chihiro Tabata, Koji Kaneko, Katsuaki Kodama, Michi To Suzuki
    Dec. 2024, Physical Review B, 110(21) (21)
    Scientific journal

  • Hisashi Kotegawa, Hiroto Tanaka, Yuta Takeuchi, Hideki Tou, Hitoshi Sugawara, Junichi Hayashi, Keiki Takeda
    Appropriate symmetry breaking generates an anomalous Hall (AH) effect, even in antiferromagnetic (AFM) materials. Itinerant magnets with d electrons are typical examples that show a significant response. By contrast, the process by which a response emerges from f-electron AFM structures remains unclear. In this Letter, we show that an AFM material, Ce_{2}CuGe_{6}, yields a large AH conductivity (AHC) of 550  Ω^{-1} cm^{-1}, which exceeds the values previously reported in d-electron AFM materials. Observed features, including the scaling relation against electrical conductivity, suggest that this AH transport is induced cooperatively by both intrinsic and extrinsic mechanisms derived from the AFM structure.
    Sep. 2024, Physical review letters, 133(10) (10), 106301 - 106301, English, International magazine
    Scientific journal

  • Yuki Arai, Junichi Hayashi, Keiki Takeda, Hideki Tou, Hitoshi Sugawara, Hisashi Kotegawa
    Jun. 2024, Journal of the Physical Society of Japan, 93(6) (6)
    Scientific journal

  • Kazuyuki Omasa, Takuya Komoda, Yusuke Nakamura, Eiichi Matsuoka, Hisashi Kotegawa, Hideki Tou, Takahiro Sakurai, Hitoshi Ohta, Ai Nakamura, Yoshiya Homma, Dai Aoki, Daisuke Satoh, Mitsuhiro Yoshida, Sanu Mishra, Ilya Sheikin, Hisatomo Harima, Hitoshi Sugawara
    Mar. 2024, Journal of the Physical Society of Japan, 93(3) (3)
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Hisashi Kotegawa, Yoshiki Kuwata, Vu Thi Ngoc Huyen, Yuki Arai, Hideki Tou, Masaaki Matsuda, Keiki Takeda, Hitoshi Sugawara, Michi-To Suzuki
    Abstract Specific antiferromagnetic (AF) spin configurations generate large anomalous Hall effects (AHEs) even at zero magnetic field through nonvanishing Berry curvature in momentum space. In addition to restrictions on AF structures, suitable control of AF domains is essential to observe this effect without cancellations among its domains; therefore, compatible materials remain limited. Here we show that an orthorhombic noncollinear AF material, NbMnP, acquired AF structure-based AHE and controllability of the AF domains. Theoretical calculations indicated that a large Hall conductivity of ~230 Ω−1cm−1 originated from the AF structure of NbMnP. Symmetry considerations explained the production of a small net magnetization, whose anisotropy enabled the generation and cancellation of the Hall responses using magnetic fields in different directions. Finally, asymmetric hysteresis in NbMnP shows potential for the development of controllability of responses in AF materials.
    Springer Science and Business Media LLC, Oct. 2023, npj Quantum Materials, 8(1) (1)
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Masahiro Manago, Ayano Ishigaki, Hideki Tou, Hisatomo Harima, Hiroshi Tanida, Hisashi Kotegawa
    American Physical Society (APS), Aug. 2023, Physical Review B, 108(8) (8), English
    [Refereed]
    Scientific journal

  • Yuya Nagase, Masahiro Manago, Junichi Hayashi, Keiki Takeda, Hideki Tou, Eiichi Matsuoka, Hitoshi Sugawara, Hisatomo Harima, Hisashi Kotegawa
    Mar. 2023, Physical Review B
    Scientific journal

  • M. Horie, E. Matsuoka, H. Sugawara, H. Kotegawa, H. Tou, T. Terashima, S. Uji
    Mar. 2022, Journal of Physics: Conference Series, 2164(1) (1)
    International conference proceedings

  • Yuichiro Noma, Hisashi Kotegawa, Tetsuro Kubo, Hideki Tou, Hisatomo Harima, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki, Kohei M. Itoh, Ai Nakamura, Yoshiya Homma, Fuminori Honda, Dai Aoki
    Jul. 2021, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 90(7) (7), English
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • K. Rana, H. Kotegawa, R. R. Ullah, E. Gati, S. L. Bud'ko, P. C. Canfield, H. Tou, V. Taufour, Y. Furukawa
    American Physical Society, May 2021, Physical Review B, 103(17) (17), English
    Scientific journal

  • Kaneyoshi Jun, Yoshinaga Takeo, Matsuoka Eiichi, Kotegawa Hisashi, Tou Hideki, Hirose Hishiro T., Terashima Taichi, Uji Shinya, Sugawara Hitoshi
    Physical Society of Japan, Mar. 2021, Journal of the Physical Society of Japan, 90(3) (3), 34712 - 34712

  • Masahiro Manago, Hisashi Kotegawa, Hideki Tou, Hisatomo Harima, Hiroshi Tanida
    Physical Society of Japan, Feb. 2021, Journal of the Physical Society of Japan, 90(2) (2), 023702 - 023702
    Scientific journal

  • Yoshiki Kuwata, Hisashi Kotegawa, Hideki Tou, Hisatomo Harima, Qing-Ping Ding, Keiki Takeda, Junichi Hayashi, Eiichi Matsuoka, Hitoshi Sugawara, Takahiro Sakurai, Hitoshi Ohta, Yuji Furukawa
    American Physical Society (APS), Nov. 2020, Physical Review B, 102(20) (20)
    Scientific journal

  • Tomoya Kubo, Eiich Matsuoka, Hisashi Kotegawa, Hideki Tou, Ai Nakamura, Dai Aoki, Hisatomo Harima, Hitoshi Sugawara
    Aug. 2020, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 89(8) (8), English
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tetsuro Kubo, Hideki Tou, Ryoma Miyake, Haruki Matsuno, Hisashi Kotegawa, Hisatomo Harima, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato, Yoshihiko Ihara, Takayuki Goto, Michihiro Hirata, Takahiko Sasaki
    Journal of the Physical Society of Japan, Mar. 2020, Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)
    [Refereed]
    International conference proceedings

  • Takashi Matsui, Haruki Matsuno, Hisashi Kotegawa, Hideki Tou, Koichiro Suekuni, Takumi Hasegawa, Hiromi I. Tanaka, and Toshiro Takabatake
    Mar. 2020, JPS Conf. Proc., 30, 011075, English, International magazine
    [Refereed]

  • Hisashi Kotegawa, Masaaki Matsuda, Feng Ye, Yuki Tani, Kohei Uda, Yoshiki Kuwata, Hideki Tou, Eiichi Matsuoka, Hitoshi Sugawara, Takahiro Sakurai, Hitoshi Ohta, Hisatomo Harima, Keiki Takeda, Junichi Hayashi, Shingo Araki, Tatsuo C. Kobayashi
    American Physical Society (APS), Feb. 2020, Physical Review Letters, 124(8) (8)
    Scientific journal

  • R. Takeuchi, Y. Kishimoto, H. Kotegawa, H. Harima, Y. Homma, F. Honda, A. Nakamura, Y. Shimizu, D. X. Li, D. Aoki, H. Tou
    Journal of the Physical Society of Japan, Feb. 2020, JPS Conf. Proc., 29, 013001 1 - 013001 6, English
    [Refereed]
    International conference proceedings

  • Tetsuro Kubo, Hideki Tou, Hisashi Kotegawa, Hisatomo Harima, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato
    Journal of the Physical Society of Japan, Feb. 2020, Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena
    International conference proceedings

  • Takashi Matsui, Haruki Matsuno, Hisashi Kotegawa, Hideki Tou, Koichiro Suekuni, Takumi Hasegawa, Hiromi I. Tanaka, Toshiro Takabatake
    Feb. 2020, JPS Conf. Proc., 29, 013008, English, International magazine
    [Refereed]

  • Hisashi Kotegawa, Masaaki Matsuda, Feng Ye, Yuki Tani, Kohei Uda, Yoshiki Kuwata, Hideki Tou, Eiichi Matsuoka, Hitoshi Sugawara, Takahiro Sakurai, Hitoshi Ohta, Hisatomo Harima, Keiki Takeda, Junichi Hayashi, Shingo Araki, Tatsuo C. Kobayashi
    Feb. 2020, PHYSICAL REVIEW LETTERS, 124(8) (8), English
    Scientific journal

  • Taisuke Aoyama, Hisashi Kotegawa, Hideki Tou, Noriaki Kimura, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Ōnuki
    Elsevier B.V., Oct. 2019, Physica B: Condensed Matter, 570, 349 - 351, English
    Scientific journal

  • Hisashi Kotegawa, Eiichi Matsuoka, Toshiaki Uga, Masaki Takemura, Masahiro Manago, Noriyasu Chikuchi, Hitoshi Sugawara, Hideki Tou, Hisatomo Harima
    Physical Society of Japan, Sep. 2019, Journal of the Physical Society of Japan, 88(9) (9), 093702 - 093702
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Kei Matsushima, Hisashi Kotegawa, Yoshiki Kuwata, Hideki Tou, Jun Kaneyoshi, Eiichi Matsuoka, Hitoshi Sugawara, Takahiro Sakurai, Hitoshi Ohta, Hisatomo Harima
    American Physical Society, Sep. 2019, Physical Review B, 100(10) (10), English
    Scientific journal

  • Yuki Nakajima, Zenjiro Mita, Hiroshi Watanabe, Yoshiyuki Ohtsubo, Takahiro Ito, Hisashi Kotegawa, Hitoshi Sugawara, Hideki Tou, Shin-ichi Kimura
    The anisotropic changes in the electronic structure of a metal-to-insulator
    transition (MIT) material, RuAs, with two-step phase transition are reported by
    using polarized optical conductivity [$\sigma(\omega)$] spectra,
    angle-integrated photoelectron (PE) spectra, and band calculations based on
    local density approximation (LDA). Both the PE and $\sigma(\omega)$ spectra not
    only in the high-temperature (HT) phase but also in the low-temperature (LT)
    phase as well as the energy gap formation owing to the MIT were almost
    consistent with those derived from the LDA band calculations, so the
    fundamental electronic structure in the HT and LT phases can be explained
    without electron correlations. However, the electronic structure in the middle
    phase between the HT and LT phases has not been clarified. The polarized
    $\sigma(\omega)$ spectra revealed not only the anisotropic energy gap formation
    but also the anisotropic gap-opening temperature, i.e., the energy gap along
    the $c$ axis in the HT phase starts to open near the higher transition
    temperature, but that along the $b$ axis opens below the lower transition
    temperature. The finding suggests that the two-step MIT originates from the
    an
    Aug. 2019, Phys. Rev. B. 100, 125151 (2019)
    Scientific journal

  • Aoyama Taisuke, Kotegawa Hisashi, Kimura Noriaki, Yamamoto Etsuji, Haga Yoshinori, Onuki Yoshichika, Tou Hideki
    Jun. 2019, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 88(6) (6)
    [Refereed]

  • K. Rana, H. Kotegawa, R. R. Ullah, J. S. Harvey, S. L. Bud'Ko, P. C. Canfield, H. Tou, V. Taufour, Y. Furukawa
    American Physical Society, Jun. 2019, Physical Review B, 99(21) (21), English
    Scientific journal

  • Matsui, Takashi, Matsuno, Haruki, Kotegawa, Hisashi, Tou, Hideki, Suekuni, Koichiro, Hasegawa, Takumi, Tanaka, Hiromi, I, Takabatake, Toshiro
    Tetrahedrite Cu12Sb4S13 shows a metal-semiconductor transition (MST) at T-MST = 85K. We have studied the mechanism of the MST by measurements of Cu-NMR. Above T-MST, the Cu-NMR spectrum consists of signals from a tetrahedral Cu(1) 12d site and a trigonally coordinated Cu(2) 12e site. Analyses of the spectra at 95 and 20K yield NMR and nuclear quadrupole resonance (NQR) parameters above and below T-MST]. The Cu(1) signal does not show clear quadrupole splitting, which remains unchanged on cooling across T-MST. On the other hand, the Cu(2) signal at T > T-MST clearly shows the quadrupole splitting characterized by a quadrupole frequency nu(Q)(2) approximate to 18.6MHz and an asymmetry parameter eta(2) approximate to 0.03. Below T-MST, the values of nu(Q)(2) and eta(2) change markedly. Such marked changes in NQR parameters provide evidence of a remarkable change in the local electronic structure around the Cu(2) site. Together with nu(Q) from NMR spectra and that from first-principles calculation, we conclude that the Cu(2) atoms are displaced from the sulfur triangles below TMST. We also found that the NMR Knight shift and the spin-lattice relaxation rate divided by temperature, 1/T1
    PHYSICAL SOC JAPAN, May 2019, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 88(5) (5)
    [Refereed]
    Scientific journal

  • Taisuke Aoyama, Fumiaki Kobayashi, Hisashi Kotegawa, Hideki Tou, Petr Doležal, Dominik Kriegner, Pavel Javorský, Klára Uhlířová
    Elsevier B.V., May 2018, Physica B: Condensed Matter, 536, 320 - 322, English
    [Refereed]
    Scientific journal

  • Yasuki Kishimoto, Haruki Matsuno, Hisashi Kotegawa, Hideki Tou, Hiraku Saito, Hiroshi Amitsuka, Yoshiya Homma, Ai Nakamura, Dexin Li, Fuminori Honda, Dai Aoki
    May 2018, PHYSICA B-CONDENSED MATTER, 536, 564 - 566, English
    [Refereed]
    Scientific journal

  • H. Kotegawa, K. Takeda, Y. Kuwata, J. Hayashi, H. Tou, H. Sugawara, T. Sakurai, H. Ohta, Harima
    A single crystal of RuAs obtained with the Bi-flux method shows obvious successive metal-insulator transitions at T(MI1)∼255 K and T(MI2)∼195 K. The x-ray diffraction measurement reveals the formation of a superlattice of 3 x 3 x 3 of the original unit cell below T(MI2), accompanied by a change of the crystal system from the orthorhombic structure to the monoclinic one. Simple dimerization of the Ru ions is not seen in the ground state. The multiple As sites observed in the nuclear quadrupole resonance spectrum also demonstrate the formation of the superlattice in the ground state, which is clarified to be nonmagnetic. The divergence in 1/T1 at T(MI1) shows that a symmetry lowering by the metal-insulator transition is accompanied by strong critical fluctuations of some degrees of freedom. Using the structural parameters in the insulating state, the first-principles calculation reproduces successfully the reasonable size of nuclear quadrupole frequencies ν(Q) for the multiple As sites, ensuring the high validity of the structural parameters. The calculation also gives a remarkable suppression in the density of states near the Fermi level, although the gap opening is insufficient. A coupled modulation of the calculated Ru d-electron numbers and the crystal structure proposes the formation of a charge density wave in RuAs. Some lacking factors remain, but it is shown that a lifting of degeneracy protected by the nonsymmorphic symmetry through the superlattice formation is a key ingredient for the metal-insulator transition in RuAs.
    American Physical Society, May 2018, Phys. Rev. Mate., 2(5) (5), 055001/1 - 10, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • H. Kotegawa, S. Nakahara, K. Matsushima, H. Tou, E. Matsuoka, H. Sugawara, H. Harima
    Elsevier B.V., May 2018, Physica B: Condensed Matter, 536, 810 - 812, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Matsushima Kei, Nakahara Shingo, Kotegawa Hisashi, Tou Hideki, Matsuoka Eiichi, Sugawara Hitoshi, Sakurai Takahiro, Ohta Hitoshi, Harima Hisatomo
    The Physical Society of Japan, 2018, Meeting Abstracts of the Physical Society of Japan, 73, 1930 - 1930, Japanese

  • Nakajima Yuki, Kimura Shin-ichi, Mita Zenjiro, Hibi Jigen, Kamei Syun, Watanabe Hiroshi, Kotegawa Hisashi, Sugawara Hitoshi, Tou Hideki, Ito Takahiro
    The Physical Society of Japan, 2018, Meeting Abstracts of the Physical Society of Japan, 73, 1043 - 1043, Japanese

  • Kaneyoshi Jun, Yoshinaga Takeo, Matsuoka Eiichi, Kotegawa Hisashi, Tou Hideki, Hirose Hishiro, Terashima Taichi, Uji Shinya, Sugawara Hitoshi
    The Physical Society of Japan, 2018, Meeting Abstracts of the Physical Society of Japan, 73, 1644 - 1644, Japanese

  • Superlattice formation lifting degeneracy protected by nonsymmorphic symmetry through a metal-insulator transition in RuAs
    KOTEGAWA Hisashi, Keiki Takeda, KUWATA Yoshiki, Junichi Hayashi, TOU Hideki, SUGAWARA Hitoshi, SAKURAI Takahiro, OTA Hitoshi, HARIMA Hisatomo
    A single crystal of RuAs obtained with the Bi-flux method shows obvious successive metal-insulator transitions at T(MI1)∼255 K and T(MI2)∼195 K. The x-ray diffraction measurement reveals the formation of a superlattice of 3 x 3 x 3 of the original unit cell below T(MI2), accompanied by a change of the crystal system from the orthorhombic structure to the monoclinic one. Simple dimerization of the Ru ions is not seen in the ground state. The multiple As sites observed in the nuclear quadrupole resonance spectrum also demonstrate the formation of the superlattice in the ground state, which is clarified to be nonmagnetic. The divergence in 1/T1 at T(MI1) shows that a symmetry lowering by the metal-insulator transition is accompanied by strong critical fluctuations of some degrees of freedom. Using the structural parameters in the insulating state, the first-principles calculation reproduces successfully the reasonable size of nuclear quadrupole frequencies ν(Q) for the multiple As sites, ensuring the high validity of the structural parameters. The calculation also gives a remarkable suppression in the density of states near the Fermi level, although the gap opening is insufficient. A coupled modulation of the calculated Ru d-electron numbers and the crystal structure proposes the formation of a charge density wave in RuAs. Some lacking factors remain, but it is shown that a lifting of degeneracy protected by the nonsymmorphic symmetry through the superlattice formation is a key ingredient for the metal-insulator transition in RuAs.
    American Physical Society (APS), 2018, Phys. Rev. Materials., 2(5) (5), 055001/1 - 10, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Nonsaturating large magnetoresistance in the high carrier density nonsymmorphic metal CrP
    Q. Niu, W. C . Yu, E. I, Paredes Aulestia, Y. J . H u, Kwing To Lai, KOTEGAWA Hisashi, MATSUOKA Eiichi, SUGAWARA Hitoshi, TOU Hideki, D. Sun, F. F. Balakirev, Y. Yanase, Swee K. Goh
    2018, PHYSICAL REVIEW B, 99, 125126/1 - 6, English
    [Refereed]
    Scientific journal

  • NMR study on anomalous superconducting phase diagram in UBe13
    MATSUNO Haruki, Kyohei Morita, KOTEGAWA Hisashi, TOU Hideki, HAGA Yoshinori, YAMAMOTO Etsuji, ONUKI Yoshichika
    2018, Physica B-Cond. Matter, 536, 519 - 521, English
    [Refereed]
    Scientific journal

  • NMR spectrum analysis for CrAs at ambient pressure
    KOTEGAWA Hisashi, S. Nakahara, K. Matsushima, TOU Hideki, MATSUOKA Eiichi, SUGAWARA Hitoshi, HARIMA Hisatomo
    2018, Physica B-Cond. Matter, 536, 810 - 812, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Appearance of the octupole ordered phase IV in CexLa1-xB6
    M. Sera, K. Kunimori, T. Matsumura, A. Kondo, H. Tanida, TOU Hideki, F. Iga
    2018, Phys. Rev. B, 97(19) (19), 184417/1 - 15, English
    [Refereed]
    Scientific journal

  • Yuichiro Noma, Hisashi Kotegawa, Tetsuro Kubo, Hideki Tou, Hisatomo Harima, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Ōnuki, Kohei M. Itoh, Eugene E. Haller, Ai Nakamura, Yoshiya Homma, Fuminori Honda, Dai Aoki
    Physical Society of Japan, 2018, Journal of the Physical Society of Japan, 87(3) (3), 033704, English
    [Refereed]
    Scientific journal

  • 75As-NQR Investigation of the Relationship between the Instability of Metal - Insulator Transition and Superconductivity in Ru1-xRhxAs
    KUWATA Yoshiki, KOTEGAWA Hisashi, SUGAWARA Hitoshi, SAKURAI Takahiro, OTA Hitoshi, TOU Hideki
    2018, J. Phys. Soc. Jpn., 87(7) (7), 073703/1 - 5, English
    [Refereed]
    Scientific journal

  • AOYAMA Taisuke, Fumiaki Kobayashi, KOTEGAWA Hisashi, TOU Hideki, Petr Dolezal, Dominik Kriegner, Pavel Javorsky, Klara Uhlirova
    Elsevier BV, 2018, Physica B-Cond. Matter, 536, 320 - 322, English
    [Refereed]
    Scientific journal

  • Taisuke Aoyama, Tetsuro Kubo, Haruki Matsuno, KOTEGAWA Hisashi, TOU Hideki, Akihiro Mitsuda, Yutaro Nagano, Nobutaka Araoka, Hirohumi Wada, Yuh Yamada
    Physical Society of Japan, 2018, J. Phys. Soc. Jpn., 87(12) (12), 124713/1 - 5, English
    [Refereed]
    Scientific journal

  • Yoshiki Kuwata, Hisashi Kotegawa, Hitoshi Sugawara, Takahiro Sakurai, Hitoshi Ohta, Hideki Tou
    Physical Society of Japan, 2018, Journal of the Physical Society of Japan, 87(7) (7), 073703/1 - 5, English
    [Refereed]
    Scientific journal

  • H. Yasuoka, T. Kubo, Y. Kishimoto, D. Kasinathan, M. Schmidt, B. Yan, Y. Zhang, H. Tou, C. Felser, A. P. Mackenzie, M. Baenitz
    Jun. 2017, PHYSICAL REVIEW LETTERS, 118(23) (23), English
    [Refereed]
    Scientific journal

  • H. Kotegawa, K. Matsushima, S. Nakahara, H. Tou, J. Kaneyoshi, T. Nishiwaki, E. Matsuoka, H. Sugawara, H. Harima
    Jun. 2017, JOURNAL OF PHYSICS-CONDENSED MATTER, 29(23) (23), 234002/1 - 6, English
    [Refereed]
    Scientific journal

  • H. Kotegawa, K. Matsushima, S. Nakahara, H. Tou, J. Kaneyoshi, T. Nishiwaki, E. Matsuoka, H. Sugawara, H. Harima
    Jun. 2017, JOURNAL OF PHYSICS-CONDENSED MATTER, 29(23) (23), 1 - 6, English
    [Refereed]
    Scientific journal

  • Q. Niu, W. C. Yu, K. Y. Yip, Z. L. Lim, H. Kotegawa, E. Matsuoka, H. Sugawara, H. Tou, Y. Yanase, Swee K. Goh
    Jun. 2017, NATURE COMMUNICATIONS, 8, 15358/1 - 6, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Taisuke Aoyama, Tetsuro Kubo, Haruki Matsuno, Hisashi Kotegawa, Hideki Tou, Akihiro Mitsuda, Yutaro Nagano, Nobutaka Araoka, Hirohumi Wada, Yuh Yamada
    Institute of Physics Publishing, Apr. 2017, Journal of Physics: Conference Series, 807(6) (6), 062002 - 1-5, English
    [Refereed]
    International conference proceedings

  • Yasuki Kishimoto, Hisashi Kotegawa, Eiichi Matsuoka, Hitoshi Sugawara, Hideki Tou
    Institute of Physics Publishing, Apr. 2017, Journal of Physics: Conference Series, 807(1) (1), 012005/1 - 5, English
    [Refereed]
    International conference proceedings

  • Haruki Matsuno, Kyohei Morita, Hisashi Kotegawa, Hideki Tou, Yoshinori Haga, Etsuji Yamamoto, Yoshichika O'Nuki
    Institute of Physics Publishing, Apr. 2017, Journal of Physics: Conference Series, 807(5) (5), 052015 - 1-6, English
    [Refereed]
    International conference proceedings

  • Matsushima Kei, Nakahara Shingo, Kotegawa Hisashi, Tou Hideki, Sugawara Hitoshi, Matsuoka Eiichi, Harima Hisatomo

    CrAsは直方晶Pnmaの対称性を持ち、T_N_～265[K]に磁気転移点を持つヘリカル磁性体である。加圧により磁気転移が抑制されることで超伝導相が現れることが知られており、Cr系物質としては初となる非従来型超伝導体であることが示唆されている。本研究では、CrAsの単結晶を用いて圧力下常磁性相での^75^As-NMR測定を行い、Knight Shiftや核スピン-格子緩和率を異なる磁場中で測定した。講演では主にCrAsの磁気揺らぎの異方性について議論する。

    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72, 2335 - 2335, Japanese

  • Nakajima Yuki, Mita Zenjiro, Hibi Jigen, Kamei Syun, Watanabe Hiroshi, Kotegawa Hisashi, Sugawara Hitoshi, Tou Hideki, Kimura Shin-ichi
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72, 1274 - 1274, Japanese

  • Uga Toshiaki, Kotegawa Hisashi, Sugawara Hitoshi, Matsuoka Eiichi, Tou Hideki
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72, 1823 - 1823, Japanese

  • kuwata Yoshiki, Kotegawa Hisashi, Takeda Keiki, Tou Hideki, Matsuoka Eiichi, Sugawara Hitoshi, Ohta Hitoshi, Sakurai Takahiro, Harima Hisatomo
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72, 1959 - 1959, Japanese

  • KUBO Tetsuro, KOTEGAWA Hisashi, TOU Hideki, HARIMA Hisatomo, HIGASHINAKA Ryuji, NAKAMA Akihiro, AOKI Yuji, SATO Hideyuki
    2017, Journal of Physics: Conf. Series, 807, 032006 - 1-6, English
    [Refereed]
    Scientific journal

  • Yasuki Kishimoto, Yosiki Awai, KOTEGAWA Hisashi, TOU Hideki, Yuji Muro, Koji Nakamura, Masafumi Sera, Toshiro Takabatake
    2017, Journal of Physics: Conf. Series, 807, 012014 - 1-6, English
    [Refereed]
    Scientific journal

  • Minami T., Kawamura T., Kotegawa H., Tou H., Matsuoka E., Sugawara H.
    The Physical Society of Japan (JPS), 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2272 - 2272, Japanese

  • Kishimoto Y., Awai Y., Matsuno H., Kotegawa H., Tou H., Muro Y., Takabatake T.
    The Physical Society of Japan (JPS), 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2303 - 2303, Japanese

  • Aoyama T., Kubo T., Matsuno H., Kotegawa H., Tou H., Mitsuda A., Nagano Y., Araoka N., Wada Y., Yamada Y.
    The Physical Society of Japan (JPS), 2016, Meeting Abstracts of the Physical Society of Japan, 71, 1988 - 1988, Japanese

  • Matsuno H., Matsui T., Kishimoto Y., Kubo T., Kotegawa H., Tou H., Tanaka H. I., Suekuni K., Takabatake T., Sasaki T.
    The Physical Society of Japan (JPS), 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2190 - 2190, Japanese

  • Matsui T., Matsuno H., Kotegawa H., Tou H., Tanaka H. I., Suekuni K., Takabatake T.
    The Physical Society of Japan (JPS), 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2188 - 2188, Japanese

  • Matsushima Kei, Nakahara Shingo, Kotegawa Hisashi, Tou Hideki, Sugawara Hitoshi, Matsuoka Eiichi, Harima Hisatomo

    CrAsはT_N_〜265[K]に磁気転移点を持つヘリカル磁性体で、2014年に圧力下での超伝導転移が観測された。Cr系物質としては初となる非従来型の超伝導であることが示唆されており、CrAsの物性を調べることは、非従来型超伝導の発生機構の解明に繋がる。本研究ではCrAsの単結晶を用いて、圧力下常磁性相での^75^As-NMR測定を行い、Knight Shiftや磁場中の核スピン-格子緩和率を測定した。講演ではCrAsの磁気相関について議論する。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2219 - 2219, Japanese

  • Minami T., Kotegawa H., Tou H., Matsuoka E., Sugawara H.

    近年Cr系化合物においてCrAsが圧力印加により磁気秩序を抑制し、超伝導が発現することが確認された。本研究では、Cr系化合物である反強磁性体Cr2GaNにおいて、Cを置換することにより、磁性を消失させることを試みた。具体的には、電気抵抗測定およびNMR測定を用いて磁気転移温度の置換効果を測定し、報告する予定である。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2218 - 2218, Japanese

  • Matsuno Haruki, Morita Kyohei, Kotegawa Hisashi, Tou Hideki, Haga Yoshinori, Yamamoto Etsuji, Onuki Yoshichika

    UBe13は重い電子系超伝導体である。この系は超伝導転移後も比熱測定などで異常が報告されており、その起源について様々な議論がなされてきた。前回の発表では表面インピーダンス及びNMRの結果から低温で秩序状態を形成している可能性を指摘した。今回はKnight shiftと合わせT1の測定を行いこの結果を報告する。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2166 - 2166, Japanese

  • Aoyama T., Kotegawa H., Tou H., Kimura N., Haga Y., Yamamoto E., Onuki Y.

    スピン三重項多重超伝導体で知られているUPt_3_においてその超伝導起源であると目されている反強磁性秩序(ゆらぎ)に対して高磁場NMRによる^195^Pt核のKnight shiftおよびスピン-格子緩和時間の測定を通じてその観測を試みた。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2164 - 2164, Japanese

  • Uga Toshiaki, Kotegawa Hisashi, Sugawara Hitoshi, Matsuoka Eiichi, Tou Hideki

    希土類金属では、近藤効果とRKKY相互作用がはたらく。両者の拮抗により、量子臨界点が出現し、その近傍では、非従来型の超伝導や重い電子状態などの物性が観測される。そのような物性を示す代表例として、多くの反強磁性を示すCe系化合物が知られているが、Ce系の強磁性体においては報告例が少ない。そこで、加圧下で強磁性秩序と近藤効果を示すCeZnに注目し、今回、新たにCeZnの高圧下電気抵抗測定を行ったので、その結果を報告する。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2102 - 2102, Japanese

  • Kubo Tomoya, Nhan Pham. D. C., Matsuoka Eiichi, Kotegawa Hisashi, Tou Hideki, Harima Hisatomo, Sugawara Hitoshi

    LaV_2_Al_20_は四極子秩序と超伝導が共存するPrV_2_Al_20_の比較物質として興味深い。これまでに1.8 K以上でのdHvA効果測定から一部のフェルミ面が観測されているが、バンド計算から予測されるフェルミ面の全容観測には至っていない。本研究ではより低温でのdHvA効果測定を行うことで、新たなフェルミ面を観測したので報告する。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2067 - 2067, Japanese

  • Kubo Tetsuro, Miyake Ryoma, Matsuno Haruki, Kotegawa Hisashi, Tou Hideki, Harima Hisatomo, Higashinaka Ryuji, Nakama Akihiro, Aoki Yuji, Sato Hideyuki, Ihara Yoshihiko, Goto Takayuki, Sasaki Takahiko

    今回，我々は単結晶PrT_2_Al_20_のNMR測定を行った．得られたNMRスペクトルを解析し，NQRで得られたパラメータとバンド計算の結果を用いてスペクトルを再現することに成功した．この系のナイトシフトは，Tサイトの違いによらず非磁性基底状態を持つ局在4f電子系に期待される振る舞いを示す．T = Nbの試料は低温まで相転移を示唆する振る舞いが見られない一方，T = Taの試料ではナイトシフト，核磁気緩和率に低温で相転移に伴うと考えられる異常が見られた．講演ではスペクトルの解析の詳細とPrT_2_Al_20_の磁気励起について議論したい．

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2108 - 2108, Japanese

  • Kotegawa Hisashi, Tou Hideki, Sugawara Hitoshi

    RuAsは約250Kで金属絶縁体転移を示す物質であり、Rhドープにより超伝導を示す事でも興味が持たれている。今回、我々は単結晶試料の作成に成功し、圧力下電気抵抗測定、As-NQR測定を行ったので報告する。As-NQR測定に関しては通常金属相ではAsサイトが単一であったのに対して絶縁体相では複数サイトへの分裂が生じており、超格子の形成を示唆する結果を得た。また、核スピン－格子緩和率は転移点で発散しており、何らかの自由度の揺らぎの発達も観測された。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2220 - 2220, Japanese

  • Nakase J., Miyake R., Kubo T., Kotegawa H., Tou H., Yamada E., Higashinaka R., Matsuda T.D., Aoki Y.

    磁場に鈍感な重い電子系であるSmTa_2_Al_20_のAl-NQRによる低温での研究を行った。約3K以下でAl-NQR線幅の増大が観測され、Smイオンが磁気的に秩序していることが明らかになった。当日は緩和率もあわせて報告予定である。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2134 - 2134, Japanese

  • Kishimoto Yasuki, Kotegawa Hisashi, Matsuoka Eiichi, Sugawara Hitoshi, Tou Hideki

    CePd2Gaは3Kで反強磁性転移を示すことが知られており、比熱から推測された近藤温度は2-4Kで、反強磁性転移温度と近いことからRKKY相互作用と近藤効果が競合していることを示唆している。また、磁性イオンのCeは局所的に空間反転対称性が破れていることもあり興味がもたれている物質である。今回、我々は微視的な立場から物性を明らかにすることを目的としてNMR、NQR実験を行った。当日はそれらの結果を発表する。

    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 2205 - 2205, Japanese

  • Tetsuro Kubo, Hisashi Kotegawa, Hideki Tou, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato
    2016, TMU INTERNATIONAL SYMPOSIUM ON NEW QUANTUM PHASES EMERGING FROM NOVEL CRYSTAL STRUCTURE, 683, 12015/1 - 6, English
    [Refereed]
    International conference proceedings

  • Tetsuro Kubo, Hisashi Kotegawa, Hideki Tou, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato
    Jul. 2015, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 84(7) (7), 074701/1 - 8, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Kenta Fukumoto, Toshihiro Toyama, Hideki Tou, Hisatomo Harima, Atsushi Harada, Yoshio Kitaoka, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki, Kohei M. Itoh, Eugene E. Haller
    May 2015, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 84(5) (5), 054710/1 - 7, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Shingo Nakahara, Rui Akamatsu, Hideki Tou, Hitoshi Sugawara, Hisatomo Harima
    Mar. 2015, PHYSICAL REVIEW LETTERS, 114(11) (11), 117002/1 - 5, English
    [Refereed]
    Scientific journal

  • Minami T., Kotegawa H., Tou H., Matsuoka E., Sugawara H.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 2180 - 2180, Japanese

  • Matsui T., Matsuno H., Kotegawa H., Tou H., Tanaka H. I., Suekuni K., Takabatake T.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 2184 - 2184, Japanese

  • Matsuno H., Matsui T., Kotegawa H., Tou H., Tanaka H. I., Suekuni K., Takabatake T.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1711 - 1711, Japanese

  • Kishimoto Y., Tou H., Kotegawa H., Awai Y., Muro Y., Takabatake T.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1900 - 1900, Japanese

  • Noma Y., Kubo T., Kotegawa H., Tou H., Haga Y., Yamamoto E., Onuki Y., Itou K., Haller E. E., Nakamura A., Honma Y., Honda F., Aoki D.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1911 - 1911, Japanese

  • Nakahara Shingo, Kotegawa Hisashi, Sugawara Hitoshi, Tou Hideki, Matsuoka Eichi
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1703 - 1703, Japanese

  • Aoyama T., Matsuno H., Kubo T., Kotegawa H., Tou H., Mitsuda A., Nagano Y., Araoka N., Wada Y., Yamada Y.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1437 - 1437, Japanese

  • Tou H., Matsuno H., Kubo T., Kuroda K., Kotegawa H.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1946 - 1946, Japanese

  • Kotegawa H., Nakahara S., Akamatsu R., Tou H., Nishiwaki T., Sugawara H., Harima H.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 2247 - 2247, Japanese

  • Matsuno H., Matsui T., Kotegawa H., Tou H., Tanaka I., Suekuni K., Takabatake T.
    The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 2119 - 2119, Japanese

  • H. Matsuno, K. Morita, H. Kotegawa, H. Tou, Y. Haga, E. Yamamoto, Y. Onuki
    2015, INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014), 592, 012067/1 - 4, English
    [Refereed]
    International conference proceedings
    Link to Kobe Univ. Repository (Kernel)

  • Tetsuro Kubo, Hisashi Kotegawa, Hideki Tou, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato
    2015, INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014), 592, 012093/1 - 5, English
    [Refereed]
    International conference proceedings
    Link to Kobe Univ. Repository (Kernel)

  • Shunsaku Kitagawa, Hisashi Kotegawa, Hideki Tou, Ryota Yamauchi, Eiichi Matsuoka, Hitoshi Sugawara
    Oct. 2014, PHYSICAL REVIEW B, 90(13) (13), 134406/1 - 6, English
    [Refereed]
    Scientific journal

  • Haruki Matsuno, Hisashi Kotegawa, Eiichi Matsuoka, Yo Tomiyama, Hitoshi Sugawara, Hideki Tou
    Oct. 2014, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(10) (10), 10, 103709/1 - 4, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Shingo Nakahara, Hideki Tou, Hitoshi Sugawara
    Sep. 2014, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(9) (9), 093702/1 - 4, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Satoru Oshiro, Yuki Shimizu, Hideki Tou, Yuichi Kasahara, Tsukasa Kishiume, Yasujiro Taguchi, Yoshihiro Iwasa
    Jul. 2014, PHYSICAL REVIEW B, 90(2) (2), 020503(R)/1 - 5, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tetsuro Kubo, Yasuhide Kizaki, Hisashi Kotegawa, Hideki Tou, Yutaro Nagano, Nobutaka Araoka, Akihiro Mitsuda, Hirofumi Wada
    Journal of the Physical Society of Japan, Jun. 2014, Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)
    International conference proceedings

  • Tetsuro Kubo, Hisashi Kotegawa, Hideki Tou, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato
    Journal of the Physical Society of Japan, Jun. 2014, Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)
    International conference proceedings

  • Matsuno H., Amitsuka H., Morita K., Kotegawa H., Tou H., Haga Y., Yamamoto E., Onuki Y., Shimizu Y., Yanagisawa T.
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69, 645 - 645, Japanese

  • Matsuno H., Onuki Y., Morita K., Kotegawa H., Tou H., Shimizu Y., Yanagisawa T., Amitsuka H., Haga Y., Yamamoto E.
    The Physical Society of Japan, 2014, Meeting Abstracts of the Physical Society of Japan, 69, 363 - 363, Japanese

  • Superconductivity of 2.2 K under Pressure in Helimagnet CrAs
    H. Kotegawa, S. Nakahara, H. Tou, H. Sugawara
    2014, J. Phys. Soc. Jpn, 83, 093702/1 - 4, English
    [Refereed]
    Scientific journal

  • Phase diagram of CeRuPO under pressure investigated by 31P-NMR: Comparison between CeRuPO under pressure and the Ce(Ru1−xFex)PO system
    S. Kitagawa, H. Kotegawa, H. Tou, R. Yamauchi, E. Matsuoka, H. Sugawara
    2014, Phys. Rev. B, 90, 134406/1 - 6, English
    [Refereed]
    Scientific journal

  • Ising-Type Ferromagnetic Ground State Driven by Anisotropic c–f Hybridization in CeRu2Al2B
    H. Matsuno, H. Kotegawa, E. Matsuoka, Y. Tomiyama, H. Sugawara, H. Tou
    2014, J. Phys. Soc. Jpn, 83, 103709/1 - 4, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Toshihiro Toyama, Shunsaku Kitagawa, Hideki Tou, Ryota Yamauchi, Eiichi Matsuoka, Hitoshi Sugawara
    Dec. 2013, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 82(12) (12), 1 - 5, English
    [Refereed]
    Scientific journal

  • Hideki Tou, Kanto Sonoda, Kazuya Furumoto, Hisashi Kotegawa, Koichiro Suekuni, Marcos A. Avila, Toshiro Takabatake
    Nov. 2013, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 82(11) (11), 1 - 7, English
    [Refereed]
    Scientific journal

  • Shunsaku Kitagawa, Hisashi Kotegawa, Hideki Tou, Hiroyuki Ishii, Kazutaka Kudo, Minoru Nohara, Hisatomo Harima
    Nov. 2013, Journal of the Physical Society of Japan, 82(11) (11), 1 - 4, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Hiroki Nohara, Hideki Tou, Tatsuma D. Matsuda, Etsuji Yamamoto, Yoshinori Haga, Zachary Fisk, Yoshichika Onuki, Dai Aoki, Jacques Flouquet
    Aug. 2013, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 63(3) (3), 341 - 344, English
    [Refereed]
    Scientific journal

  • Hideki Tou, Kenji Asaki, Hisashi Kotegawa, Takahiro Onimaru, Keisuke T. Matsumoto, Yukihiro F. Inoue, Toshiro Takabatake
    Aug. 2013, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 63(3) (3), 650 - 653, English
    [Refereed]
    Scientific journal

  • Keisuke Kuroda, Kyohei Morita, Hisashi Kotegawa, Hitoshi Sugawara, Hideki Tou
    Jul. 2013, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 62(12) (12), 1862 - 1865, English
    [Refereed]
    Scientific journal

  • Spin dynamics in UBe13: Be-9-NMR studies
    Hideki Tou, Kyohei Morita, Hisashi Kotegawa, Norihiko Tsugawa, Masafumi Sera, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki
    Dec. 2012, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81, SB024(1 - 4), English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Yusuke Tomita, Hideki Tou, Yoshikazu Mizuguchi, Hiroyuki Takeya, Yoshihiko Takano
    Oct. 2012, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81(10) (10), 104712(1 - 4), English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Yusuke Tomita, Hideki Tou, Hiroki Izawa, Yoshikazu Mizuguchi, Osuke Miura, Satoshi Demura, Keita Deguchi, Yoshihiko Takano
    Oct. 2012, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81(10) (10), 103702(1 - 4), English
    [Refereed]
    Scientific journal

  • Y. Tomita, H. Kotegawa, Y. Tao, H. Tou, H. Ogino, S. Horii, K. Kishio, J. Shimoyama
    Oct. 2012, PHYSICAL REVIEW B, 86(13) (13), 124527(1 - 6), English
    [Refereed]
    Scientific journal

  • Haruki Matsuno, Hiroki Nohara, Hisashi Kotegawa, Eiichi Matsuoka, Yo Tomiyama, Hitoshi Sugawara, Hisatomo Harima, Hideki Tou
    Jul. 2012, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81(7) (7), 072705(1 - 4), English
    [Refereed]
    Scientific journal

  • Kenji Asaki, Hisashi Kotegawa, Hideki Tou, Takahiro Onimaru, Keisuke T. Matsumoto, Yukihiro F. Inoue, Toshiro Takabatake
    Feb. 2012, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81(2) (2), English
    [Refereed]
    Scientific journal

  • Kyohei Morita, Keisuke Kuroda, Yudai Hara, Hisashi Kotegawa, Hideki Tou, Etsuji Yamamoto, Yoshinori Haga, Yoshichika Onuki
    2012, INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011), 391, 012048(1 - 4), English
    [Refereed]
    International conference proceedings

  • Hiroki Nohara, Hisashi Kotegawa, Hideki Tou, Tatsuma D. Matsuda, Etsuji Yamamoto, Yoshinori Haga, Zachary Fisk, Yoshichika Onuki, Dai Aoki, Jacques Flouquet
    Sep. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(9) (9), English
    [Refereed]
    Scientific journal

  • Se/Te-NMR study of Fe(Te1-xSex)
    Y. Hara, H. Kotegawa, H. Nohara, H. Tou, Y. Mizuguchi, Y. Takano
    Jul. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80, English
    [Refereed]
    Scientific journal

  • RF Surface Impedance and Se-77-NMR Studies of FeSe: effect of the sample quality
    H. Nohara, H. Kotegawa, Y. Hara, H. Tou, Y. Mizuguchi, Y. Takano
    Jul. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80, English
    [Refereed]
    Scientific journal

  • Hideki Tou, Yoshihiko Inaoka, Masahiro Doi, Masafumi Sera, Kenji Asaki, Hisashi Kotegawa, Hitoshi Sugawara, Hideyuki Sato
    Jul. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(7) (7), English
    [Refereed]
    Scientific journal

  • NMR studies of Ba8Ga16Sn30 clathrates
    H. Tou, K. Sonoda, Y. Nishikawa, H. Kotegawa, H. Suekuni, T. Onimaru, T. Takabatake
    Jul. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80, English
    [Refereed]
    Scientific journal

  • Anomalous behavior of Itinerant Weak Ferromagnet LaFe4As12 in NMR/NQR studies
    K. Asaki, H. Kotegawa, H. Tou, S. Tatsuoka, R. Higashinaka, T. Namiki, H. Sato
    Jul. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80, English
    [Refereed]
    Scientific journal

  • Be-9-NMR Spin-Lattice Relaxation Rate in Heavy-Fermion Superconductor UBe13
    K. Morita, Y. Hara, Z. Sakano, H. Kotegawa, H. Tou, Y. Haga, Y. Onuki
    Jul. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Yudai Hara, Hiroki Nohara, Hideki Tou, Yoshikazu Mizuguchi, Hiroyuki Takeya, Yoshihiko Takano
    Apr. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(4) (4), English
    [Refereed]
    Scientific journal

  • H. Kotegawa, Y. Hara, S. Masaki, H. Tou, Y. Mizuguchi, Y. Takano
    Dec. 2010, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 470, S426 - S427, English
    [Refereed]
    Scientific journal

  • H. Tou, S. Oshiro, H. Kotegawa, Y. Taguchi, Y. Kishiume, Y. Kasahara, Y. Iwasa
    Dec. 2010, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 470, S658 - S659, English
    [Refereed]
    Scientific journal

  • Kentaro Kominato, Msaaki Takeda, Itsuka Minami, Ryoichi Hirose, Osamu Ozaki, Hitoshi Ohta, Hideki Tou, Haruki Ishikawa, Makoto Sakurai, Kiyokazu Fuke
    Jun. 2010, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 20(3) (3), 736 - 739, English
    [Refereed]
    Scientific journal

  • Y. Mizuguchi, Y. Hara, K. Deguchi, S. Tsuda, T. Yamaguchi, K. Takeda, H. Kotegawa, H. Tou, Y. Takano
    May 2010, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 23(5) (5), English
    [Refereed]
    Scientific journal

  • Shinya Sato, Hiraku Ogino, Naoto Kawaguchi, Yukari Katsura, Kohji Kishio, Jun-ichi Shimoyama, Hisashi Kotegawa, Hideki Tou
    Apr. 2010, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 23(4) (4), English
    [Refereed]
    Scientific journal

  • Effect of Swelling on the Superconducting Characteristics in Electron-Doped β-ZrNCl and HfNCl
    K. Hotehama, T. Koiwasaki, K. Umemoto, S. Yamanaka, H. Tou
    Mar. 2010, J. Phys. Soc. Jpn., 79 014707, English
    [Refereed]
    Scientific journal

  • Pressure Dependence of Superconducting Transition Temperature on Perovskite-Type Fe-Based Superconductors and NMR Study of Sr2VFeAsO3
    H. Kotegawa, Y. Tao, H. Tou, H. Ogino, S. Horii, K. Kishio, J. Shimoyama
    2010, J. Phys. Soc. Jpn., Vol.80 014712, English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Takayuki Kawazoe, Hideki Tou, Keizo Murata, Hiraku Ogino, Kohji Kishio, Jun-ichi Shimoyama
    Dec. 2009, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 78(12) (12), English
    [Refereed]
    Scientific journal

  • 77Se-NMR study of Co-substituted FeSe
    H. Kotegawa, Y. Hara, S. Masaki, H. Tou, Y. Mizuguchi, Y. Takano
    Dec. 2009, Physica C, Superconductivity, In Press, C, English
    [Refereed]
    Scientific journal

  • 15N NMR studies of layered nitride superconductor LixZrNCl
    H. Tou, S. Oshiro, H. Kotegawa, Y. Taguchi, Y. Kishiume, Y. Kasahara, Y. Iwasa
    Nov. 2009, Physica C, Superconductivity, In Press, C, English
    [Refereed]
    Scientific journal

  • Akihiro Kondo, Toshihiro Taniguchi, Hiroshi Tanida, Takeshi Matsumura, Masafumi Sera, Fumitoshi Iga, Hideki Tou, Toshiro Sakakibara, Satoru Kunii
    Sep. 2009, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 78(9) (9), English
    [Refereed]
    Scientific journal

  • Hisashi Kotegawa, Takayuki Kawazoe, Hitoshi Sugawara, Keizo Murata, Hideki Tou
    Aug. 2009, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 78(8) (8), English
    [Refereed]
    Scientific journal

  • Satoru Masaki, Hisashi Kotegawa, Yudai Hara, Hideki Tou, Keizo Murata, Yoshikazu Mizuguchi, Yoshihiko Takano
    Jun. 2009, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 78(6) (6), English
    [Refereed]
    Scientific journal

  • H. Kotegawa, S. Masaki, Y. Awai, H. Tou, Y. Mizuguchi, Y. Takano
    We report the results of 77Se-nuclear magnetic resonance (NMR) in α-FeSe, which exhibits a similar crystal structure to the LaFeAsO1−xFx superconductor and shows superconductivity at 8 K. The nuclear-spin lattice relaxation rate 1⁄T1 shows T3 behavior below the superconducting transition temperature Tc without a coherence peak. The T1T=const. behavior, indicative of the Fermi liquid state, can be seen in a wide temperature range above Tc. The superconductivity in α-FeSe is also an unconventional one as well as LaFeAsO1−xFx and related materials. The FeAs layer is not essential for the occurrence of the unconventional superconductivity.
    THE PHYSICAL SOCIETY OF JAPAN, Mar. 2009, J. Phys. Soc. Jpn, 77, 113703/1-4(11) (11), 113703 - 113703, English
    [Refereed]
    Scientific journal

  • H. Kotegawa, H. Sugawara, H. Tou
    We report resistivity measurement under pressure in single crystals of SrFe2As2, which is one of the parent materials of Fe-based superconductors. The structural and antiferromagnetic (AFM) transition of T0=198 K at ambient pressure is suppressed under pressure, and the ordered phase disappears above Pc∼3.6–3.7 GPa. Superconductivity with a sharp transition appears accompanied by the suppression of the AFM state. Tc exhibits a maximum of 34.1 K, which is realized close to the phase boundary at Pc. This Tc is the highest among those of the stoichiometric Fe-based superconductors.
    THE PHYSICAL SOCIETY OF JAPAN, Mar. 2009, J. Phys. Soc. Jpn, 78, 013709/1-4(1) (1), 13709 - 13709, English
    [Refereed]
    Scientific journal

  • Akihiro Kondo, Hideki Tou, Masafumi Sera, Fumitoshi Iga, Toshiro Sakakibara
    Jan. 2008, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77, 285 - 287, English
    [Refereed]
    Scientific journal

  • S. Nagai, S. Ikeda, H. Iwakubo, H. Tou, M. Sera, F. Iga
    We have studied the electrical resistivity of Ce0.8Pr0.2B6 for H //<110> both at the ambient pressure and under pressure of P=1.36GPa. At the ambient pressure, Pr-doping acts to enhance TQ different from the large suppression of TQ in Ce0.7Pr0.3B6. This difference is ascribed to the different magnitude of the magnetic interaction between these two compounds. TN shows the unusual increase with increasing magnetic field, which is explained by considering the effect of the magnetic field induced Txy z-AFO order. By applying the pressure, the low temperature region of the magnetic phase diagram is largely modified. This originates from the existence of the effective ferromagnetic moment induced by the Oxy-AFQ and Txy z-AFO order by the magnetic field.
    The Physical Society of Japan, 2008, Journal of the Physical Society of Japan, 77(suppl.A) (suppl.A), 288-290, English
    [Refereed]
    International conference proceedings

  • Y. Kawasaki, T. Tanaka, M. Izumia, Y. Kishimoto, T. Ohno, H. Tou, Y. Inaoka, M. Sera, K. Shigetoh, T. Takabatake
    Nov. 2007, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 68(11) (11), 2195 - 2198, English
    [Refereed]
    Scientific journal

  • A. Kondo, H. Tou, M. Sera, F. Iga, T. Sakakibara
    We have studied the effect of Nd doping on phase IV of Ce0.7NdyLa0.3-yB6 (y = 0.005, 0.01, 0.03, and 0.05) to obtain information on the order parameter in phase IV. Phase IV is rapidly suppressed and phase III is stabilized by the Nd doping. Phase IV disappears at the critical concentration y(c) similar to 0.015 above which only phase III exists below 1.4 K. The macroscopic properties in phase IV are not affected by the Nd doping. For y = 0.01, there exists a region where phases III and IV coexist at a low magnetic field. This mixed state is unstable and is easily changed to phase III by applying the magnetic field. This indicates that phases III and IV are competitive and phase IV is not the magnetic dipole ordered phase. The long-range ordering temperatures from phase IV or III to the paramagnetic region are constant at least up to y = 0.05. This suggests the existence of some relationship between phases III and IV.
    THE PHYSICAL SOCIETY OF JAPAN, Oct. 2007, Journal of the Physical Society of Japan, 76(10) (10), 103708(1-4) - 103708, English
    [Refereed]
    Scientific journal

  • Matsumura, Masahiro, Hyoudou, Genki, Itoh, Machiko, Kato, Harukazu, Nishioka, Takashi, Matsuoka, Eiichi, Tou, Hideki, Takabatake, Toshirou, Sera, Masafumi
    Sb nuclear quadrupole resonances (NQR) have been performed on the alkaline-earth filled skutterudite AFe(4)Sb(12) (A = Ca, Sr, and Ba) being close to ferromagnetic instabiity. No hyperfine splitting in NQR spectrum even at the lowest temperature (1.5 K) confirms an absence of uniform ferromagnetic order in these compounds. Above about T* similar to 70K, the nuclear spin-lattice relaxation rate divided by temperature, I IT, T, follows an empirical relationship I IT, T = a + b chi(spin) with respect to the Curie Weiss (CW) like T-dependence of the static spin susceptibility chi(spin). The correlation between I IT, T and chi(spin) is consistent with the self-consistent renormalization (SCR) theory for the three-dimensional (3D) nearly ferromagnet despite the relatively large contribution of the first term not correlating to chi(spin). However, below about T*, I IT, T exhibits a gap-like suppression with a gap magnitude of about 65 K. This unusual suppression of the low energy spin excitations is contrasting to the case in LaFe4Sb12, and a characteristic feature in the filled skutterudites with divalent filler ion. The pseudo-gap structure near the Fermi level is proposed for the hybri
    PHYSICAL SOC JAPAN, Aug. 2007, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76(8) (8), 84716 - 084716-8, English
    [Refereed]
    Scientific journal

  • Hideki Tou, Norihiko Tsugawa, Masafumi Sera, Hisatomo Harima, Yoshinori Haga, Yoshichika Onuki
    May 2007, Journal of the Physical Society of Japan, 76(5) (5), English
    [Refereed]
    Scientific journal

  • Tou Hideki, Tsugawa Norihiko, Sera Masafumi, Harima Hisatomo, Haga Yoshinori, Onuki Yoshichika
    May 2007, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76(5) (5)
    [Refereed]

  • H. Tou, N. Tsugawa, M. Sera, Y. Haga, Y. Onuki
    Mar. 2007, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310(2) (2), 706 - 708, English
    [Refereed]
    Scientific journal

  • Y. Inaoka, H. Tou, M. Sera, H. Sugawara, H. Sato
    Mar. 2007, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310(2) (2), 596 - 598, English
    [Refereed]
    Scientific journal

  • Kawasaki Yu, Izumi Makoto, Kishimoto Yutaka, Ohno Takashi, Tou Hideki, Inaoka Yoshihiko, Sera Masafumi, Shigetoh Keisuke, Takabatake Toshiro
    Sb NMR and NQR studies have revealed the formation of a pseudogap at the Fermi level in the density of states in a valence fluctuating compound CeIrSb. The nuclear spin-lattice relaxation rate divided by temperature, 1/ T1 T, has a maximum around 300 K and decreases significantly as 1/ T1 T∼ T2, followed by a 1/ T1 T=const relation at low temperature. This temperature dependence of 1/ T1 T is well reproduced by assuming a V-shaped energy gap with a residual density of states at the Fermi level. The size of energy gap for CeIrSb is estimated to be about 350 K, which is by 1 order of magnitude larger than those for the isostructural Kondo semiconductors CeRhSb and CeNiSn. Despite the large difference in the size of energy gap, CeIrSb, CeRhSb, and CeNiSn are indicated to be classified into the same group revealing a V-shaped gap due to c-f hybridization. The temperature dependence of the Knight shift measured in a high magnetic field agrees with the formation of this pseudogap.
    American Physical Society, Mar. 2007, Phys. Rev. B, 75(9) (9), 094410 (1-5) - 1-094410-5, English
    [Refereed]
    Scientific journal

  • M. Sera, M. Kawaguchi, S. Kishimoto, A. Kondo, H. Iwakubo, H. Tou, K. Umeo, F. Iga
    We have studied the Ce-cite substitution effect by R(= Pr, Nd) ion on the multipole interactions in CeB6. We found that T-Q of Ce0.9Nd0.1B6 in magnetic fields is higher than that of Ce0.9Pr0.1B6 and the magnetization is larger in the former than in the latter. The larger suppression of T-Q in CexPr(1-x)B(6) suggests the larger reduction of the T-xyz antiferro-octupolar (AFO) interaction in this system considering that T-Q at H = 0 is nearly the same in both systems. The smaller magnetization in CexPr1-xB6 than in CexNd1-xB6 originates from the larger suppression of T-xyz AFO interaction and also the larger Ce-Pr AF exchange interaction than in CexNd1-xB6.
    Mar. 2007, Journal of Magnetism and Magnetic Materials, 310(2) (2), e158-e159, English
    [Refereed]
    International conference proceedings

  • A. Kondo, H. Tou, M. Sera, F. Iga, T. Morie, T. Sakakibara
    We have investigated the Pr-doping effect on phase IV of CexLa1-xB6. For Ce0.7Pr0.03La0.27B6, the region of phase III is expanded and the phase IV disappears regardless of only 3% Pr doping. By Pr 8% doping, the phase II which exists above H similar to 0.8 T in Ce0.7Pr0.03La0.27B6 seems to separate the phase III and I at low fields. In Ce0.7Pr0.1La0.2B6, we observed the new phase defined as phase IV ' whose characteristics are very similar to that of phase IV. This phase IV ' exists inside phase II. These indicate that this system is formed under the subttle balance of several kinds of multipole interactions.
    Mar. 2007, Journal of Magnetism and Magnetic Materials, 310(2) (2), e160-e162, English
    [Refereed]
    International conference proceedings

  • S. Ikeda, K. Umeo, H. Tou, M. Sera, F. Iga, S. Kunii
    We performed the mean field calculation of the magnetization under pressure for the four sublattice model to understand the unusual pressure effect of CeB6. The calculated results are in good agreement with the experimental results and the canted ferromagnetic ground state is predicted to appear at higher pressure. We studied the electrical resistivity of Ce0.75La0.25B6 under pressure. We found that the phase III is rapidly suppressed by pressure and TIV-I increases with pressure. At P = 0.6 GPa, the direct phase transition from IV to II is found, which will be the clue to understanding the phase IV.
    Mar. 2007, Journal of Magnetism and Magnetic Materials, 310(2) (2), e163-e165, English
    [Refereed]
    International conference proceedings

  • Tou Hideki, Tsugawa Norihiko, Sera Masafumi, Harima Hisatomo, Haga Yoshinori, Onuki Yoshichika
    Feb. 2007, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76(2) (2), 24705 - 024705-9, English
    [Refereed]

  • A. Kondo, H. Tou, M. Sera, F. Iga
    We have studied the effect of the Q(xy)-antiferro-quadrupole (AFQ), T-xyz-antiferro-octupole (AFO), and AF exchange interactions on the Gamma(5u)-AFO order, which is a strong candidate of the order in phase IV of CexLa1-xB6, by mean field calculation for the two-sublattice model. The magnetic phase diagram obtained by the calculation seems to reproduce those of CexLa1-xB6, which seems to provide some clues to understanding phase IV. However, a peak of the magnetic susceptibility disappears easily after introducing the Q(xy)-AFQ interaction, which is because the Q(xy)-FQ order that accompanies the Gamma(5u)-AFO order is easily suppressed by the O-xy-AFQ interaction. The present work indicates that in order to understand the physics of CexLa1-xB6, further studies are necessary both experimentally and theoretically.
    The Physical Society of Japan (JPS), Jan. 2007, Journal of the Physical Society of Japan, 76(1) (1), 013701(1-4) - 013701-4, English
    [Refereed]
    Scientific journal

  • M. Sera, S. Goto, T. Koshikawa, M.-S. Kim, H. Tou, F. Iga
    We measured the thermal expansion and magnetostriction of PrB6 under the longitudinal magnetic fields up to 15 T for three magnetic field directions. We found the following results in the IC1 and IC2 phases for H parallel to (111). The magnetostriction shows only a small magnetic field dependence in the IC1 phase but exhibits a large shrinkage with increasing magnetic field roughly proportional to -H-2 in the IC2 phase. The thermal expansion exhibits a small change in the IC1 phase but a large increase in the IC2 phase with decreasing temperature. These different behaviors between the IC1 and IC2 phases originate from the existence of both chi(parallel to) and chi perpendicular to components exist in the IC1 phase and only the chi perpendicular to component in the IC2 phase. The characteristic magnetic and magnetoelastic properties of the experimental results are reproduced by the simple calculation for the two sublattice model, although this model does not represent the incommensurate magnetic strucutres of PrB6. The important point is the weight of chi(parallel to) and chi perpendicular to components which determines the macroscopic properties such as the magnetization, magnetost
    The Physical Society of Japan (JPS), Dec. 2006, Journal of the Physical Society of Japan, 75(1) (1), 014706(1-7) - 14706, English
    [Refereed]
    Scientific journal

  • Munemichi Kawaguchi, Hideki Tou, Masafumi Sera, Kenichi Kojima, Tsuyoshi Ikeno, Yosikazu Isikawa
    Sep. 2006, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75(9) (9), English
    [Refereed]
    Scientific journal

  • A. Kondo, H. Tou, M. Sera, F. Iga
    We have investigated the Nd-doping effect on phase IV of CexLa1-xB6. The shape of the specific heat of Ce0.7Nd0.03La0.27B6 is changed drastically from that of Ce0.7La0.3B6. The magnetic phase diagram is changed largely only by a small amount of Nd ion doping except the phase boundaries II-I and III-II. Phase IV disappears only by Nd doping of 0.03 and the ground state is changed to the antiferromagnetic one. These results indicate that Nd ions are compatible with the order parameters in phases II and III but not with that in phase IV.
    Aug. 2006, Nd-doping effect on phase IV of CexLa1-xB6, 383(1) (1), 35-36, English
    [Refereed]
    International conference proceedings

  • kawaguchi munemichiM.Kawaguchi, M.-S.Kim, H.Tou, M.Sera, F.Iga
    Aug. 2006, Physica B, 383(1) (1), 33 - 34, English
    [Refereed]
    Scientific journal

  • M.-S. Kim, Y. Nakai, H. Tou, M. Sera, F. Iga, T. Takabatake, S. Kunii
    The thermopower, S, of CexR1- xB6 (R = La, Pr, Nd) was investigated. S with a positive sign shows a typical behavior observed in the Ce Kondo system, an increase with decreasing temperature at high temperatures and a maximum at low temperatures. The S values of all the systems at high temperatures are roughly linearly dependent on the Ce concentration, indicating the conservation of the single-impurity character of the Kondo effect in a wide x range. However, the maximum value of S, Smax, and the temperature, Tmax, at which Smax is observed exhibit different x dependences between CexLa1 -xB6 and CexR1- xB6 (R = Pr, Nd). In CexLa1- xB6, Tmax, which is 8K in CeB6, decreases with decreasing x and converges to ~ 1K in a very dilute alloy and Smax shows an increase below x ~ 0.1 after decreasing with decreasing x. In CexR1 -xB6 (R = Pr, Nd), Tmax shows a weak x dependence but Smax shows a roughly linear decrease in x. These results are discussed from the standpoint of the chemical pressure effect and the Ce–Ce interaction. S in the long-range ordered phase shows very different behaviors between CexPr1- xB6 and CexNd1- xB6.
    The Physical Society of Japan (JPS), May 2006, Journal of the Physical Society of Japan, 75(6) (6), 064704(1-4) - 064704-7, English
    [Refereed]
    Scientific journal

  • Surface Impedance Studies of Heavy Fermion Superconductors, PrOs4Sb12 and UB13
    Hideki Tou, Norihiko Tsugawa, Masahiro Doi, Yuki Nakai, Masafumi Sera
    Jan. 2006, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75, 201 - 203, English
    [Refereed]
    Scientific journal

  • Tsugawa Norihiko, Tou Hideki, Sera Masafumi, Harima Hisatomo, Haga Yoshinori, Onuki Yoshichika
    Jan. 2006, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75, 107 - 109, English
    [Refereed]

  • H Tou, M Doi, M Sera, M Yogi, H Sugawara, R Shiina, H Sato
    Oct. 2005, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74(10) (10), 2695 - 2698, English
    [Refereed]
    Scientific journal

  • M. Sera, S. Goto, T. Koshikawa, M.-S. Kim, H. Tou, F. Iga, Y. Mitsukawa, K. Kojima
    We have studied the magnetization, electrical resistivity and magnetic phase diagram of PrxLa1- xB6. The x dependence of the incommensurate (IC) magnetic ordering temperature, T_IC1, is similar to that of NdxLa1- xB6. The noncollinear commensurate magnetic ordering is rapidly suppressed by La doping. These suggest that the IC magnetic ordering originates from the long-range RKKY-type exchange interaction and that the short-range Oxy-type AFQ interaction, which is easily affected by the local disturbance, is associated with the formation of the commensurate magnetic ordering in the C phase. The magnetic phase diagram of Pr0.8La0.2B6 is very different from those of PrB6 and Pr0.9La0.1B6. Although there exists the C and IC1 phases at H = 0 in the latter two compounds, there exists only the IC1 phase at H = 0 in Pr0.8La0.2B6. However, the C phase appears above 6 T only for H // <111>. The unusual magnetic phase diagram for H // <111> is explained as a result of the competition between the exchange,
    quadrupolar and Zeeman interactions by taking into account the domain distribution, that depends on the applied magnetic field direction.
    The Physical Society of Japan (JPS), Oct. 2005, Journal of the Physical Society of Japan, 74(10) (10), 2691-2694 - 2694, English
    [Refereed]
    Scientific journal

  • S. Kishimoto, A. Kondo, M.- S. Kim, H. Tou, M. Sera, F. Iga
    We have investigated the physical properties of Ce0.7Pr0.3B6 in order to clarify the doping effect on the multipolar interactions in CeB6 and PrB6. As a result of the suppression of the antiferro-quadrupolar ordering temperature T-Q and the enhancement of T-N by Pr doping, six long-range ordered (LRO) phases appear. T-Q exhibits a smooth increase with increasing magnetic field as in CeB6. At a high magnetic field, above similar to 10 T, only phase II exists. As for the three LRO phases below similar to 10 T and below T-Q, there exists a possibility of incommensurate quadrupolar and magnetic ordering. A new question of how the quadrupolar ordering is compatible with the magnetic ordering appears in the present study. The coexistence of the magnetic and quadrupolar orderings in Ce0.7Pr0.3B6 indicates that the strong Ce-Pr interaction is different from the weak Ce-Nd interaction in CexNd1-xB6.
    The Physical Society of Japan (JPS), Aug. 2005, Journal of the Physical Society of Japan, 74(11) (11), 2913-2916 - 2916, English
    [Refereed]
    Scientific journal

  • Matsumura, M, Hyoudou, G, Kato, H, Nishioka, T, Matsuoka, E, Tou, H, Takabatake, T, Sera, M
    We report a Sb-121.123 nuclear quadrupole resonance (NQR) Study of SrFe4Sb12 and BaFe4Sb12. The absence of hyperfine splitting or marked broadening in NQR spectra even at the lowest temperature (1.5 K) suggests the absence of uniform ferromagnetic ordering in both compounds. The nuclear spin-lattice relaxation rate divided by temperature, 1/T1T, does not follow the Korringa law, but shows a broad maximum at around 60 K. At temperatures higher than 80 K, 1/T1T can be decomposed into two terms, (1/T1T)(o) = const. and T-dependent (1/T1T)(spin). The component (1/T1T)(spin) is proportional to chi(spin), which suggests that the present system is close to ferromagnetic instability, whereas below 60 K, (1/T1T)spin decreases to zero, being unexpected in typical nearly or weakly ferromagnetism.
    PHYSICAL SOC JAPAN, Aug. 2005, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74(8) (8), 2205 - 2208, English
    [Refereed]
    Scientific journal

  • H. Tou, Y. J. Tanaka, M. Sera, Y. Taguchi, T. Sasaki, Y. Iwasa, L. Zhu, S. Yamanaka
    We report magnetoresistance measurements of layered superconductor ZrNCl0.7 at high magnetic fields (H) as high as 27 T and temperatures (T) as low as 0.5 K. The T dependence of the upper critical field Hc2(T) for Hc and Hc was obtained. Hc2(T) starts to increase with a gentle slope near Tc(0) followed by a steep slope with decreasing T, implying the dimensional crossover of the interplane coherence length from three dimensional to two dimensional (2D). The Hc2(T) is found to be anisotropic for the field direction, where the slope of H=(dHc2/dT) near H1 T can be estimated as H–22.1 kOe/K and H–4.9 kOe/K for Hc and Hc, respectively. The obtained anisotropy parameter 4.5 gives evidence for the 2D characteristic of the superconducting state in ZrNCl0.7.
    The American Physical Society, Jul. 2005, Phys. Rev. B, 72(2) (2), 020501-1 - 020501-4, English
    [Refereed]
    Scientific journal

  • Tou Hideki, Ishida Kenji, Kitaoka Yoshio
    Quasiparticle spin susceptibility ($\chi^{\text{qp } }$) for various heavy-fermion (HF) superconductors is discussed on the basis of the experimental results of NMR Knight shift ($K$), NMR relaxation rate ($1/T_{1}$), and electronic specific heat ($\gamma_{\text{el } }$) within the framework of the Fermi liquid model for a Kramers doublet crystal electric field (CEF) ground state. $\chi_{\gamma}$is calculated from the enhanced Sommerfeld coefficient $\gamma_{\text{el } }$, and $\chi_{T_1}$from the quasiparticle Korringa relation $T_1T(K_{T_1})^2=\mathrm{const.}$via the relation of $\chi_{T_1}=(N_{\text{A } }\mu_{\text{B } }/A_{\text{hf } })K_{T_1}$where $A_{\text{hf } }$is the hyperfine coupling constant, $N_{\text{A } }$the Abogadoro's number and $\mu_{\text{B } }$the Bohr magneton. For the even-parity (spin-singlet) superconductors CeCu2Si2, CeCoIn5 and UPd2Al3, the fractional decrease in the Knight shift, $\delta K^{\text{obs } }=K^{\text{obs } }(T_{\text{c } })-K^{\text{obs } }(T\rightarrow 0)$, below the superconducting transition temperature ($T_{\text{c } }$) is due to the decrease of the spin susceptibility of heavy quasiparticle estimated consistently from $\chi_{\gamma}$and~$\chi_{T_1}$. This result allows us to conclude that the heavy quasiparticles form the spin-singlet Cooper pairs in CeCu2Si2, CeCoIn5 and UPd2Al3. On the other hand, no reduction in the Knight shift is observed in UPt3 and UNi2Al3, nevertheless the estimated values of $\chi_{\gamma}$and $\chi_{T_1}$are large enough to be probed experimentally. The odd-parity superconductivity is therefore concluded in these compounds. The NMR Knight shift results provide a convincing way to classify the HF superconductors into either even- or odd-parity pairing.
    The Physical Society of Japan (JPS), Apr. 2005, J Phys Soc Jpn, 74(4) (4), 1245 - 1254, English

  • H Tou, M Doi, M Sera, M Yogi, Y Kitaoka, H Kotegawa, GQ Zheng, H Harima, H Sugawara, H Sato
    Apr. 2005, PHYSICA B-CONDENSED MATTER, 359, 892 - 894, English
    Scientific journal

  • Effects of magnetic field and pressure on the weak ferromagnetism of YbRhSb
    y.muro y.haizaki, 梅尾, 和則, 藤 秀樹
    Apr. 2005, Physica B, 359-361, 124 - 126
    [Refereed]
    Scientific journal

  • H Tou, K Ishida, Y Kitaoka
    Aug. 2004, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 408, 305 - 308, English
    [Refereed]
    Scientific journal

  • Antiferromagnetic spin fluctuation in CeRhSn probed by 119Sn NMR
    藤 秀樹, m-s.kim
    Apr. 2004, Phys. Rev., B70, 199407(R)
    [Refereed]
    Scientific journal

  • Yoshino Yasuhiro, Kobayashi Shinichiro, Tsuji Shigenari, Tou Hideki, Sera Masafumi, Iga Fumitoshi, Zenitani Yuji, Akimitsu Jun
    The Nd ion doping effects on the multipolar interactions in CeB6 were studied. At high magnetic fields, the antiferro-quadrupolar (AFQ) phase II is not significantly affected by Nd doping. This may be because the Nd ion is in the paramagnetic state. However, with decreasing magnetic field, the Nd doping effect becomes apparent. This may be because Nd–Nd interaction dominates the long-range ordering at low magnetic fields. At low magnetic fields, just after $T_{\text{Q } }$ and $T_{\text{N } }$ coincide with each other when Nd ion is doped, new phases, namely, phases IIIA and V appear. Phase IIIA is the AF magnetic state where all types of quadrupolar interaction are small. The nature of phase V seems to change largely at $x \sim 0.5$. For $x < 0.4$, phase V may be the same as the type I AF magnetic state observed in NdB6 where the $O_2^0$-type FQ interaction is prominent. In phase V for $x>0.5$, the AF magnetic state where both Ce and Nd ions contribute may be realized.
    The Physical Society of Japan (JPS), Jan. 2004, J Phys Soc Jpn, 73(1) (1), 29 - 32, English

  • Kobayashi Shinichiro, Yoshino Yasuhiro, Tsuji Shigenari, Tou Hideki, Sera Masafumi, Iga Fumitoshi
    We have studied the transport, magnetic and elastic properties of Ce0.8La0.2B6 single crystal. The phase IV which existed for $x\leq 0.75$ in CexLa1-xB6 was found to exist in this sample but its existence region is very small. The magnetic phase diagram indicates that the phase IV appears in order to avoid a direct contact between the antiferromagnetic phase III dominated by the $O_{xy}$-type antiferro-quadrupolar ordering and the paramagnetic phase I. The anisotropy of the magnetization was discovered in the phase IV above $H\sim0.3$ T. There, the magnetization is large for $H\parallel \langle 001\rangle$ but small for $H\parallel \langle 110\rangle$. From the results of the anisotropic behaviors of the magnetization in the phase IV, we proposed that there exist the three domain states, $K_{xy}$, $K_{yz}$ and $K_{zx}$ at $H=0$ and in the $K_{xy}$ domain, $M$ under $H\parallel z$ is large and that under $H\parallel x$ or $y$ is small. Based on the anisotropy of $M$ and the smooth $x$ dependence of $T_{\text{N } }$ and $T_{\text{N } }^{\text{IV--I } }$ through $x\sim0.8$, we discussed the possibility of the magnetic ordering in the phase IV. $T_{\beta}$-type antiferro-octupolar ordering whose possibility was discussed in detail by Kuramoto and Kusunose [J. Phys. Soc. Jpn. 69 (2000) 671] is also discussed.
    The Physical Society of Japan (JPS), Nov. 2003, J Phys Soc Jpn, 72(11) (11), 2947 - 2954, English

  • K Ishida, H Tou, N Tateiwa, Y Kitaoka, KN Sato, N Aso, C Geibel, F Steglich
    May 2003, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 388, 535 - 536, English
    [Refereed]
    Scientific journal

  • M Matsumura, T Sasakawa, T Takabatake, S Tsuji, H Tou, M Sera
    May 2003, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72(5) (5), 1030 - 1033, English
    [Refereed]
    Scientific journal

  • H Tou, Y Maniwa, S Yamanaka
    Mar. 2003, PHYSICAL REVIEW B, 67(10) (10), English
    [Refereed]
    Scientific journal

  • Yutaka Maniwa, Hiromichi Kataura, Masatoshi Abe, Akihiko Fujiwara, Ryuji Fujiwara, Hiroshi Kira, Hideki Tou, Shinzo Suzuki, Yohji Achiba, Eiji Nishibori, Masaki Takata, Makoto Sakata, Hiroyoshi Suematsu
    Jan. 2003, Journal of the Physical Society of Japan, 72(1) (1), 45 - 48
    Scientific journal

  • Thermal expansion of single-walled carbon nanotube (SWNT) bundles: X-ray diffraction studies
    Yutaka Maniwa, Ryuji Fujiwara, Hiroshi Kira, Hideki Tou, Hiromichi Kataura, Shinzo Suzuki, Yohji Achiba, Eiji Nishibori, Masaki Takata, Makoto Sakata, Akihiko Fujiwara, Hiroyoshi Suematsu
    Dec. 2001, Physical Review B - Condensed Matter and Materials Physics, 64(24) (24), 2414021 - 2414023
    Scientific journal

  • K. Kitazume, H. Tou, Y. Maniwa, M. Kosaka, K. Tanigaki
    American Institute of Physics Inc., Oct. 2001, AIP Conference Proceedings, 590, 377 - 380, English
    [Refereed]
    International conference proceedings

  • Yutaka Maniwa, Ryuji Fujiwara, Hiroshi Kira, Hideki Tou, Eiji Nishibori, Masaki Takata, Makoto Sakata, Akihiko Fujiwara, Xinluo Zhao, Sumio Iijima, Sumio Iijima, Yoshinori Ando
    Aug. 2001, Physical Review B - Condensed Matter and Materials Physics, 64(7) (7), 731051 - 731054
    Scientific journal

  • Unconventional superconductivity in electron-doped layered Li-0.48(THF)(y)HfNCl
    H Tou, Y Maniwa, T Koiwasaki, S Yamanaka
    Jun. 2001, PHYSICAL REVIEW LETTERS, 86(25) (25), 5775 - 5778, English
    [Refereed]
    Scientific journal

  • Electronic states, of superconducting fullerides with small lattice constants: a NMR study
    K Kitazume, H Tou, Y Maniwa, M Kosaka, K Tanigaki
    Mar. 2001, SYNTHETIC METALS, 121(1-3) (1-3), 1115 - 1116, English
    [Refereed]
    Scientific journal

  • Hideki Tou, Yohji Achiba, Masaki Takata, Hiroyoshi Suematsu, Hiromichi Kataura, Ryuji Fujiwara, Hiroshi Kira, Yutaka Maniwa, Shinzo Suzuki, Makoto Sakata, Eiji Nishibori, Akihiko Fujiwara
    2001, Physical Review B - Condensed Matter and Materials Physics, 64(24) (24)
    Scientific journal

  • Evidence for quasi-two-dimensional superconductivity in electron-doped Li-0.48(THF)(y)HfNCl
    H Tou, Y Maniwa, T Koiwasaki, S Yamanaka
    Jan. 2001, PHYSICAL REVIEW B, 63(2) (2), English
    [Refereed]
    Scientific journal

  • NMR evidence for Mott-Hubbard localization in (NH3)K3C60
    H Tou, Y Maniwa, Y Iwasa, H Shimoda, T Mitani
    Jul. 2000, PHYSICAL REVIEW B, 62(2) (2), R775 - R778, English
    [Refereed]
    Scientific journal

  • Mott transition with antiferromagnetic ordering in ammoniated alkali C-60 superconductors: NMR studies
    H Tou, N Muroga, Y Maniwa, H Shimoda, Y Iwasa, T Mitani
    Jun. 2000, PHYSICA B-CONDENSED MATTER, 281, 1018 - 1020, English
    [Refereed]
    Scientific journal

  • Y. Kitaoka, H. Tou, K. Ishida, N. Kimura, Y. Onuki, E. Yamamoto, Y. Haga, K. Maezawa
    Jun. 2000, Physica B, 281, 878 - 881, English
    [Refereed]
    International conference proceedings

  • H. Tou, Y. Maniwa, Y. Iwasa, H. Shimoda, T. Mitani
    2000, Physical Review B - Condensed Matter and Materials Physics, 62(2) (2), R775 - R778, English
    [Refereed]
    Scientific journal

  • NMR studies of silicon clathrate compounds
    Y Maniwa, H Sakamoto, H Tou, Y Aoki, H Sato, F Shimizu, H Kawaji, S Yamanaka
    2000, MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 341, 1301 - 1306, English
    [Refereed]
    Scientific journal

  • K. Ishida, Y. Tokunaga, Y. Kitaoka, G. Q. Zheng, K. Magishi, H. Mukuda, H. Tou, T. Mito, K. Asayama
    1999, Physica B: Condensed Matter, 259-261, 511 - 516, English
    [Refereed]
    Scientific journal

  • Mott transition and antiferromagnetic ordering in intercalated-C-60 superconductor
    H Tou, Y Maniwa, H Shimoda, Y Iwasa, T Mitani
    Jan. 1999, PHYSICA B-CONDENSED MATTER, 259-61, 868 - 869, English
    [Refereed]
    Scientific journal

  • Sato N., Tou Hideki, Maniwa Y., Kikuchi K., Suzuki S., Achiba Y., Kosaka M., Tanigaki K.
    A 13C-NMR anisotropic hyperfine coupling tensor was determined as 2π(-1.68, -1.68, 3.37)×106 rad/sec for C603- in A3C60 superconductors, where A is an alkali metal, by analyzing 13C-NMR spectra below 85 K. Combined with an isotropic coupling constant of (2π×0.69)×106 rad/sec, the 2s and 2p characters of the electronic wave functions at the Fermi level were deduced. The results were compatible with local-density-approximation band calculations. From a simulation of 13C-NMR spectra at superconducting state, the traceless chemical (orbital) shift tensor and isotropic chemical shift were determined as (67, 34, -101) ppm and ∼150 ppm, respectively. An estimated magnetic penetration depth is larger than 570 nm in K3C60. Furthermore, the modified Korringa relation, T1TK2∼βS (with Knight shift K, spin-lattice relaxation time T1, and Korringa constant S), clearly showed the existence of weak but substantial antiferromagnetic spin fluctuation in A3C60; β=0.40–0.58 with an error of ±20%.0 The Stoner enhancement factor was also determined as 1–1.5 from a comparison between spin susceptibility obtained from NMR and band-calculation results.
    American Physical Society, Nov. 1998, Physical review. B, 58(18) (18), 12433 - 12440, English

  • Maniwa Y., Muroga N., Sato N., Tou Hideki, Shimoda H., Iwasa Y., Mitani H., Kikuchi K., Suzuki S., Achiba Y., Kosaka M., Tanigaki K., Chen X., Labes M. M.
    The static spin susceptibility, χsSQ and χsNMR, in C60 superconductors K3C60 and Rb3C60 was studied using a dc superconducting quantum interference device magnetometer and 13C NMR. We found that χsSQ has a peculiar temperature (T) dependence behaving as (1-CT2) with a positive constant C∼(1×10-6) deg-2, contrary to the almost T independent χsNMR. These observations indicate a possibility that there exist Kondo-like impurities, whose Kondo temperature is ∼500 K and whose content is ∼0.001 spins per carbon. On the basis of these studies, the lattice constant dependence of the intrinsic spin susceptibility was established to be dχs/da0=(5.7±0.4)×10-4 emu/mol C60/Å in A3C60 superconductors where A is an alkali metal.
    American Physical Society, Nov. 1998, Physical review. B, Condensed matter, 58(17) (17), 11603 - 11606, English

  • H. Tou, Y. Kitaoka, K. Ishida, K. Asayama, N. Kimura, Y. Onuki, E. Yamamoto, Y. Haga, K. Maezawa
    195Pt Knight shift (KS) measurements covering the superconducting multiple phases for major field ( H) orientations have been carried out on the high-quality single crystal UPt3. For H>5 kOe, the KS does not change below the superconducting transition temperature Tc down to 28 mK, regardless of major crystal orientations, which provides evidence that the odd-parity superconductivity with the parallel spin pairing is realized. By contrast, the KS decreases below Tc for Hb∥b axis and Hb<5 kOe and for Hc∥c axis and Hc<2.3 kOe, whereas the KS for Ha∥a axis is T independent across Tc down to Ha∼1.764 kOe. These novel findings entitle UPt3 as the first spin-triplet odd-parity superconductor including a nonunitary pairing characterized by the two-component d vector like db+idc at low T and low H.
    American Physical Society, Apr. 1998, Physical Review Letters, 80(14) (14), 3129 - 3132, English
    [Refereed]
    Scientific journal

  • NMR/NQR studies of U-123 type heavy fermion compounds
    H Tou, Y Kitaoka, T Kamatsuka, K Asayama, C Geibel, F Steglich, S Sullow, JA Mydosh
    Feb. 1997, PHYSICA B, 230, 360 - 363, English
    [Refereed]
    Scientific journal

  • Odd Parity Superconducting State of UPt3
    H. Tou, Y. Kitaoka, K. Asayama, T. Sakakibara, K. tenya, M. Ikeda, H. Amitsuka, N. Kimura, R. Settai, Y. Onuki, E. Yamamoto, Y. Haga, K. Maezawa, K. Machida
    Sep. 1996, 固体物理, 31, 763 - 774, Japanese
    [Refereed]
    Scientific journal

  • Odd-parity superconductivity with parallel spin pairing in UPt3: Evidence from Pt-195 Knight shift study
    H Tou, Y Kitaoka, K Asayama, N Kimura, Y Onuki, E Yamamoto, K Maezawa
    Aug. 1996, PHYSICAL REVIEW LETTERS, 77(7) (7), 1374 - 1377, English
    [Refereed]
    Scientific journal

  • Pt-195 Knight shift study of single crystal UPt3 - Evidence for odd-parity pairing
    H Tou, Y Kitaoka, K Asayama, N Kimura, Y Onuki, E Yamamoto, K Maezawa
    1996, CZECHOSLOVAK JOURNAL OF PHYSICS, 46, 779 - 780, English
    [Refereed]
    Scientific journal

  • Tou Hideki, Kitaoka Yoshio, Asayama Kunisuke, Geibel Christoph, Schank Christina, Steglich Frank
    The nuclear-spin-lattice relaxation rate, 27(1/T1), of the high-quality polycrystalline UPd2Al3 with a record T c=2 K and the narrowest Al NQR linewidth to date of 12 kHz has been measured in zero magnetic field by the NQR technique. 27(1/T1) below T c has been found to obey the T3- law at least down to 0.18 K, giving strong evidence that the energy gap vanishes along lines on the Fermi surface. From the analysis of 27Al Knight shift below T c, it is shown that the anisotropic residual Knight shift originates from the f-electron susceptibility in the antiferromagnetic state, whereas the isotropic reduction of the shift below T c is due to a singlet pairing nature of the superconductivity. Both the results of 27(1/T1) and 27Al Knight shift in UPd2Al3 can be reproduced consistently by a d-wave pairing model characterized by lines of vanishing gap on the Fermi surface.
    The Physical Society of Japan (JPS), Mar. 1995, J Phys Soc Jpn, 64(3) (3), 725 - 729, English

  • Y. Kitaoka, H. Tou, G. -q. Zheng, K. Ishida, K. Asayama, T. C. Kobayashi, A. Kohda, N. Takeshita, K. Amaya, Y. Onuki, G. Geibel, C. Schank, F. Steglich
    Feb. 1995, PHYSICA B-CONDENSED MATTER, 206(1-4) (1-4), 55 - 61, English
    [Refereed]
    Scientific journal

  • Tou Hideki, Kitaoka Yoshio, Asayama Kunisuke, Mentink Sjoerd, Nieuwenhuys Gerard, Menovsky Alois, Mydosh John
    Systematic measurements of the NQR spectrum and the nuclear-spin-lattice relaxation rate, 1/T1, of 27Al in the heavy-fermion antiferromagnetic (AF) compound CePd2Al3 have revealed that the magnetic nature dramatically changes from showing long-range and inhomogeneous AF ordering for annealed and as-cast polycrystals, respectively, to a disappearance of any type of magnetic ordering for single crystals. A close relationship between the magnetic ordering and the structural disorder in the Al layers isolated from the Ce–Pd layers is demonstrated. The exchange coupling via the Al layers along the c-axis, which leads to the AF ground state, critically depends on the occupation and distribution of Al atoms as proposed by Mentink et al. It is pointed out that the randomness remaining inevitably in the Al layers masks the intrinsic magnetic excitation in the AF ordered state.
    The Physical Society of Japan (JPS), Nov. 1994, J Phys Soc Jpn, 63(11) (11), 4176 - 4185, English

  • Mentink S. A. M., Nieuwenhuys G. J., Menovsky A. A., Mydosh A., Tou Hideki, Kitaoka Y.
    The long-range planar-type antiferromagnetic ordering in the heavy-fermion compound CePd2Al3 is shown to critically depend on the exact occupation and distribution of aluminum atoms over their available lattice sites. A poly-crystalline sample (TN=2.7 K) is systematically compared with a nonordering single crystal, by means of susceptibility, specific heat, and site-specific Al-NQR/NMR experiments. Implications for other Al-containing heavy-fermion systems are discussed.
    American Physical Society, Jun. 1994, Physical review. B, Condensed matter, 49(22) (22), 15759 - 15763, English

  • Tou Hideki, Matsumura Masahiro, Yamagata Hideki
    The nuclear spin-lattice relaxation rate $1/T_{1}$ of 63Cu was measured in the range from 1.5 to 300 K for $x{=}0.0625$ and $x{=}0.08$ in (La1-xBax)2CuO4. In the high-temperature tetragonal (HTT) and the low-temperature orthorhombic (LTO) phases in the normal state, $1/T_{1}T$ for both samples follows the Curie-Weiss law, $C/(T+\theta)$, suggesting that the two-dimensional (2D) antiferromagnetic (AF) fluctuation among Cu spins is dominant, similarly to the (La1-xSrx)2CuO4 system. In the HTT and LTO phases, no significant differences except for a slight difference in $\theta$ were observed between the two samples. In the low-temperature tetragonal (LTT) phase for $x{=}0.0625$, $1/T_{1}$ diverges at about 35 K, confirming the existence of magnetic ordering. The magnetic ordering at the finite temprature suggedsts that the dominant 2D-AF correlation of Cu spins in the HTT or LTO phase becomes the 3D-AF correlation derived from the some interactions along the $c$ axis in the LTT phase.
    The Physical Society of Japan (JPS), May 1993, J Phys Soc Jpn, 62(5) (5), 1474 - 1477, English

  • Tou Hideki, Matsumura Masahiro, Yamagata Hideki
    In (La1-xBax)2CuO4, the Cu-NQR spectra for $x{=}0.0625$ and $x{=}0.08$ were observed in each phase of the crystal structure. The temperature dependence of the spin echo decay rate, $T_{2}^{-1}$, was also measured from 1.5 K to 300 K for both samples. The two well-separated sets of NQR spectra were observed in the high-temperature tetragonal (HTT) and low-temperature orthorhombic (LTO) phases in both samples. The spectrum at 1.5 K in the low-temperature tetragonal (LTT) phase for $x{=}0.0625$ is abnormally broadened compared to the spectra in the HTT and LTO phases, and $T_{2}^{-1}$ shows strong divergence at about 35 K. These two abnormal static and dynamical results indicate that the electronic state of the Cu atom changes from a nonmagnetic to magnetic one in the LTO$\rightarrow$LTT transition, and some magnetic phase transition occurs at about 35 K which is lower than the LTT transition temperature, 60 K.
    The Physical Society of Japan (JPS), May 1992, J Phys Soc Jpn, 61(5) (5), 1477 - 1480, English

■ MISC
  • High-field NMR study on the anomalous electronic states in praseodymium-based non-Kramers systems
    久保徹郎, 藤秀樹, 小手川恒, 播磨尚朝, 東中隆二, 中間彰浩, 青木勇二, 佐藤英行, 草ノ瀬優香, 鬼丸孝博, 山中隆義, 佐々木孝彦
    2023, 東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, 2022

  • 非クラマースプラセオジム化合物における低エネルギー励起と短距離相関の単結晶NMRによる研究—High-field NMR study on the anomalous electronic states in praseodymium-based non-Kramers systems
    久保 徹郎, 藤 秀樹, 小手川 恒, 播磨 尚朝, 東中 隆二, 中間 彰浩, 青木 勇二, 佐藤 英行, 草ノ瀬 優香, 鬼丸 孝博, 山中 隆義, 佐々木 孝彦
    [仙台] : 東北大学金属材料研究所附属強磁場超伝導材料研究センター, 2022, 東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, 97 - 99, Japanese

  • Origin of the non-magnetic phase transition in CeCoSi revealed by NMR
    真砂全宏, 小手川恒, 藤秀樹, 谷田博司
    2020, 日本物理学会講演概要集(CD-ROM), 75(1) (1)

  • Study of the non-magnetic phase in CeCoSi by NMR
    真砂全宏, 小手川恒, 藤秀樹, 谷田博司
    2020, 日本物理学会講演概要集(CD-ROM), 75(2) (2)

  • PrT2Al20(T=Nb,Ta)のNMR緩和率の結晶場モデルに基づく解析
    久保徹郎, 藤秀樹, 三宅遼磨, 松野治貴, 小手川恒, 播磨尚朝, 東中隆二, 中間章浩, 青木勇二, 佐藤英行, 井原慶彦, 後藤貴行, 佐々木孝彦
    22 Mar. 2019, 日本物理学会講演概要集(CD-ROM), 74(1) (1), ROMBUNNO.14aS‐PS‐74, Japanese

  • 単結晶CeCoSiのNMRによる研究
    真砂全宏, 小手川恒, 藤秀樹, 谷田博司
    2019, 日本物理学会講演概要集(CD-ROM), 74(2) (2)

  • RT2Al20(R=La,Pr;T=Nb,Ta)のNMR/NQRスペクトル解析
    久保徹郎, 藤秀樹, 三宅遼磨, 松野治貴, 小手川恒, 播磨尚朝, 東中隆二, 中間章浩, 青木勇二, 佐藤英行, 井原慶彦, 後藤貴行, 佐々木孝彦
    23 Mar. 2018, 日本物理学会講演概要集(CD-ROM), 73(1) (1), ROMBUNNO.23aPS‐96, Japanese

  • 11B‐NMRからみたU系化合物UNi4Bの磁気異方性
    岸本恭来, 松野治貴, 小林史明, 小手川恒, 藤秀樹, 齋藤開, 網塚浩, 本間佳哉, 仲村愛, LI D, 本多史憲, 青木大
    25 Sep. 2017, 日本物理学会講演概要集(CD-ROM), 72(2) (2), ROMBUNNO.21pF21‐2, Japanese

  • 強磁性超伝導体UGe2の圧力下73Ge‐NQR測定
    野間雄一朗, 久保徹郎, 小手川恒, 藤秀樹, 播磨尚朝, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, HALLER E. E, 仲村愛, 本間佳哉, 本多史憲, 青木大
    25 Sep. 2017, 日本物理学会講演概要集(CD-ROM), 72(2) (2), ROMBUNNO.21aF21‐2, Japanese

  • U1-xThxBe13のNMRによる研究
    松野治貴, 山崎翔太, 森田恭平, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦, 清水悠晴, 中村愛, 本間佳哉, LI D, 本多史憲, 青木大
    25 Sep. 2017, 日本物理学会講演概要集(CD-ROM), 72(2) (2), ROMBUNNO.21aF21‐10, Japanese

  • 強磁性超伝導体UGe2の圧力下73Ge‐NQRによる磁気ゆらぎの研究
    野間雄一朗, 久保徹郎, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, HALLER E.E, 仲村愛, 本間佳哉, 本多史憲, 青木大
    21 Mar. 2017, 日本物理学会講演概要集(CD-ROM), 72(1) (1), ROMBUNNO.17pK‐PS‐29, Japanese

  • Al-NQR/NMR studies of field-insensitive heavy fermion compound SmTa2Al20
    Nakase J, Miyake R, Kubo T, Kawase R, Kotegawa H, Tou H, Yamada A, Higashinaka R, Matsuda T. D, Aoki Y
    <p>磁場に鈍感な重い電子系であるSmTa_2_Al_20_のAl−NQR/NMRを行った。約3K以下でAl−NQR線幅の増大が観測され、NMR緩和率にも異常が観測された。Smイオンが磁気的に秩序していることが明らかになった。当日は、現在行っている単結晶試料の結果もあわせて報告する予定である。</p>
    The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72(0) (0), 2413 - 2413, Japanese

  • Hideki Tou
    2017, JPSJ News and Comments, 13, 09, English
    [Refereed]
    Introduction scientific journal

  • 岸本恭来, 小手川恒, 藤秀樹, 齋藤開, 網塚浩, 本間佳哉, 仲村愛, LI Dexin, 本多史憲, 青木大

    UNi4BはT〜20 Kでトロイダル磁気秩序が発現する。この磁気状態で電流を印加することにより磁化を増強など非常に興味深い振る舞いを示すことが理論的に予測されている。今回我々は、電流を印加しながらNMR実験を行うことでUNi4Bの電流磁気効果を検証した。当日はその結果を発表する予定である。

    The Physical Society of Japan, 23 Sep. 2016, 日本物理学会講演概要集(CD-ROM), 71(2) (2), ROMBUNNO.15aPS‐101 - 2163, Japanese

  • 野間雄一朗, 久保徹郎, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, HALLER E.E, 仲村愛, 本間佳哉, 本多史憲, 青木大

    UGe_2_はT_C_＝52 Kの強磁性体でありながら圧力下で超伝導を発現する。強磁性相内に磁化が異常に増大する温度(T_X_)が存在するが、過去の圧力下の^73^Ge-NQR実験ではT_X_でのスピン-格子緩和率1/T_1_の発散がみられなかった。そこで今回我々はT_X_での磁気ゆらぎの詳細を明らかにするため、圧力下^73^Ge-NQRを行いスピン-スピン緩和時間T_2_を測定した。発表ではスピン-格子緩和時間T_1_およびT_2_の測定結果を報告し、T_X_近傍での磁気ゆらぎについて議論する。

    The Physical Society of Japan, 23 Sep. 2016, 日本物理学会講演概要集(CD-ROM), 71(2) (2), ROMBUNNO.13aJD‐7 - 1757, Japanese

  • 野間雄一朗, 久保徹郎, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, HALLER E. E, 仲村愛, 本間佳哉, 本多史憲, 青木大
    The Physical Society of Japan (JPS), 22 Mar. 2016, 日本物理学会講演概要集(CD-ROM), 71(1) (1), ROMBUNNO.20PBL‐2 - 2060, Japanese

  • Kotegawa H, Fukumoto K, Akebi R, Tou H, Matsuda T. D, Yamamoto E, Haga Y, Fisk Zachary, Onuki Y, Aoki D, Flouquet Jacques
    The Physical Society of Japan (JPS), 19 Mar. 2016, 日本物理学会講演概要集, 71(1) (1), 2063 - 2063, Japanese

  • Kubo T, Miyake R, Matsuno H, Kotegawa H, Tou H, Harima H, Higashinaka R, Nakama A, Aoki Y, Sato H, Ihara Y, Goto T, Sasaki T
    The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71(0) (0), 2011 - 2011, Japanese

  • ウラン化合物重い電子系超伝導体URhGe,UBe13の単結晶作製と基礎物性測定
    藤秀樹, 小手川恒, 松野治貴, 岸本恭来, 野間雄一郎, 本多史憲, 本間佳哉, 李徳新, 仲村愛, 青木大
    2016, 東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM), 33, 137‐138, Japanese

  • 強磁性超伝導体UGe2の73Ge‐NMRによる磁気揺らぎの研究
    野間雄一朗, 久保徹郎, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, HALLER E.E, 仲村愛, 本間佳哉, 本多史憲, 青木大
    24 Sep. 2015, 日本物理学会講演概要集(CD-ROM), 70(2) (2), ROMBUNNO.17APS-121, Japanese

  • Akita S, Kitagawa S, Kotegawa K, Tou H, Izawa H, Mizuguchi Y, Miura O, Asano T, Higashinaka R, Matsuda T, Aoki Y, Takano Y, Nagao M
    The Physical Society of Japan (JPS), 16 Sep. 2015, 日本物理学会講演概要集, 70(2) (2), 1897 - 1897, Japanese

  • Fukumoto K, Kotegawa H, Tou H, Akebi R, Matsuda TD, Yamamoto E, Haga Y, Fisk Zachary, Onuki Y, Aoki D, Flouquet Jacques
    The Physical Society of Japan (JPS), 16 Sep. 2015, 日本物理学会講演概要集, 70(2) (2), 1912 - 1912, Japanese

  • 73Ge-NMR/NQR Investigation of Magnetic Properties of URhGe
    Hisashi Kotegawa, Kenta Fukumoto, Toshihiro Toyama, Hideki Tou, Hisatomo Harima, Atsushi Harada, Yoshio Kitaoka, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki, Kohei M. Itoh, Eugene E. Haller
    We report 73Ge-NMR and NQR results for ferromagnetic (FM) superconductor
    URhGe. The magnitude and direction of the internal field, H_int, and parameters
    of the electric field gradient at the Ge site were determined experimentally.
    Using powdered polycrystalline samples oriented by different methods, the field
    dependences of NMR shift and nuclear spin relaxation rates for H_0 // c (easy
    axis) and H_0 // b were obtained. From the NMR shifts for H_0 // b, we
    confirmed a gradual suppression of the Curie temperature and observed a phase
    separation near the spin reorientation. The observation of the phase separation
    gives microscopic evidence that the spin reorientation under H_0 // b is of
    first order at low temperatures. The nuclear spin-lattice relaxation rate 1/T_1
    indicates that the magnetic fluctuations are suppressed for H_0 // c, whereas
    the fluctuations remain strongly for H_0 // b. The enhancements of both 1/T_1T
    and the nuclear spin-spin relaxation rate 1/T_2 for H_0 // b toward the spin
    reorientation field suggest that the field-induced superconductivity in URhGe
    emerges under the magnetic fluctuations along the b axis and the c axis.
    16 Mar. 2015
    Technical report

  • PrT₂Al₂₀(T=Nb, Ta)の強磁場NMRによる基底状態の研究 (強磁場下の物性の研究 : 磁性)
    久保 徹郎, 松野 治貴, 小手川 恒, 藤 秀樹, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行, 井原 慶彦, 後藤 貴行, 佐々木 孝彦
    東北大学金属材料研究所附属強磁場超伝導材料研究センター, 2015, 東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, 66 - 68, Japanese

  • Kubo T, Kotegawa H, Tou H, Higashinaka R, Nakama A, Aoki Y, Sato H
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 2205 - 2205, Japanese

  • Miyake Ryoma, Kubo Tetsuro, Kotegawa Hisashi, Tou Hideki, Higashinaka Ryuji, Nakama Akihiro, Aoki Yuji, Sato Hideyuki
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 1850 - 1850, Japanese

  • Kubo T, Kotegawa H, Tou H, Higashinaka R, Nakama A, Aoki Y, Sato H, Ihara Y, Goto T, Sasaki T
    The Physical Society of Japan, 2015, Meeting Abstracts of the Physical Society of Japan, 70(0) (0), 2027 - 2027, Japanese

  • U系重い電子系化合物の単結晶作製と基礎物性測定
    藤秀樹, 松野治貴, 岸本恭来, 小手川恒, 久保徹郎, 本多史憲, 本間佳哉, 李徳新, 仲村愛, 青木大
    2015, 東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM), 32, 107‐108, Japanese

  • 9aPS-128 Magnetic-nonmagnetic transition under pressure in helimagnet CrAs
    Nakahara Shingo, Kotegawa Higashi, Tou Hideki, Sugawara Hitoshi
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 432 - 432, Japanese

  • 8aPS-14 ^<27>Al-NMR/NQR measurements for PrTa_2Al_<20>
    Miyake Ryoma, Kubo Tetsuro, Kotegawa Hisashi, Tou Hideki, Higashinaka Ryuji, Nakama Akihiro, Aoki Yuji
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 360 - 360, Japanese

  • 9aBK-7 NMR studies of UBe_<13> at low temperature
    Matsuno H., Morita K., Kotegawa H., Tou H., Haga Y., Yamamoto E., Onuki Y.
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 406 - 406, Japanese

  • 9pBJ-10 Single Crystal Growth and Superconducting Properties of SrPt_3P
    Horie M., Matsuoka E., Kubo T., Kotegawa H., Tou H., Terashima T., Uji S., Harima H., Sugawara H.
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 444 - 444, Japanese

  • 9pBK-12 ^<27>Al-NMR/NQR studies of PrT_2Al_<20>
    Kubo T., Miyake R., Kotegawa H., Tou H., Higashinaka R., Nakama A., Aoki Y., Sato H
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 447 - 447, Japanese

  • 8aPS-56 Study of metamagiietic transition emerging under high pressure in CeRuPO
    Toyama T., Kitagawa S., Kotegawa H., Tou H., Nishiwaki T., Yamauchi R., Matsuoka E., Sugawara H.
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 370 - 370, Japanese

  • 8aPS-103 NMR measurements for itinerant ferromagnet URhGe in the vicinity of field-induced superconducting phase
    Fukumoto K., Kotegawa H., Tou H., Harima H., Haga Y., Yamamoto E., Onuki Y., Aoki D., Itoh K. M., Haller E. E.
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 381 - 381, Japanese

  • 8aPS-62 Surface impedance and NMR studies of Pt_2Si_2
    Aoyama T., Matsuno H., Kubo T., Kotegawa H., Tou H., Mitsuda A., Nagano Y., Araoka N., Wada Y.
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 371 - 371, Japanese

  • 9aPS-105 NMR/NQR study of superconductors La(O,F)BiS_2 and La(O,F)BiSe_2
    Shimizu Y, Akamatsu R, Kotegawa H, Tou H, Izawa H, Mizuguchi Y, Miura O, Asano T, Higashinaka R, Matsuda T, Aoki Y, Tanaka M, Nagao M, Takano Y
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 426 - 426, Japanese

  • 9aPS-108 Hall effect of superconductor La(O,F)BiS_2 under pressure
    Akita S, Kitagawa S, Kotegawa H, Tou H, Izawa H, Mizuguchi Y, Miura O, Asano T, Higashinaka R, Matsuda T, Aoki Y, Nagao M, Takano Y
    The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 427 - 427, Japanese

  • 30aBE-12 Phase diagram of ferromagnet CeRuPO determined by electronical resistivity measurement
    Toyama T., Kitagawa S., Kotegawa H., Tou H., Nishiwaki T., Yamauchi R., Matsuoka E., Sugawara H.
    The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 664 - 664, Japanese

  • 30aBE-13 Pressure dependence of magnetic fluctuations in heavy fermion ferromagnet CeRuPO probed by ^<31>P-NMR
    Kitagawa S., Toyama T., Kotegawa H., Tou H., Yamauchi R., Matsuoka E., Sugawara H.
    The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 664 - 664, Japanese

  • 27pBE-15 NMR/NQR studies at the transition metal sites on PrT_2Al_<20>
    Kubo T., Kotegawa H., Tou H., Higashinaka R., Nakama A., Aoki Y., Sato H.
    The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 556 - 556, Japanese

  • 29pBE-2 Magnetic fluctuations of URhGe investigated by ^<73>Ge-NMR
    Kotegawa H., Fukumoto K., Toyama T., Kitagawa S., Tou H., Farima H., Haga Y., Yamamoto E., Onuki Y., Aoki D., Itoh K. M., Haller E. E.
    The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 645 - 645, Japanese

  • 28aCM-11 NMR/NQR study of a new superconductor La(O,F)BiS_2
    Shimizu Y, Tomita Y, Kotegawa H, Tou H, Izawa H, Mizuguchi Y, Miura O, Asano T, Nakajima T, Higashinaka R, Matsuda T, Aoki Y, Demura S, Deguchi K, Nagao M, Takano Y
    The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 593 - 593, Japanese

  • カゴ状化合物LaBe13のNMRによる研究
    松野治貴, 森田恭平, 小手川恒, 藤秀樹, 清水悠晴, 清水悠晴, 柳澤達也, 網塚浩, 芳賀芳範, 山本悦嗣, 大貫惇睦
    2014, 日本物理学会講演概要集, 69(2) (2)

  • PrNb₂Al₁₀の⁹³Nb-NMRによる低エネルギー磁気励起の研究 (強磁場下の物性の研究 : 磁性)
    藤 秀樹, 久保 徹郎, 小手川 恒
    東北大学金属材料研究所附属強磁場超伝導材料研究センター, 2014, 東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, 90 - 92, Japanese

  • High-Pressure ^<31>P-NMR study on heavy fermion ferromagnet CeRuPO
    Kitagawa S., Kotegawa H., Tou H., Yamauchi R., Matsuoka E., Sugawara H.
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 593 - 593, Japanese

  • Pressure-induced structural phase transition and superconductivity in AuTe_2
    Kitagawa S., Kotegawa H., Tou H., Ishii H., Kudo K., Nohara M., Harima H.
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 440 - 440, Japanese

  • Pressure effect and NMR study in ferromagnet Celr_3B_2
    Murakami K., Kotegawa H., Kubota K., Nagashima S., Sugawara H., Tou H.
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 462 - 462, Japanese

  • Temperature-pressure-magnetic field phase diagram of ferromagnet CeRuPO
    Toyama T., Kitagawa S., Kotegawa H., Tou H., Yamauchi R., Matuoka E., Sugawara H.
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 462 - 462, Japanese

  • (Al,Nb)-NMR and NQR studies on PrNb_2Al_<20>
    Kubo T., Kotegawa H., Tou H., Higashinaka R., Nakama A., Aoki Y., Sato H.
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 491 - 491, Japanese

  • La-and Pt-NMR studies on charge-density-waves and superconductivity in LaPt_2Si_2
    Kubo T., Kizaki Y., Kotegawa H., Tou H., Nagano Y., Araoka N., Mitsuda A., Wada H.
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 530 - 530, Japanese

  • Under pressure ^<77>Se-NMR study of iron-based superconductor FeSe
    Fujii K., Kotegawa H., Tou H., Takeya H., Mizuguchi Y., Takano Y.
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 524 - 524, Japanese

  • UBe13及びLaBe13のNMRによる研究
    松野治貴, 森田恭平, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦, 清水悠晴, 柳澤達也, 網塚浩
    26 Aug. 2013, 日本物理学会講演概要集, 68(2) (2), 554, Japanese

  • Matsuno H, Morita K, Kotegawa H, Tou H, Haga Y, Yamamoto E, Onuki Y, Shimizu Y, Yanagisawa T, Amitsuka H
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 554 - 554, Japanese

  • NMR-measurement under pressure in UCoAl
    Akebi R, Kotegawa H, Nohara H, Tou H, Matsuda T.D, Yamamoto E, Haga Y, Fisk Zachary, Onuki Y, Aoki D, Flouquet Jacques
    The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 505 - 505, Japanese

  • 29aXB-11 NMR study under pressure in ferromagnetic compound CeIr_3B_2
    Murakami K., Kotegawa H., Kubota K., Nagashima S., Sugawara H., Tou H.
    The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 687 - 687, Japanese

  • 29pXB-7 ^9Be-NMR study of UBe_<13> in the superconductivity state
    Matsuno H., Morita K., Kotegawa H., Tou H., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 720 - 720, Japanese

  • 29pXG-4 ^<77>Se-NMR study of fine iron-based superconductor FeSe
    Fujii K., Kotegawa H., Tou H., Takeya H., Mizuguchi K., Takano Y.
    The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 721 - 721, Japanese

  • 29pXB-4 NMR-measurement under pressure near the Quantum Critical End Point in UCoAl
    Akebi R, Kotegawa H, Nohara H, Tou H, Matsuda T. D, Yamamoto E, Haga Y, Fisk Zachary, Onuki Y, Aoki D, Flouquet Jacques
    The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 719 - 719, Japanese

  • 新しい超伝導体La(O,F)BiS2のNMR/NQRによる研究
    清水祐貴, 冨田佑介, 小手川恒, 藤秀樹, 井澤宏輝, 水口佳一, 三浦大介, 出村郷志, 出村郷志, 出口啓太, 出口啓太, 長尾雅則, 高野義彦, 高野義彦
    2013, 日本物理学会講演概要集, 68(2) (2)

  • Rattling in caged compounds
    高畠 敏郎, 藤 秀樹
    アグネ技術センター, Nov. 2012, 固体物理, 47(11) (11), 547 - 564, Japanese

  • 20pPSB-25 Low temperature ^<77>Se-NMR study of FeSe
    Fujii K., Kotegawa H., Tou H., Takeya H., Mizuguchi K., Takano Y.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 562 - 562, Japanese

  • 21pFE-8 ^<91>Zr-NMR Study in Layered Nitride Superconductor Li_xZrNCl
    Kotegawa H., Oshiro S., Tou H., Kasahara Y., Kishiume T., Taguchi Y., Iwasa Y.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 603 - 603, Japanese

  • 20pFH-12 Cu-NMR study of heavy fermion state in single crystal CeCu_6
    Kuroda K., Morita K., Kotegawa H., Sugawara H., Tou H., Sakurai T., Ohta H., Tanida H., Sera M.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 549 - 549, Japanese

  • 20aPSA-42 Magnetoresistance of CeFePO
    Yamauchi R., Kubota K., Matsuoka E., Sugawara H., Kotegawa H., Tou H.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 516 - 516, Japanese

  • 20aPSA-28 NMR and pressure effect in CeIr_3B_2
    Murakami K., Kotegawa H., Kubota K., Nagashima S., Sugawara H., Tou H.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 513 - 513, Japanese

  • 20aPSB-11 Single crystal growth and physical properties in YbOs_2Si_2
    Ohtani A., Morimoto Y., Sugawara H., Matsuoka E., Kotegawa H., Tou H.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 526 - 526, Japanese

  • 20aPSA-27 NMR studies of ferromagnetic compound CeRu_2Al_2B
    Matsuno H., Nohara H., Kotegawa H., Matsuoka E., Tomiyama Y., Sugawara H., Harima H., Tou H.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 512 - 512, Japanese

  • 20aPSA-13 NMR-measurement near the Quantum Critical End Point in UCoAl
    Akebi R, Kotegawa H, Nohara H, Tou H, Matsuda T. D, Yamamoto E, Haga Y, Fisk Zachary, Onuki Y, Aoki D, Flouquet Jacques
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 509 - 509, Japanese

  • 25pYA-5 NMR study of Fe-based superconductors K_xFe_<2-y>Se_2
    TOMITA Y., KOTEGAWA H., TOU H., MIZUGUCHI Y., TAKEYA H., TAKANO Y.
    The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 633 - 633, Japanese

  • 25pYB-1 NMR study of Heavy - Fermion Superconductivity in UBe_<13>
    Morita K., Hara Y., Kotegawa H., Tou H., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 636 - 636, Japanese

  • 27pYB-8 High-magnetic field NMR in heavy fermion compound CeCu_6
    Kuroda K., Morita K., Kotegawa H., Sugawara H., Tou H.
    The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 699 - 699, Japanese

  • 25pPSB-20 Sm isotopic substitution effect of SmOs_4Sb_<12>
    Otani A., Ueda T., Matsuoka E., Sugawara H., Kotegawa H., Tou H.
    The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 649 - 649, Japanese

  • 24aCJ-1 NMR studies of type-I Clathrate Ba_8Ga_<16>Sn_<30>
    Furumoto K., Sonoda K., Kotegawa H., Tou H., Suekuni K., Saiga Y., Takabatake T.
    The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 872 - 872, Japanese

  • 24pPSB-51 Electrical resistivity in CeIr_3Si_2 and CeIr_3B_2 under high pressure
    Kubota K., Nagashima S., Matsuoka E., Sugawara H., Murakami K., Kotegawa H., Tou H., Sakurai T., Ohta H.
    The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 576 - 576, Japanese

  • 鉄系超伝導体KxFe2−ySe2のNMR測定 II
    冨田佑介, 小手川恒, 藤秀樹, 水口佳一, 竹屋浩幸, 高野義彦
    05 Mar. 2012, 日本物理学会講演概要集, 67(1) (1), 633, Japanese

  • 25pYB-7 NMR-measurements under pressure in UCoAl with Quantum Critical End Point
    Nohara H, Kotegawa H, Tou H, Matsuda T.D, Yamamoto E, Haga Y, Fisk Zachary, Onuki Y, Aoki D, Flouquet Jacques
    The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 638 - 638, Japanese

  • Spin dynamics in UBe₁₃ : ⁹Be-NMR studies (Proceedings of International Workshop on Heavy Fermions : TOKIMEKI 2011)
    TOU Hideki, MORITA Kyohei, KOTEGAWA Hisashi
    Physical Society of Japan, 2012, Journal of the Physical Society of Japan, 81, SB024 - 1-4, English

  • 22aPS-73 Ga-NMR studies of type-I Clathrate Ba_8Ga_<16>Sn_<30>
    Furumoto K., Sonoda K., Kotegawa H., Tou H., Suekuni K., Saiga Y., Takabatake T.
    The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 526 - 526, Japanese

  • 22aPS-96 Ba-NMR study of Ba_8Si_<46>
    Muramoto R., Kotegawa H., Tou H., Yamanaka S.
    The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 531 - 531, Japanese

  • 23aPS-44 High-magnetic field NMR studies in heavy fermion compound CeCu_6
    Kuroda K., Morita K., Kotegawa H., Sugawara H., Tou H.
    The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 587 - 587, Japanese

  • 24aGC-8 Magnetic field dependence of the Be-NMR relaxation rate in UBe_<13>
    Morita K., Hara Y., Kotegawa H., Tou H., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 635 - 635, Japanese

  • 24aGE-11 NMR Study in Layered Nitride Superconductor Li_xZrNCl
    Kotegawa H., Oshiro S., Tou H., Kasahara Y., Kishiume T., Taguchi Y., Iwasa Y.
    The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 639 - 639, Japanese

  • 22pGM-13 NMR Study in K_xFe_<2-y>Se_2
    Kotegawa H, Tomita Y, Tou H, Mizuguchi Y, Takeya H, Takano Y
    The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 551 - 551, Japanese

  • KxFe2−ySe2のNMRによる研究
    小手川恒, 冨田佑介, 藤秀樹, 水口佳一, 竹屋浩幸, 高野義彦
    24 Aug. 2011, 日本物理学会講演概要集, 66(2) (2), 551, Japanese

  • 23pGC-6 NMR-measurements in the vicinity of metamagnetic transition in UCoAl
    Nohara H, Kotegawa H, Tou H, Matsuda T, Yamamoto E, Haga Y, Fisk Zachary, Onuki Y, Aoki D, Flouquet Jacques
    The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 610 - 610, Japanese

  • 28aRA-10 NMR spectroscopy apparatus for mass-selected, gas-phase ions II
    Tona M., Fujihara A., Ishikawa H., Sakurai M., Tou H., Ohta H., Fuke K.
    The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 220 - 220, Japanese

  • 28aEC-13 La-NMR studies of La-based caged compounds LaT_2Zn_<20>(T=Ru,Ir)
    Asaki K., Tou H., Kotegawa H., Matsumoto K. T., Inoue Y. F., Onimaru T., Takabatake T.
    The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 661 - 661, Japanese

  • 27pPSB-24 Ba-NMR study of Ba_8Si_<46>
    Muramoto R., Kotegawa H., Tou H., Yamanaka S.
    The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 655 - 655, Japanese

  • 25aEC-4 Magnetic field dependence of the Be-NMR relaxation rate in UBe_<13>
    Morita K., Hara Y., Kotegawa H., Tou H., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 518 - 518, Japanese

  • ぺロブスカイト層を含む鉄系超伝導体の高圧下電気抵抗測定とNMR測定
    冨田佑介, 田尾幸樹, 小手川恒, 藤秀樹, 荻野拓, 堀井滋, 岸尾光二, 下山淳一
    The Physical Society of Japan (JPS), 03 Mar. 2011, 日本物理学会講演概要集, 66(1) (1), 566 - 566, Japanese

  • 27pPSB-9 NMR-measurements in the vicinity of metamagnetic transition in UCoAl
    Nohara H, Kotegawa H, Tou H, Matsuda T, Yamamoto E, Haga Y
    The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 652 - 652, Japanese

  • 領域8,領域7,領域10「ラットリングと超伝導・重い電子」(2010年秋季大会シンポジウムの報告)
    藤 秀樹
    一般社団法人日本物理学会, 05 Feb. 2011, 日本物理學會誌, 66(2) (2), 132 - 132, Japanese

  • NMR studies of Ba8Ga16Sn30 clathrates (Proceedings of the International Conference on Heavy Electrons 2010 (ICHE2010))
    Tou H., Sonoda K., Nishikawa Y.
    Physical Society of Japan, 2011, Journal of the Physical Society of Japan, 80, SA039 - 1〜3, English

  • 25pPSB-7 NMR study and pressure effect of FeAs superconductors with perovskite oxide layers
    TOMITA Y, TAO Y, KOTEGAWA H, TOU H, OGINO H, HORII S, KISHIO K, SHIMOYAMA J
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 566 - 566, Japanese

  • 22pPSA-16 NMR study of Fe-based superconductor with perovskite-type blocking layer with T_c>40K Ca_4(Mg_<0.25>Ti_<0.75>)_3 Fe_2As_2O_8 and Ca_5(Sc_<0.5>Ti_<0.5>)_4 Fe_2As_2O_<11>
    TOMITA Y, TAO Y, KOTEGAWA H, TOU H, OGINO H, HORII S, KISHIO K, SHIMOYAMA J
    The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), 558 - 558, Japanese

  • 23aPS-130 Ba-NMR study of Ba_8Si_<46>
    Muramoto R., Kotegawa H., Tou H., Yamanaka S.
    The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 490 - 490, Japanese

  • 23pPSA-5 Magnetic field dependence of the Be-NMR relaxation rate in UBe_<13>
    Morita K., Hara Y., Kotegawa H., Tou H., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 512 - 512, Japanese

  • 25aWJ-4 La-NMR studies of La-based caged compounds LaRu_2Zn_<20>,LaIr_2Zn_<20>
    Asaki K., Tou H., Kotegawa H., Matsumoto K. T., Inoue Y. F., Onimaru T., Takabatake T.
    The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 584 - 584, Japanese

  • 26aRH-7 NMR spectroscopy apparatus for mass-selected, gas-phase ions
    Tona M., Fujihara A., Ishikawa H., Sakurai M., Tou H., Ohta H., Fuke K.
    The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 167 - 167, Japanese

  • 23aPS-50 High-pressure NMR on SrFe_2As_2 with large indenter
    Kawazoe T., Kotegawa H., Sugawara H., Takeda K., Tou H., Kobayashi T. C.
    The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 471 - 471, Japanese

  • 23aPS-46 Se/Te-NMR study of Fe(Te_<1-x>Se_x) and Fe(Te_<1-x>S_x)
    Hara Y, Nohara H, Kotegawa H, Tou H, Mizuguti Y, Takano Y
    The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 470 - 470, Japanese

  • 23aPS-47 Se-NMR studies of FeSe_x : sample and magnetic field dependence
    Nohara H, Hara Y, Kotegawa H, Tou H, Mizuguti Y, Takano Y
    The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 470 - 470, Japanese

  • 鉄系超伝導体Fe(Te1−xSex)のNMRによる研究
    原悠大, 野原弘貴, 小手川恒, 藤秀樹, 水口佳一, 水口佳一, 水口佳一, 高野義彦, 高野義彦, 高野義彦
    18 Aug. 2010, 日本物理学会講演概要集, 65(2) (2), 470, Japanese

  • FeSexにおけるNMR試料依存性と磁場依存性
    野原弘貴, 原悠大, 小手川恒, 小手川恒, 藤秀樹, 藤秀樹, 水口佳一, 水口佳一, 水口佳一, 高野義彦, 高野義彦, 高野義彦
    18 Aug. 2010, 日本物理学会講演概要集, 65(2) (2), 470, Japanese

  • Hara Y, Nohara H, Kotegawa H, Tou H, Mizuguti Y, Takano Y
    The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 675 - 675, Japanese

  • 20aGE-5 ^<15>N-NMR of the Layerd Nitride Superconductor Li_xZrNCl
    Oshiro S., Kotegawa H., Tou H., Taguchi S., Kasahara Y., Kishiume K., Iwasa Y.
    The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 529 - 529, Japanese

  • 20aGD-5 NQR study under pressure of itinerant ferromagnet LaFe_4As_<12>
    Asaki K., Kotegawa H., Tou H., Tatsuoka S., Higashinaka R., Namiki T., Sato H.
    The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 526 - 526, Japanese

  • 21pGR-10 NMR of clathrate Ba_8Ga_<16>Sn_<30> IV
    Sonoda K., Nakahara N., Kotegawa H., Tou H., Suekuni K., Takabatake T.
    The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 887 - 887, Japanese

  • 22pGH-11 High-pressure NMR on SrFe_2As_2 with large indenter
    Kawazoe T., Kotegawa H., Sugawara H., Takeda K., Tou H., Kobayasi T. C.
    The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 661 - 661, Japanese

  • 鉄系超伝導体Fe(Te1−xSex)及びFe(Te1−xSx)のSe/Te‐NMRによる研究
    原悠大, 野原弘貴, 小手川恒, 藤秀樹, 水口佳一, 水口佳一, 高野義彦, 高野義彦
    01 Mar. 2010, 日本物理学会講演概要集, 65(1) (1), 675, Japanese

  • 23aGH-10 ^<75>As-NMR study and pressure effect of iron based superconductor Sr_2VFeAsO_3
    TAO Yuuki, KOTEGAWA Hisashi, TOU Hideki, OGINO Hiraku, HORII Shigeru, KISHIO Kouji, SHIMOYAMA Jun-ichi
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 676 - 676, Japanese

  • 25aWH-3 NMR study and pressure effect of FeAs superconductors with perovskite oxide layers
    TAO Y, KOTEGAWA H, TOU H, OGINO H, HORII S, KISHIO K, SHIMOYAMA J
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 581 - 581, Japanese

  • 25pYD-11 NMR Studies of clathrate Ba_8Ga_<16>Sn_<30> III
    Sonoda K., Kotegawa H., Tou H., Suekuni K., Takabatake T.
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 741 - 741, Japanese

  • 25aPS-5 NMR/NQR studies of filled skutterudite LaFe_4As_<12>
    Asaki K., Kotegawa H., Tou H., Tsuruoka S., Higashinaka R., Sato H., Namiki T.
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 417 - 417, Japanese

  • 26aPS-95 ^<75>As-NMR measurement of hole doped (Pr_<1-x>Sr_x)FeAsO
    Tao Y., Kotegawa H., Tou H., Ju Jing, Li Zhaofei, Tanigaki K., Gang Mu, Wen Hei-hu
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 499 - 499, Japanese

  • 26aPS-94 Effect of Uniaxial Stress and High-pressure NMR on SrFe_2As_2
    Kawazoe T., Kotegawa H., Tou H., Sugawara H., Kobayashi T. C.
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 498 - 498, Japanese

  • 26pTJ-4 R(R=Pr, Nd) Ion Doping Effect on Phase IV of Ce_xLa_<1-x>B_6
    Kondo A., Tanida H., Matsumura T., Tou H., Sera M., Iga F., Sakakibara T.
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 522 - 522, Japanese

  • 27pTJ-2 NMR studies of UBe_<13>
    Tou H., Morita K., Sakano J., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 554 - 554, Japanese

  • 28aRG-4 ^<15>N-NMR of the Layerd Nitride Superconductor Li_xZrNCl
    Oshiro S., Kotegawa H., Tou H., Taguchi S., Kasahara Y., Kishiume K., Takano T., Iwaa Y.
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 557 - 557, Japanese

  • 26aPS-96 Se/Te-NMR study of FeSe and Fe(Te_<1-x>S_x)
    Hara Y, Nomura H, Kotegawa H, Tou H, Mizuguti Y, Takano Y
    The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 499 - 499, Japanese

  • FeSeとFe(Te1−xSx)のSe/Te‐NMRによる研究
    原悠大, 原悠大, 野原弘貴, 野原弘貴, 小手川恒, 小手川恒, 藤秀樹, 藤秀樹, 水口佳一, 水口佳一, 水口佳一, 高野義彦, 高野義彦, 高野義彦
    18 Aug. 2009, 日本物理学会講演概要集, 64(2) (2), 499, Japanese

  • New crystals and new materials: Pressure-induced superconductivity of 34 K in single crystalline SrFe2As2
    小手川 恒, 藤 秀樹, 菅原 仁
    アグネ技術センタ-, Apr. 2009, Solid state physics, 44(4) (4), 267 - 274, Japanese

  • 30pTD-6 ^<15>N-NMR of the Layerd Nitride Superconductor Li_xZrNCl
    Oshiro S., Masaki S., Kotegawa H., Tou H., Taguchi S., Kasahara Y., Kishiume K., Takano T., Iwasa Y.
    The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 665 - 665, Japanese

  • 28aTD-4 Nd Doping Effect on Phase IV of Ce_<0.4>La_<0.6>B_6
    Kondo A., Tanida H., Matsumura T., Tou H., Sera M., Iga F., Sakakibara T.
    The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 588 - 588, Japanese

  • 28pTA-12 Study of Pressure-Induced Superconductivity in Single Crystalline SrFe_2As_2
    Kotegawa H., Kawazoe T., Hara Y., Tou H., Sugawara H.
    The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 614 - 614, Japanese

  • 28pYG-1 Ga-NMR of clathrate Ba_8Ga_<16>Sn_<30> II
    Sonoda K., Kotegawa H., Tou H., Suekuni K., Takabatake T.
    The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 836 - 836, Japanese

  • 鉄系超伝導体FeSeの圧力下Se‐NMRによる研究
    正木了, 正木了, 小手川恒, 小手川恒, 藤秀樹, 藤秀樹, 水口佳一, 水口佳一, 高野義彦, 高野義彦
    The Physical Society of Japan (JPS), 03 Mar. 2009, 日本物理学会講演概要集, 64(1) (1), 614 - 614, Japanese

  • 23aQC-6 ^<15>N-NMR of the Layerd Nitride Superconductor Li_<0.19>ZrNCl
    Oshiro S., Masaki S., Kotegawa H., Tou H., Takano T., Taguchi S., Iwasa Y.
    The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 568 - 568, Japanese

  • 23aQA-7 Study of multipole ordering in single crystal SmRu_4P_<12> by P-NMR
    Masaki S., Kotegawa H., Tou H., Wada S., Mito T., Sugawara H., Kikuchi D., Sato H.
    The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 566 - 566, Japanese

  • 21aPS-52 Magnetic Rare-Earth (Pr) Ion Doping Effect on Phase IV of Ce_xLa_<1-x>B_6
    Taniguchi T., Kondou A., Tanida H., Matsumura T., Tou H., Sera M., Iga F.
    The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 505 - 505, Japanese

  • 21pQB-2 R-ion (R=Nd, Pr) Doping Effect on Phase IV of Ce_<0.6>La_<0.4>B_6
    Kondo A., Taniguchi T., Tanida H., Matsumura T., Tou H., Sera M., Iga F., Sakakibara T.
    The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 527 - 527, Japanese

  • 22pWF-5 NMR of clathrate Ba_8Ga_<16>Sn_<30>
    Sonoda K., Kotegawa H., Nishikawa Y., Tou H., Suekuni K., Avila M.A., Takabatake T.
    The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 779 - 779, Japanese

  • 20aQF-5 Sb-NMR/NQR study of heavy fermion weak ferromagnet YbRhSb
    Awai Y., Kotegawa H., Tou H., Muro Y., Haizaki Y., Takabatake T.
    The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 443 - 443, Japanese

  • 20aQF-6 NMR & NQR study on Yb_2Pd_2M (M=In, Sn)
    Yokoyama T., Kotegawa H., Tou H., Wada S., Bauer E.
    The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 443 - 443, Japanese

  • 23pPSA-7 NMR/NQR studies on the filled skutterudite compound SmRu_4P_<12> III
    Masaki S., Mito T., Tou H., Wada S., Sugawara H., Kikuchi D., Sato H., Takigawa M.
    The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 537 - 537, Japanese

  • 23pPSB-6 Low-energy spin fluctuations in YbAl_3C_3
    Tomisawa S., Mito T., Tou H., Wada S., Kato Y., Kosaka M.
    The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 547 - 547, Japanese

  • 26aWP-8 Sb-NQR study of heavy fermion weak ferromagnet YbRhSb
    Awai Y., Tou H., Wada S., Muro Y., Haizaki Y., Takabatake T.
    The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 633 - 633, Japanese

  • 23pWR-2 Ce_<0.6>La_<0.4>B_6 : Nd-ion Doping Effect on Phase IV
    Kondo A., Tanida H., Tou H., Sera M., Iga F.
    The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 526 - 526, Japanese

  • 24aXA-9 Pressure effect of the Ce_xPr_<1-x>B_6
    Nagai S., Ikeda S., Tou H., Sera M., Iga F.
    The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 655 - 655, Japanese

  • 24aXA-8 Suppression of Phase IV in Ce_xLa_<1-x>B_6 by R-ion Doping
    Kondo A., Tou H., Sera M., Iga F., Sakakibara T.
    The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 655 - 655, Japanese

  • 21pPSA-74 Pressure effect of RB_6 (R=rare-earth element) related compounds
    Sera H., Iwakubo H., Ikeda S., Nagai S., Tou H., Iga F.
    The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 565 - 565, Japanese

  • 18pPSA-49
    Araki R., Kawaguchi M., Kondo A., Tou H., Iga H., Sera M., Mignot J-M.
    The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 523 - 523, Japanese

  • 18pPSA-48 Electric resistivity of CexPr_<1-x>B_6 under the pressure
    Nagai S., Kishimoto S., Tou H., Sera M., Iga F., Mignot J-M.
    The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 523 - 523, Japanese

  • 21aWP-1 Knight shift and hyperfine interactions in UBe_<13>
    Tou H., Tsugawa N., Sera M., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 646 - 646, Japanese

  • 19aWP-10 Magnetic Rare-Earth Ion Doping Effect on Phase IV of Ce_xLa_<1-x>B_6
    Kondo A., Tou H., Sera M., Iga F., Sakakibara T.
    The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 553 - 553, Japanese

  • 20aWP-6 Sb-NMR relaxation rate in filled skutterudite superconductor PrOs_4Sb_<12>
    Inaoka Y., tou H., Sera M., Sugawara H., Sato H.
    The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 614 - 614, Japanese

  • 25aYA-6 NMR relaxation rate under various magnetic fields in PrOs_4Sb_<12>
    Inaoka Y., Tou H., Sera M., Sugawara H., Sato H.
    The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 483 - 483, Japanese

  • 23pPSA-6 ^<31>P NMR study of RFe_4P_<12> (R=Ho, Tm) II
    Kojima K, Hiraoka K, Tou H, Arazeki N, Sekine C, Shirotani I, Sera M
    一般社団法人日本物理学会, 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 407 - 407, Japanese

  • 30aTD-1 ^9Be NMR Knight shift studies of a heavy-Fermion superconductor UBe_<13>
    Tsugawa N., Tou H., Sera M., Harima H., Haga H., Onuki Y.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 643 - 643, Japanese

  • 28pUE-1 Unusual Pressure Dependence of the multipolar interactions in Ce_xLa_<1-x>B_6
    Ikeda S., Iwakubo H., Umeo K., Tou H., Sera M., Iga F., Uwatoko Y., Hane S., Kosaka S., Miyauchi Y., Kunii S.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 591 - 591, Japanese

  • 28pPSA-3 Sb-NMR relaxation rate in filled skutterudite superconductor PrOs_4Sb_<12>
    Inaoka Y., Doi M., tou H., Sera M., Sugawara H., Sato H.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 598 - 598, Japanese

  • 28aUF-2 NMR/NQR probe for multipole degree of freedom in PrOs_4Sb_<12>
    Tou H., Doi M., Inaoka Y., Sera M., Sugawara H., Sato H.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 577 - 577, Japanese

  • 28pUE-4 Multipolar interactions and magnetic phase diagram of Ce_xPr<1-x>B_6
    Kishimoto S., Tou H., Sera M., Iga F.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 592 - 592, Japanese

  • 28pUE-2 Ce_<0.7>La_<0.3>B_6 : The Unprecedented Phase By Magnetic Rare-Earth Ion Doping In Phase IV
    Kondo A., Tou H., Sera M., Iga F., Sakkibara T.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 591 - 591, Japanese

  • 28pUE-3 Ce main magnetic ordering phase in Ce_xNd_<1-x>B_6
    Kawaguchi M., Tou H., Sera M., Iga H., Sakakibara T.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 591 - 591, Japanese

  • 29pPSA-5 Thermoelectric Power and its Magnetic Field Effect of Ce_xR_<1-x>B_6
    Iwakubo H., Nakai Y., Tou H., Sera M., Iga F., Kim Moo-Sung
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 629 - 629, Japanese

  • 28pPSA-38 Sb-NMR/NQR study of CeIrSb
    Izumi M., Kawasaki Y., Tanaka T., Kishimoto Y., Ohno T., Tou H., Inaoka Y., Sera M., Shigetoh K., Takabatake T.
    The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 607 - 607, Japanese

  • 28pPSA-5 ^<31>P NMR study of RFe_4P_<12>(R=Ho,Tm)
    Kojima K, Hiraoka K, Tou H, Arazeki N, Sekine C, Shirotani I, Sera M
    一般社団法人日本物理学会, 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 599 - 599, Japanese

  • 22aXD-7 Angle-resolved ^9Be NMR studies of UBe_<13> II
    Tsugawa N., Tou H., Sera M., Harima H., Haga H., Onuki Y.
    The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 500 - 500, Japanese

  • 19pPSA-27 〜<31>P NMR study of skutterudite compound TmFe_4P_<12> II
    Kojima K., Hiraoka K., Tou H., Arazeki N., Sekine C., SHirotani I., Sera M.
    The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 399 - 399, Japanese

  • 19aYG-2 RF surface impedance studies of skutterudite superconductors PrT_4Sb_<12>(T=Os, Ru)
    Tou H., Doi M., Nakai Y., Sera M., Sugawara H., Sato H.
    The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 361 - 361, Japanese

  • 19aYG-1 Sb-Knight shift studies of the superconductor PrOs_4Sb_<12>
    Doi M., Tou H., Sera M., Sugawara J., Sato H.
    The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 360 - 360, Japanese

  • 21aYG-4 Variation of the ground state induced by doping of the magnetic ion into the Phase IV of Ce_xLa_<1-x>B_6
    Kondo A., Kim M. S., Tou H., Sera M., Iga F., Morie T., Sakakibara T.
    The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 473 - 473, Japanese

  • 21aYG-3 The coexistence of magnetic and multipolar ordering in Ce_xPr_<1-x>B_6
    Kishimoto S., Tou H., Sera M., Iga F.
    The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 473 - 473, Japanese

  • 19pXA-10 Superconducting properties of the layered superconductor ZrNCl
    Tou H., Tanaka Y. J., Sera M., Yamanaka S., Kitora J., Taguchi Y., Iwasa Y.
    The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 681 - 681, Japanese

  • 24pPSA-42 Sb NQR study in Alkaline-Earth Filled Skutterudite AFe_4Sb_<12>(A=Sr,Ba)
    Matsumura M, Hyodou G, Kato H, Nishioka T, Tou T, Matsuoka E, Takabatake T, Sera M
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 431 - 431, Japanese

  • 27pWA-1 ^9Be NMR studies of single crystal UBe_<13>
    Tsugawa N., Tou H., Sera M., Haga Y., Onuki Y.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 612 - 612, Japanese

  • 27aWE-12 Sb-NMR /NQR studies of heavy fermion ferromagnet YbRhSb
    Tou H., Nakamura K., Sera M., Muro Y., Haizaki Y., Takabatake T.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 604 - 604, Japanese

  • 27pTA-7 NQR/NMR Studies of magnetic ordered state in filled skutterudite, YbFe_4Sb_<12>
    Kawaguchi M., TOU H., Sera M., Kojima K., Ikeno T., Ishikawa Y.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 610 - 610, Japanese

  • 25pTA-3 Sb-Knight shift studies of the superconductor PrOs_4Sb_<12>
    Doi M., Tou H., Sera M., Yogi M., Kitaoka Y., Kotegawa H., Zheng G.-q., Harima H., Sugawara J., Sato H.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 549 - 549, Japanese

  • 24pWE-6 The Kondo effect on thermopower and resistivity under magnetic fields for Ce_xR_<1-x>B_6 (R=La, Pr, Nd)
    Kirn M. S., Nakai Y., Tou H., Sera M., Iga F., Takabatake T., Kunii S.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 502 - 502, English

  • 24pWE-5 Quadrupolar interaction and Magnetic ordering in Pr_xRi_<1-x>B_6(R=La,Nd)
    Goto S, Sera M, Koshikawa T, Kin Moo-Sung, Tou H, Iga F
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 502 - 502, Japanese

  • 24pWE-2 The coexistence and competition between multipolar and excange interaction in Ce_xPr_<1-x>B_6
    Kishimoto S., Kondo A., Shimono Y., Tou H., Sera M., Iga F, Mignot J-M.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 501 - 501, Japanese

  • 24pWE-4 New ordered state induced by Pr Ion Doping into the Phase IV of Ce_xLa_<1-x>B_6
    Kondo A., Kishimoto S., Shimono Y., Tou H., Sera M., Iga F.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 502 - 502, Japanese

  • 24pWE-1 Thermoelectric power and Kondo effect of Ce_xR_<1-x>B_6(R=La,Pr,Nd)(R=La,Pr,Nd)
    Nakai Y., Kim M. S., Tou H., Sera M., Iga F., Takabatake T.
    The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 501 - 501, Japanese

  • 25aPS-25 ^<31>P NMR study of skutterudite compound TmFe_4P_<12>
    Kojima K, Hiraoka K, Tou H, Arazeki N, Sekine C, Shirotani I, Sera M
    一般社団法人日本物理学会, 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 527 - 527, Japanese

  • M Sera, MS Kim, H Tou, S Kunii
    Dec. 2004, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(12) (12), 3422 - 3428, English

  • 12aPS-41 Sb-NQR study in Alkaline-Earth Filled Skutterudite SrFe_4Sb_<12>
    Matsumura M., Kato H, Nishioka T., Tou T, Matsuoka E, Takabatake T., Sera M.
    The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 349 - 349, Japanese

  • 12aRA-4 Sb-NMR study of single crystal PrOs_4Sb_<12>
    Tou H, Doi M, Sera M, Yogi M, Kitaoka Y, Kotegawa H, Zheng G-q, Harima H, Sugawara H, Sato H
    The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 415 - 415, Japanese

  • 12aRC-2 Multipolar interactions on the IC-C phase transition in Ce_xPr_<1-x>B_6
    Sera M, Kawaguchi M, Kishimoto S, Kondo A, Shimono Y, Tsugawa N, Kim Moo Sung, Tou H, Iga F
    The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 421 - 421, Japanese

  • M Matsumura, T Sasakawa, T Takabatake, S Tsuji, H Tou, M Sera
    May 2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, 58 - 59, English

  • 30aXD-3 Disappearance of Phase IV of CexLa1 xB6 by Magnetic Ion Doping
    Sera M, Goto S, Tou H, Iga F, Morita T, Sakakibara T
    The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 643 - 643, Japanese

  • 30aXE-3 Sb-NMR studies of single crystal PrOs_4Sb_<12>
    Tou H, Doi M, Sera M, Yogi M, Kotegawa H, Zheng G-q, Kitaoka Y, Harima H, Sugawara H, Sato H
    The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 645 - 645, Japanese

  • 30aXD-4 The Kondo effect and magnetic ordering in relevant compounds to CeB_6 dopped by rare-earths
    Kim M S, Tou H, Sera M, Iga F, Takabatake T
    The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 643 - 643, English

  • 28pPSA-2 Nd Doping Effect on Phase IV of Ce_xLa_<1-x>B_6
    Yoshino Y, Goto S, Kim M S, Sera M, Matsuoka E, Iga F, Morie T, Sakakibara T
    The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 602 - 602, Japanese

  • 28pPSA-4 Quadrupolar Interactions and Magnetic Phase Diagram of Pr_xNd_<1-x>B_6
    Koshikawa T, Tanaka Y, Tou H, Sera M, Iga F
    The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 602 - 602, Japanese

  • 28pPSA-7 Magnetic-field and pressure effects on the weak ferromagnetism of YbRhSb
    Haizaki Y., Muro Y, Umeo K, Tou H., Sera M, Takabatake T, Sakakibara T
    The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 603 - 603, Japanese

  • 28aPS-83 Transport and magnetic properties of layered superconductor (Hf,Zr)NCl
    Tanaka Y, Tou H, Sera M., Taguchi Y, Iwasa Y., Sasaki T, Yamanaka S
    The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 574 - 574, Japanese

  • Heavy-fermion weak-ferromagnet YbRhSb
    Muro Yuji, Haizaki Yukio, Kim M. S., Umeo Kazunori, Tou Hideki, Sera Masafumi, Takabatake Toshiro
    A new Yb-based compound YbRhSb with the orthorhombic -TiNiSi-type structure has been synthesized. The magnetic-susceptibility, magnetization, and specific-heat (Cp) measurements of single crystals revealed a ferromagnetic transition at TC = 2.7 K. An extrapolation of the Cp/T data below 1 K yields 370 mJ/mol K2 as the value, and the magnetic entropy reaches only 0.25R ln 2 at TC. The spontaneous moment is unusually small, 3×10–3µB/Yb for B||b, while the magnetization increases to 1.4µB/Yb when the field of 15 T is applied along the a axis. We ascribe the weak ferromagnetism to a canted antiferromagnetic structure based on the observation of a metamagnetic transition and the decrease of TC with the increase of magnetic field.
    American Physical Society, 2004, Physical review. B, 69, 20401 - 1-020401-4, English

  • Transport and magnetic properties of layered superconductor ZrNCl_<1-x>
    Tanaka Y., Tou H., Sera M., Taguchi Y., Iwasa Y., Sasaki T., Yamanaka S.
    The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 729 - 729, Japanese

  • NMR Studies of alkali metal absorbing zeolite LTA
    Kira Hiroshi, Tou Hideki, maniwa Yutaka
    The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 723 - 723, Japanese

  • NMR studies of NFL alloy CeRhSn
    Tou H., Kim M. S., Takabatake T., Sera M.
    The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 563 - 563, Japanese

  • ^<75>As NQR study for Kondo Insulator CeRhAs II
    Matsumura M., Yamagata H., Sasagawa T., Takabatake T., Tou H., Sera M.
    The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 467 - 467, Japanese

  • Multipolar Interactions in Ce_xPr_<1-x>B_6
    Yoshino Y., Okahara Y., Matsuoka E., Tou H., Sera M., Iga F.
    The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 348 - 348, Japanese

  • H Tou, Y Maniwa, S Yamanaka, M Sera
    May 2003, PHYSICA B-CONDENSED MATTER, 329, 1323 - 1324, English

  • μSR Study of magnetic properties of Alkali-Metal loaded Zeolite LTA II
    Kira Hiroshi, Abe Masatoshi, Morikawa Masanori, Matsuda Kazuyuki, Maniwa Yutaka, Tou Hideki, Higemoto Wataru, Kadono Ryosuke, Murakami Youichi
    The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 831 - 831, Japanese

  • ^<75>As NQR/NMR Study in Kondo Semiconductor CeRhAs
    Matsumura M., Yamagata H., Sasakawa T., Takabatake T., Tsuji S., Toh H., Sera M.
    The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 556 - 556, Japanese

  • 強磁場を用いた層状窒化物超伝導体の上部臨界磁場の決定 (強磁場超伝導の研究--低温超伝導体)
    藤 秀樹, 田中 雄紀, 世良 正文
    東北大学金属材料研究所附属強磁場超伝導材料研究センター, 2003, 東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, 2003, 45 - 47, Japanese

  • 新しい超伝導体 電子ドープ型層状窒化物Lix(THF)yHfNCl--風変わりな超伝導体か?
    藤 秀樹
    アグネ技術センタ-, Oct. 2002, 固体物理, 37(10) (10), 779 - 788, Japanese

  • 領域3,7,8「核磁気共鳴による物性研究 : 最近の展開と新領域の開拓」(第57回年次大会シンポジウム(物性分科会)の報告)
    藤 秀樹
    一般社団法人日本物理学会, 05 Jul. 2002, 日本物理學會誌, 57(7) (7), 509 - 509, Japanese

  • K Ishida, D Ozaki, T Kamatsuka, H Tou, M Kyogaku, Y Kitaoka, N Tateiwa, NK Sato, N Aso, C Geibel, F Steglich
    Jul. 2002, PHYSICAL REVIEW LETTERS, 89(3) (3), English

  • H Kira, H Tou, Y Maniwa, Y Murakami
    Mar. 2002, PHYSICA B-CONDENSED MATTER, 312, 789 - 790, English

  • H Tou, Y Maniwa, T Koiwasaki, S Yamanaka
    Mar. 2002, PHYSICA B-CONDENSED MATTER, 312, 155 - 156, English

  • 電子ドープ型層状窒化物の強磁場中超伝導特性 (強磁場下の物性の研究)
    藤 秀樹, 世良 正文, 山中 昭司
    東北大学金属材料研究所附属強磁場超伝導材料研究センター, 2002, 東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, 2002, 145 - 148, Japanese

  • S Yamanaka, H Tou
    Dec. 2001, CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 5(6) (6), 545 - 551, English
    Book review

  • T_2 anomaly in a superconducting Ba_8Si_<46>
    Maniwa Y., Sakamao H., Tou T., Reny E. A., Yamanaka S.
    The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 693 - 693, Japanese

  • NMR studies of ammoniated alkali fullerides
    Tou H., Maniwa Y., Takenobu T., Shimoda H., Iwasa Y., Mitani T.
    The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 691 - 691, Japanese

  • NMR studies of alkali-doped C_<60> polymers
    Ikejiri Hideo, Tou Hideki, Maniwa Yutaka, Yasukawa Masahiro, Yamanaka Shoji
    The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 691 - 691, Japanese

  • NMR studies of MgB_2
    Maniwa Y., Tou H., Itoh T., Takenobu T., Prassides K., Iwasa Y.
    The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 511 - 511, Japanese

  • Magnetic properties of the layered superconductor Li-0.48(THF)(0.3)HfNCl with T-c similar to 26 K
    H Tou, Y Maniwa, T Koiwasaki, S Yamanaka
    May 2001, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 226, 330 - 332, English

  • H Tou, D Omata, Y Maniwa, K Itoh, S Yamanaka
    Nov. 2000, PHYSICA C, 341(Pt.4) (Pt.4), 2139 - 2140, English

  • NMR studies of Li-doped C_<60> polymers
    Ikejiri Hideo, Tou Hideki, Maniwa Yutaka, Yasukawa Masahiro, Yamanaka Shoji
    The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 740 - 740, Japanese

  • NMR studies of superconducting sc-C_<60>
    Kitazume K., Tou H., Maniwa Y., Kosaka M., Tanigaki K.
    The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 738 - 738, Japanese

  • NMR studies of the layered superconductor β-HfNCl.
    Tou H., Maniwa Y., Itoh K., Yamanaka S.
    The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 697 - 697, Japanese

  • NMR of ferromagnetic zeolite LTA
    Maniwa Y., Kira H., Tou T.
    The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 371 - 371, Japanese

  • NMR studies of superconducting sc-C_<60>
    Kitazume K., Tou H., Maniwa Y., Kosaka M., Tanigaki K.
    The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 714 - 714, Japanese

  • Magnetic properties of multi-wall carbon nanotube
    Maniwa Y., Fujiwara R., Kira H., Tou T., Nishibori E., Takata M., Sakata M., Zhao X., Iijima M., Ando Y.
    The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 728 - 728, Japanese

  • NMR studies of the layered superconductor β-HfNCl.
    Tou H., Maniwa Y., Omata D., Itoh K., Yamanaka S.
    The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 698 - 698, Japanese

  • NMR studies of electronic states in Si clathrate compounds
    Sakamoto H., Tou H., Ishii H., Maniwa Y., Reny E. A., Yamanaka S.
    The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 697 - 697, Japanese

  • Properties of Na and K-absorbing zeolite LTA
    Kira H., Tou H., Maniwa Y., Shimizu F., Murakami Y.
    The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 696 - 696, Japanese

  • H. Sakamoto, H. Tou, H. Ishii, Y. Maniwa, E. A. Reny, S. Yamanaka
    Elsevier Science Publishers B.V., 2000, Physica C: Superconductivity and its Applications, 341-348(Pt.4) (Pt.4), 2135 - 2136, English

  • TOU H, MANIWA Y, IWASA Y, SHIMODA H, MITANI T
    2000, Physical Review B, 62(2) (2), R775 - R778

  • 25aH-6 NMR Study in Heavy Fermion Superconductor Upt_3
    Ozaki D, Ishida K, Kitaoka Y, Tou H, Onuki Y, Haga Y, Yamamoto E
    The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 488 - 488, Japanese

  • 26pF-5 Mott transition in alkali-fullerides
    Tou H.
    The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 765 - 765, Japanese

  • 27pF-4 Magnetic properties of potassimu-, and rubidium-laded zeolite X
    Shimizu F., Kira H., Tou H., Murakami Y., Maniwa Y.
    The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 775 - 775, Japanese

  • 27pF-1 NMR studies of the alkali-electrosodalite.
    Tou H., Maniwa Y., Mizoguchi K., Damjanovic L., Srdanov V.I.
    The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 775 - 775, Japanese

  • 27aF-7 Properties of Na and K absorbing zeolite LTA IV
    Kira Hiroshi, Nakao Sinji, Tou Hideki, Maniwa Yutaka, Shimizu Fumihiko, Murakami Youichi
    The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 771 - 771, Japanese

  • 27aF-2 NMR studies of the layered superconductor β-HfNCl
    Tou H., Omata D., Maniwa Y., Itoh K., Yamanaka S.
    The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 770 - 770, Japanese

  • 24pF-5 ^7Li, ^<13>C-NMR studies of superconducting LixCsC_60
    Kitazume K., Tou H., Maniwa Y., Kosaka M., Tanigaki K.
    The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 736 - 736, Japanese

  • Y Maniwa, N Muroga, H Tou, K Kikuchi, S Suzuki, Y Achiba, M Kosaka, K Tanigaki, Y Iwasa, H Shimoda, T Mitani
    Jun. 1999, SYNTHETIC METALS, 103(1-3) (1-3), 2458 - 2461, English

  • H Tou, Y Maniwa, S Taga, Y Iwasa, T Mitani, K Tanigaki, B Gogia, H Suematsu
    Jun. 1999, SYNTHETIC METALS, 102(1-3) (1-3), 1563 - 1564, English

  • H Tou, Y Maniwa, H Shimoda, Y Iwasa, T Mitani
    Jun. 1999, SYNTHETIC METALS, 103(1-3) (1-3), 2447 - 2447, English

  • 29p-PSA-58 NMR Study in Heavy Fermion Superconductor UNi_2Al_3
    Ozaki D., Ishida K., Kitaoka Y., Tou H., Tateiwa N., Sato N., Aso N., Komatsubara T., Geibel C., Steglich F.
    The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 451 - 451, Japanese

  • 31a-XA-4 Properties of Na and K absorbing zeolite LTA
    Kira Hiroshi, Tou Hideki, Maniwa Yutaka, Shimizu Fumihiko, Murakami Youichi
    The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 267 - 267, Japanese

  • 28p-XA-5 Mott transition and antiferromagnetic ordering in (NH_3)K_3C_<60> : Evidence from NMR
    Tou H., Maniwa Y., Shimoda H., Iwasa Y., Mitani T.
    The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 243 - 243, Japanese

  • 29p-XA-3 Resisitivity of single walled carbon nonotube at high temperature
    Saito Y., Tou H., Kumazawa Y., Kataura H., Suzuki S., Achiba Y., Maniwa Y.
    The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 254 - 254, Japanese

  • 29p-XA-7 NMR studies in Multiwall nanotubes III
    Hayashi M., Kumazawa Y., Tou H., Kataura H., Maniwa Y., Agou H., Ono Y., Yamabe T., Tanaka K.
    The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 255 - 255, Japanese

  • Current issues of intercalation and superconductivity in solid state fullerenes
    Y Iwasa, H Shimoda, T Takenobu, S Honjo, T Mitani, H Tou, Y Maniwa, CM Brown, K Prassides
    1999, FULLERENE SCIENCE AND TECHNOLOGY, 7(4) (4), 587 - 598, English

  • Mott transition and antiferromagnetic ordering in (NH_3)K_3C_<60>:^<13>C,^1H-NMR
    TOU H., MANIWA Y., SHIMODA H., IWASA Y., MITANI T.
    The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 325 - 325, Japanese

  • NMR studies of electronic state of C_<60> superconductors : Non-Korringa like behavier
    MANIWA Y., MUROGA N., TOU H., SATO N., KIKUCHI K., SUZUKI S., ACHIBA Y., TANIGAKI K., KOSAKA M.
    The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 324 - 324, Japanese

  • NMR studies in Carbon Nanotubes
    HAYASHI M., KUMAZAWA Y., TOU H., KATAURA H., MANIWA Y., AGOU H., ONO Y., YAMABE T., TANAKA K.
    The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 286 - 286, Japanese

  • NMR studies in Carbon Nanotubes
    HAYASHI M., KUMAZAWA Y., TOU H., MANIWA Y., AGOU H., ONO Y., YAMABE T., TANAKA K.
    The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 249 - 249, Japanese

  • NMR in Ammonia-A_3C_<60> III
    MUROGA N., SATO N., SUGIURA D., TOU H., MANIWA Y., SHIMODA H., IWASA Y., MITANI T.
    The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 237 - 237, Japanese

  • NMR Studies of (NH_3)K_3C_<60>
    TOU H., MANIWA Y., SHIMODA H., IWASA Y., MITANI T.
    The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 236 - 236, Japanese

  • NMR Study in UNi_2Al_3 II
    KAMATSUKA T., ISHIDA K., KITAOKA Y., ASAYAMA K., TOU H., TATEIWA N., SATO N., KOMATSUBARA T., GEIBEL C., STEGLICH F.
    The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 463 - 463, Japanese

  • MANIWA Y, MUROGA N, SATO N, TOU H, SHIMODA H, KIKUCHI K, KOSAKA M, CHEN X, LABES M M
    1998, Physical Review B, 58(17) (17), 11603 - 11606

  • 重い電子系異方的超伝導体のNMR-パリティとナイトシフト(強相関伝導系の物理 若手秋の学校,講義ノート)
    藤 秀樹
    物性研究刊行会, 1998, 物性研究, 70(2) (2), 146 - 160, Japanese

  • 7a-YF-7 NMR Study in UNi_2Al_3
    Kamatsuka T., Tou H., Ishida K., Kitaoka Y., Asayama K., Geibel C., Steglich F.
    The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 517 - 517, Japanese

  • 6a-D-13 NMR Studies of A_3Ba_3C_<60>(A=K, Rb)
    Tou H., Maniwa Y., Taga S., Iwasa Y., Mitani T.
    The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 281 - 281, Japanese

  • 6p-D-10 NMR in Ammonia-A_3C_<60> II
    Muroga N., Sato N., Sugiura D., tou H., Maniwa Y., Shimoda H., Iwasa Y., Mitani T.
    The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 287 - 287, Japanese

  • 6p-D-7 NMR in K_3C_<60>
    Sato N., Muroga N., Sugiura D., Tou H., Maniwa Y., Kikuchi K., Suzuki S., Achiba Y., Kosaka M., Tanigaki K.
    The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 286 - 286, Japanese

  • 6p-D-9 Magnetic susceptibility and NMR of A_3C_<60>
    Maniwa Y., Muroga N., Sato N., Sugiura D., Hayashi M., Tou H., Shimoda H., Iwasa Y., Mitani T., Chen X., Glenis S., Lin C.L., Labes M.M.
    The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 286 - 286, Japanese

  • 28P-N-3 NMR Study of Anisotropic Heavy-Fermion Superconductors
    Tou H., Kitaoka Y., Asayama K.
    The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52(1) (1), 522 - 522, Japanese

  • 30p-P-4 NMR Study of UPt_3
    Tou H., Kitaoka Y., Asayama K., Kimura N., Onuki Y., Haga Y., Yamamoto E., Maezawa K.
    The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52(1) (1), 492 - 492, Japanese

  • スピン三重項超伝導体UPt_3のNMRによる研究(スピン三重項超伝導をめぐって)
    藤 秀樹, 北岡 良雄, 石田 憲二, 朝山 邦輔, 木村 憲彰, 大貫 惇睦, 芳賀 芳範, 山本 悦嗣, 前沢 邦彦
    物性研究刊行会, 1997, 物性研究, 68(6) (6), 760 - 763, Japanese

  • NMR Study of UPt_3
    Tou H., Kitaoka Y., Asayama K., Kimura N., Onuki Y., Yamamoto E., Maezawa K.
    The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996(3) (3), 51 - 51, Japanese

  • NQR Study of UPd_2Ga_3
    Kamatsuka T., Tou H., Kitaoka Y., Asayama K., Sullow S., Mydosh J.A.
    The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996(3) (3), 54 - 54, Japanese

  • Y Kitaoka, K Ishida, GQ Zheng, H Tou, K Magishi, S Matsumoto, K Yamazoe, H Yamanaka, K Asayama
    Dec. 1995, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 56(12) (12), 1931 - 1935, English

  • Magnetism and superconductivity of U-compounds II(NMR/MQR-studies)
    Tou H., Kitaoka K., Asayama K., Kimura N., Onuki Y., Geibel C., Schank C., Steglich F.
    The Physical Society of Japan (JPS), 12 Sep. 1995, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1995(3) (3), 83 - 83, Japanese

  • Magnetism and superconductivity of U-compounds(NMR/NQR-studies)
    Tou H., Kitaoka K., Asayama K., Kyogaku M., Onuki Y., Geibel C., Schank C., Steglich F.
    The Physical Society of Japan (JPS), 16 Mar. 1995, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 50(3) (3), 5 - 5, Japanese

  • 3p-Z-20 Magnetism and superconductivity of UM_2Al_3 (M=Pd, Ni) II
    Tou H, Kitaoka K, Asayama K, Kyogaku M, Geibel C, Schank C, Steglich F
    The Physical Society of Japan (JPS), 16 Aug. 1994, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1994(3) (3), 80 - 80, Japanese

  • 28a-YN-5 Magnetism and superconductivity of MPd_2Al_3(M=U, Ce)
    Tou H, Kitaoka k, Asayama K, Kyogaku M, Mentink S.A.M., Nieuwenhuys G.J., Menovsky A.A., Mydosh J.A., Geibel C, Schank C, Steglich F
    The Physical Society of Japan (JPS), 16 Mar. 1994, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 49(3) (3), 3 - 3, Japanese

  • 12a-R-3 ^27Al-NMR study in CePd_2Al_3
    Tou H., Kitaoka K., Asayama K., Mentink S.A.M.
    The Physical Society of Japan (JPS), 20 Sep. 1993, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1993(3) (3), 2 - 2, Japanese

  • 30p-PSB-47 ^<63>Cu Nuclear Spin-Lattice Relaxation Study for Low-temperature Structural Transition in (La_<1-x>Ba_x)_2CuO_4 around x=0.06
    Tou H., Matsumura M., Yamagata H.
    The Physical Society of Japan (JPS), 16 Mar. 1993, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 48(3) (3), 340 - 340, Japanese

  • 27p-L-7 Anomalous Cu-NQR Spectral Change due to low-Temperature Structural Transition
    TOU Hideki, MATSUURA Masahiro, YAMAGATA Hideki
    The Physical Society of Japan (JPS), 14 Sep. 1992, 秋の分科会講演予稿集, 1992(3) (3), 195 - 195, Japanese

  • 30a-ZE-4 Anomalous Cu-NQR Spectral Change due to Low-Temperature Structural Transition around X〜0.06 in (La_<1-x>Ba_x)_2CuO_4
    Tou H, Matsumura M, Yamagata H
    The Physical Society of Japan (JPS), 12 Mar. 1992, 年会講演予稿集, 47(3) (3), 164 - 164, Japanese

■ Lectures, oral presentations, etc.
  • 硫化銅鉱物テトラヘドライトのZn置換効果に関するNMRによる研究
    松井 隆志, 松野 治貴, KOTEGAWA Hisashi, TOU Hideki, 末國 晃一郎, 長谷川 巧, 田中 博己, 高畠 敏郎
    日本物理学会第74回年次大会, Mar. 2019, Japanese, 日本物理学会, 九州大学, Domestic conference
    Oral presentation

  • 遍歴強磁性体U3Pt4の単結晶作成と圧力効果
    野間 雄一朗, KOTEGAWA Hisashi, TOU Hideki, 仲村 愛, 本間, 佳哉, 本多, 史憲, 青木 大
    日本物理学会第74回年次大会, Mar. 2019, Japanese, 日本物理学会, 九州大学, Domestic conference
    Poster presentation

  • 非共型構造を有するNbCrPの非磁性相転移の研究
    桑田 祥希, KOTEGAWA Hisashi, 武田 圭生, TOU Hideki, MATSUOKA Eiichi, SUGAWARA Hitoshi, OTA Hitoshi, SAKURAI Takahiro, HARIMA Hisatomo
    日本物理学会第74回年次大会, Mar. 2019, Japanese, 日本物理学会, 九州大学, Domestic conference
    Oral presentation

  • 非共型構造を有するNbCrPの非磁性相転移の研究
    桑田祥希, 小手川 恒, 武田圭生, 藤 秀樹, 松岡 英一, 菅原 仁, 太田仁, 櫻井敬博, 播磨 尚朝
    日本物理学会第74回年次大会(2019年), Mar. 2019, Japanese, 九州大学, Domestic conference
    Oral presentation

  • 単結晶UNi4BのNMRを用いた磁気秩序状態の研究
    竹内 涼介, 岸本 恭来, KOTEGAWA Hisashi, HARIMA Naotomo, TOU Hideki, 本間 佳哉, 本多 史憲, 仲村 愛, 清水 悠晴, 李 徳新, 青木 大
    日本物理学会第74回年次大会, Mar. 2019, Japanese, 日本物理学会, 九州大学, Domestic conference
    Poster presentation

  • 重い電子系超伝導体UPt3の高温領域におけるNMRによる研究
    青山 泰介, KOTEGAWA Hisashi, TOU Hideki, 木村 憲彰, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会第74回年次大会, Mar. 2019, Japanese, 日本物理学会, 九州大学, Domestic conference
    Poster presentation

  • UBe13における特異な超伝導相図とスピン三重項超伝導
    TOU Hideki
    日本物理学会第74回年次大会, Mar. 2019, Japanese, 日本物理学会, 九州大学, Domestic conference
    Public discourse

  • PrT2Al20 (T=Nb, Ta)のNMR緩和率の磁場依存性の結晶場モデルに基づく解析
    久保 徹郎, TOU Hideki, KOTEGAWA Hisashi, HARIMA Naotomo, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行, 井原 慶彦, 後藤 貴行, 佐々木 孝彦
    日本物理学会第74回年次大会, Mar. 2019, Japanese, 日本物理学会, 九州大学, Domestic conference
    Poster presentation

  • 75As-NQR research of the fluctuation related to the metal-insulator transition on Ru1-xRhxAs
    桑田 祥希, TOU Hideki, KOTEGAWA Hisashi
    J-Physics: Tropical Topical Meeting, Dec. 2018, Japanese, Domestic conference
    Poster presentation

  • Pr-, U-化合物の強磁場NMRによる研究
    TOU Hideki
    東北大金研強磁場コラボラトリ研究会「強磁場コラボラトリにおける物性研究の現状と展望」, Nov. 2018, Japanese, 仙台市, Domestic conference
    [Invited]
    Nominated symposium

  • 反強磁性体Mn3Pの圧力誘起量子臨界点の研究
    小手川 恒, 宇田幸平, 桑田祥希, 藤 秀樹, 菅原 仁, 播磨 尚朝, 荒木新吾, 小林達生, 武田圭生, 櫻井敬博, 太田仁
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 同志社大学, Domestic conference
    Oral presentation

  • 単結晶UNi4Bの11B-NMRを用いた構造解析と磁気秩序状態の研究
    竹内 涼介, 岸本 恭来, KOTEGAWA Hisashi, HARIMA Naotomo, TOU Hideki, 本間 佳哉, 本多 史憲, 仲村 愛, 清水 悠晴, 李 徳新, 青木 大
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 日本物理学会, 同志社大学, Domestic conference
    Poster presentation

  • 磁場に鈍感な重い電子化合物SmTa2Al20の単結晶NQR/NMRによる基底状態の研究
    TOU Hideki, 中瀬 迅, KOTEGAWA Hisashi, 久保 徹郎, 東中 隆二, 山田 瑛, 松田 達磨, 青木 勇二
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 日本物理学会, 同志社大学, Domestic conference
    Oral presentation

  • 強磁性超伝導体UGe2の73Ge-NQRによる研究
    野間 雄一朗, 久保 徹郎, KOTEGAWA Hisashi, TOU Hideki, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦, 伊藤 公平, E. E. Haller, 仲村 愛, 本間 佳哉, 本多 史憲, 青木 大
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 日本物理学会, 同志社大学, Domestic conference
    Poster presentation

  • 圧力誘起超伝導体CrAsのdHvA効果測定
    兼吉潤, 吉永岳朗, 松岡 英一, 小手川 恒, 藤 秀樹, 廣瀬陽代, 寺嶋太一, 宇治進也, 菅原 仁
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 同志社大学, Domestic conference
    Oral presentation

  • RuAsの異方的金属絶縁体転移の光学的観測
    中島裕喜, 三田善志郎, 日比滋元, 亀井俊, 渡邊浩, 小手川 恒, 菅原 仁, 藤 秀樹, 伊藤孝寛, 木村真一
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 同志社大学, Domestic conference
    Poster presentation

  • RuAsのRh置換効果に対するNQRによる検証と類似ジグザグ構造を持つ物質の物性
    桑田祥希, 小手川 恒, 武田圭生, 藤 秀樹, 松岡 英一, 菅原 仁, 太田仁, 櫻井敬博, 播磨 尚朝
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 同志社大学, Domestic conference
    Oral presentation

  • 195Pt-NMRから見たスピン三重項超伝導体UPt3の超伝導スピン軌道相互作用
    青山 泰介, KOTEGAWA Hisashi, TOU Hideki, 木村 憲彰, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会2018年秋季大会, Sep. 2018, Japanese, 日本物理学会, 同志社大学, Domestic conference
    Oral presentation

  • NMR evidence for anomalous magnetic ground state in field-insensitive heavy fermion system SmTa2Al20
    TOU Hideki
    J-Physics 2018: International Workshop on New Materials and Crystal Growth, Jun. 2018, English, Awaji, Hyogo, International conference
    Poster presentation

  • 単結晶UNi4BのNMRによる構造解析
    TOU Hideki
    J-Physics：多極子伝導系の物理 平成30年度領域全体会議, May 2018, Japanese, 仙台市・東北大学片平さくらホール, Domestic conference
    Poster presentation

  • 重い電子系超伝導体UPt3の超伝導C相に対するNMRによる研究(23pK504-11)
    青山 泰介, 小手川 恒, 藤 秀樹, 木村 憲彰, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • 強磁性体CeRh6Ge4の圧力誘起量子臨界点の探索（22aK504-11）
    宇賀 俊士, 小手川 恒, 築地 孝和, 菅原 仁, 松岡 英一, 藤 秀樹
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • 強磁性体CeRh6Ge4の圧力誘起量子臨界点の探索
    宇賀 俊士, 小手川 恒, 築地 孝和, 菅原 仁, 松岡 英一, 藤 秀樹
    日本物理学会第73回年次大会, Mar. 2018, Japanese, 東京理科大, Domestic conference
    Oral presentation

  • 圧力誘起超伝導体CrAsとCrAs1-xPx(x=6%)のNMRによる研究(22aPS-15)4
    松島 恵, 中原 真悟, 小手川 恒, 松岡 英一, 菅原 仁, 櫻井 敬博, 太田 仁, 播磨 尚朝, 藤 秀樹
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • 圧力誘起超伝導体CrAsとCrAs1-xPx(x=6%)のNMRによる研究
    松島 恵, 中原 真悟, 小手川 恒, 藤 秀樹, 松岡 英一, 菅原 仁, 櫻井 敬博, 太田 仁, 播磨 尚朝
    日本物理学会第73回年次大会, Mar. 2018, Japanese, 東京理科大, Domestic conference
    Poster presentation

  • テトラヘドライトCu12Sb4S13におけるラットリングと金属 半導体転移に関するNMRによる研究（22aK503-2）
    松井 隆志, 松野 治貴, 小手川 恒, 藤 秀樹, 田中 博己, 末國 晃一郎, 高畠 敏郎
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • RuAs及び類似ジグザグ構造を持つ物質の基底状態(22aPS-17)
    桑田 祥希, 小手川 恒, 武田 圭生, 藤 秀樹, 松岡 英一, 菅原 仁, 太田 仁, 櫻井 敬博, 播磨 尚朝
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • RuAs及び類似ジグザグ構造を持つ物質の基底状態
    桑田 祥希, 小手川 恒, 武田 圭生, 藤 秀樹, 松岡 英一, 菅原 仁, 櫻井 敬博, 太田 仁, 播磨 尚朝
    日本物理学会第73回年次大会, Mar. 2018, Japanese, 東京理科大, Domestic conference
    Poster presentation

  • RT2Al20 (R=La, Pr; T=Nb, Ta)のNMR/NQRスペクトル解析(23aPS-96)
    久保 徹郎, 藤 秀樹, 三宅 遼磨, 松野 治貴, 小手川 恒, 播磨 尚朝, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行, 井原 慶彦, 後藤 貴行, 佐々木 孝彦
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • CexLa1-xB6：圧力誘起多極子秩序相(24pK504-7)
    世良 正文, 国森 啓介, 松村 武, 谷田 博司, 藤 秀樹, 伊賀 文俊, 近藤 晃弘, 上床 美也, 小林 達生
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • 73Ge-NQR測定による強磁性超伝導体UGe2の磁気ゆらぎの研究(23pK504-12)
    野間 雄一朗, 久保 徹郎, 小手川 恒, 播磨 尚朝, 藤 秀樹, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦, 伊藤 公平, HALLER E. E, 仲村 愛, 本間 佳哉, 本多 史憲, 青木 大
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • 31P-NMRからみたYbNi4P2の磁気的物性(23aPS-72)
    岸本 恭来, 安岡 弘志, 久保 徹郎, 小手川 恒, 藤 秀樹, KULIEMT Kristin, KRELLNER Cornelius, GEIBEL Christoph, BAENIT Michael
    日本物理学会第７３回年次大会, Mar. 2018, Japanese, 日本物理学会, 東京理科大学, Domestic conference
    Oral presentation

  • 偏光赤外分光法によるRuAsの異方的金属絶縁体転移の観測 日本物理学会2017年秋季大会 2017年9月21日(木)〜
    中島 裕喜, 三田 善志郎, 日比 滋元, 亀井 俊, 渡邊 浩, 小手川 恒, 菅原 仁, 藤 秀樹, 木村 真一
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • 偏光赤外分光法によるRuAsの異方的金属絶縁体転移の観測
    中島 裕喜, 三田 善志郎, 日比 滋元, 亀井 俊, 渡邊 浩, 小手川 恒, 菅原仁, 藤 秀樹, 木村 真一
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 岩手大学, Domestic conference
    Poster presentation

  • NQR
    桑田 祥希, 小手川 恒, 武田 圭生, 藤 秀樹, 松岡 英一, 菅原 仁, 櫻井 敬博, 太田 仁, 播磨 尚朝
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 岩手大学, Domestic conference
    Poster presentation

  • 重い電子系超伝導体UPt3の反強磁性ゆらぎの異方性に関するNMRによる研究
    青山 泰介, 小手川 恒, 藤 秀樹, 木村 憲彰, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • 強磁性量子臨界物質YbNi4P2における31P-NMR
    岸本 恭来, 安岡 弘志, 久保 徹郎, 小手川 恒, 藤 秀樹, KLIEMT K, KRELLNER C, GEIBEL C, BAENITZ M
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • 強磁性超伝導体UGe2の圧力下73Ge-NQR測定
    野間 雄一朗, 久保 徹郎, 小手川 恒, 藤 秀樹, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦, 伊藤 公平, HALLER E.E, 仲村 愛, 本間 佳哉, 本多 史憲, 青木 大
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • 強磁性相を持つCeZnの温度 圧力 磁場相図の作成
    宇賀 俊士, 小手川 恒, 菅原 仁, 松岡 英一, 藤 秀樹
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • 圧力誘起超伝導体CrAsのNMRによる研究 日本物理学会2017年秋季大会 2017年9月
    松島 恵, 中原 真悟, 小手川 恒, 藤 秀樹, 松岡 英一, 菅原 仁, 櫻井 敬博, 太田 仁, 播磨尚朝
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • 圧力誘起超伝導体CrAsのNMRによる研究
    松島 恵, 中原 真悟, 小手川 恒, 藤 秀樹, 松岡 英一, 菅原 仁, 櫻井 敬博, 太田 仁, 播磨 尚朝
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 岩手大学, Domestic conference
    Oral presentation

  • テトラヘドライトCu12Sb4S13におけるCu-ラットリングに関するNMRによる研究
    松井 隆志, 松野 治貴, 小手川 恒, 藤 秀樹, 田中 博己, 末國 晃一郎, 高畠 敏郎
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • U1-xThxBe13のNMRによる研究
    松野 治貴, 山崎 翔太, 森田 恭平, 小手川 恒, 藤 秀樹, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦, 清水 悠晴, 仲村 愛, 本間 佳哉, 李 徳新, 本多 史憲, 青木 大
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • SmTa2Al20単結晶試料のNQR/NMRによる低温のダイナミクス
    中瀬 迅, 三宅 遼磨, 久保 徹郎, 河瀬 良亮, 小手川 恒, 藤 秀樹, 東中 隆二, 山田 瑛, 松田 達磨, 青木 勇二
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • Cu-NMR studies of heavy fermion CeCu6
    TOU Hideki
    J-Physics 2017 International Workshop on Multipole Physics and Related Phenomena, Sep. 2017, English, J-Physics, 岩手, International conference
    Poster presentation

  • CeCu2Si2の高圧・強磁場領域のCu-NMR
    藤原 賢二, 高松 祐弥, 本山 岳, 三好 清貴, 小林 達生, 北川 健太郎, 佐々木 孝彦, 後藤 貴行, 小手川 恒, 藤 秀樹, SEIRO S, GEIBEL C, STEGLICH F
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • CaBe2Ge2型超伝導体LaPd2Al2の構造相転移に関するNMRによる研究
    青山 泰介, 小林 史明, 小手川 恒, 藤 秀樹, DOLEZAL Petr, KRIEGNER Dominik, JAVORSKY Pavel, UHLIROVA Klara
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • Anomalous normal and superconducting properties in UBe13 probed by 9Be-NMR
    TOU Hideki
    Satellite workshop of J-Physics 2017: Physics of Uranium based Unconventional Superconductors, Sep. 2017, English, International conference
    [Invited]
    Invited oral presentation

  • 93Nb-NMR測定によるPrNb2Al20の強磁場磁化の見積もり
    久保 徹郎, 藤 秀樹, 松野 治貴, 小手川 恒, 播磨 尚朝, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行, 井原 慶彦, 後藤 貴行, 佐々木 孝
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • 11B- NMRからみたU系化合物UNi4Bの磁気異方性
    岸本 恭来, 小林 史明, 小手川 恒, 藤 秀樹, 齋藤 開, 網塚 浩, 本間 佳哉仲村愛, 李徳新, 本多史憲, 青木大
    日本物理学会2017年秋季大会, Sep. 2017, Japanese, 日本物理学会, 岩手大学, Domestic conference
    Oral presentation

  • Comparative Ga-NMR studies on type I and type VIII metallic clathrates
    TOU Hideki
    IUMRS-ICAM2017, The 15th International conference on Advanced Materials, Aug. 2017, English, IUMRS-ICAM, Kyoto University, International conference
    Oral presentation

  • Unconventional Superconductivity of CrAs in the Vicinity of Masked Quantum Critical Point
    KOTEGAWA Hisashi, MATSUSHIMA Kei, NAKAHARA Shingo, TOU Hideki, KANEYOSHI Jun, MATSUOKA Eiichi
    International Conference on Strongly correlated electron systems 2017, Jul. 2017, English, Czech Republic, International conference
    Oral presentation

  • Quasilinear quantum magnetoresistance in pressure-induced nonsymmorphic superconductor CrAs
    NIU Qun, YU Wing Chi, YAU KingYIP, LIM Zi Li, KOTEGAWA Hisashi, MATSUOKA Eiichi, SUGAWARA Hitoshi, TOU Hideki, YANASE Youichi, GOH K. Swee
    International Conference on Strongly correlated electron systems 2022, Jul. 2017, English, Czech Republic, International conference
    Poster presentation

  • NMR study on anomalous superconducting phase diagram in UBe13
    MATSUNO Haruki, MORITA Kyohei, KOTEGAWA Hisashi, TOU Hideki, HAGA Yoshinori, YAMAMOTO Etsuji, ONUKI Yoshichika
    International Conference on Strongly correlated electron systems 2021, Jul. 2017, English, Czech Republic, International conference
    Poster presentation

  • NMR studies on antiferromagnetic fluctuation in UPt3
    AOYAMA Taisuke, KOTEGAWA Hisashi, TOU Hideki, KIMURA Noriaki, HAGA Yoshinori, YAMAMOTO Etsuji, ONUKI Yoshichika
    International Conference on Strongly correlated electron systems 2019, Jul. 2017, English, Czech Republic, International conference
    Poster presentation

  • NMR studies of structural phase transition and superconductivity in LaPd2Al2
    TOU Hideki, AOYAMA Taisuke, KOBAYASHI Fumiaki, KOTEGAWA Hisashi, PETR Dolezal, KRIEGNER Dominik, JAVORSKY Pavel, UHLIROVA
    International Conference on Strongly correlated electron systems 2017, Jul. 2017, English, Czech Republic, International conference
    Poster presentation

  • NMR investigation for a magnetoelectric effect in uranium compound UNi4B
    KISHIMOTO Yasuki, MATSUNO Haruki, KOTEGAWA Hisashi, TOU Hideki, SAITOU Hiraku, AMITSUKA Hiroshi, HOMMA Yoshiya, NAKAMURA Ai, LI Dexin, HONDA Fuminori, AOKI Dai
    International Conference on Strongly correlated electron systems 2020, Jul. 2017, English, Czech Republic, International conference
    Poster presentation

  • Anomalous superconducting phase diagram in heavy fermion superconductor UBe13 studied by surface impedance measurements
    TOU Hideki
    Actinides 2017, Jul. 2017, English, Actinides, Ｍｉｙａｇｉ, International conference
    Oral presentation

  • 73Ge-NQR studies under pressure on magnetic fluctuations of ferromagnetic superconductor UGe2
    NOMA Yuichiro, KUBO Tetsuro, KOTEGAWA Hisashi, TOU Hideki, HAGA Yoshinori, YAMAMOTO Etsuji, ONUKI Yoshichika, ITOH M.Kohei, HALLER E.Eugene, NAKAMURA Ai, HOMMA Yoshiya, HONDA Fuminori, AOKI Dai
    International Conference on Strongly correlated electron systems 2018, Jul. 2017, English, Czech Republic, International conference
    Poster presentation

  • 重い電子超伝導体 UBe13 の 9Be-NMR による研究
    松野 治貴, 森田 恭平, 小手川 恒, 藤 秀樹, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会 第 72 回年次 大会, Mar. 2017, Japanese, 日本物理学会, 大阪大学, Domestic conference
    Oral presentation

  • 強磁性超伝導体 UGe2の圧力下 73Ge-NQR による磁気ゆらぎ の研究
    野間 雄一朗, 久保 徹郎, 小手川 恒, 藤 秀樹, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦, 伊藤 公平, E. E. Haller, 仲村 愛, 本間 佳哉, 本多 史憲, 青木 大
    日本物理学会 第 72 回年次 大会, Mar. 2017, Japanese, 日本物理学会, 大阪大学, Domestic conference
    Poster presentation

  • 圧力誘起超伝導体CrAsのNMRによる磁気異方性の研究
    松島 恵, 中原 真悟, 小手川 恒, 藤 秀樹, 菅原 仁, 松岡 英一, 播磨 尚朝
    日本物理学会第72回年次大会, Mar. 2017, Japanese, 大阪大学, Domestic conference
    Oral presentation

  • ワイル半金属TaPの181Ta-NQRによる研究
    久保徹郎, 安岡弘志, 岸本恭来, Deepa Kasinathan, Marcus Schmidt, 藤秀樹, Michael Baenitz
    日本物理学会 第 72 回年次 大会, Mar. 2017, Japanese, 日本物理学会, 大阪大学, Domestic conference
    Oral presentation

  • テトラヘドライト Cu12Sb4S13における金属 半導体転移に関する NMR による研究 III
    松井 隆志, 松野 治貴, 小手川 恒, 藤 秀樹, 田中 博己, 末國 晃一郎, 高畠 敏郎
    日本物理学会 第 72 回年次 大会, Mar. 2017, Japanese, 日本物理学会, 大阪大学, Domestic conference
    Oral presentation

  • YbNi4P2の31P-NMRによる研究
    岸本恭来, 安岡弘志, K. Kliemt, C. Krellner, 藤秀樹, C. Geibel, M. Baenitz
    日本物理学会 第 72 回年次 大会, Mar. 2017, Japanese, 日本物理学会, 大阪大学, Domestic conference
    Oral presentation

  • U化合物超伝導体の核磁気共鳴
    藤秀樹
    研究会「核磁気共鳴を主とした物性研究の新展開」, Mar. 2017, Japanese, 大阪大学基礎工学部, 大阪大学, Domestic conference
    Nominated symposium

  • UPt3の反強磁性秩序（ゆ らぎ）に対する NMR による研究
    青山 泰介, 小手川 恒, 藤 秀樹, 木村 憲彰, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会 第 72 回年次 大会, Mar. 2017, Japanese, 日本物理学会, 大阪大学, Domestic conference
    Oral presentation

  • NMR/NQR による Pr T 2Al20 ( T =Nb; Ta) の磁気揺らぎの 研究
    久保 徹郎, 藤秀樹, 三宅 遼磨, 松野 治貴, 小手川 恒, 播磨 尚, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行, 井原 慶彦, 後藤 貴行, 佐々木 孝彦
    日本物理学会 第 72 回年次 大会, Mar. 2017, Japanese, 日本物理学会, 大阪大学, Domestic conference
    Poster presentation

  • CeZnにおける圧力下強磁性量子臨界点の探索
    宇賀 俊士, 小手川 恒, 菅原 仁, 松岡 英一, 藤 秀樹
    日本物理学会第72回年次大会, Mar. 2017, Japanese, 大阪大学, Domestic conference
    Oral presentation

  • Possible spin-triplet superconductivity in UBe13 from angle-dependent 9Be Knight shift
    Hideki Tou
    Seminar in MPI-CPfS, Oct. 2016, English, MPI-CPfS, Dresden, Germanny, Germanny, International conference
    [Invited]
    Invited oral presentation

  • 反強磁性体Cr2GaNの置換効果とNMR測定
    南太 美雄, 小手川 恒, 藤 秀樹, 松岡 英一, 菅原 仁
    日本物理学会2016年秋季大会, Sep. 2016, Japanese, 金沢大学, Domestic conference
    Poster presentation

  • 単結晶PrT2Al20 (T = Nb; Ta) のNMRによる研究
    久保徹郎, 三宅遼磨, 松野治貴, 小手川恒, 藤秀樹, 播磨尚朝, 東中隆二, 中間章浩, 青木勇二, 佐藤英行, 井原慶彦, 後藤貴行, 佐々木孝彦
    日本物理学会 2016年秋季大会, Sep. 2016, Japanese, 日本物理学会, 金沢大学, Domestic conference
    Poster presentation

  • 重い電子超伝導体UBe13におけるNMRによる研究
    松野治貴, 森田恭平, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦
    日本物理学会 2016年秋季大会, Sep. 2016, Japanese, 日本物理学会, 金沢大学, Domestic conference
    Poster presentation

  • 金属 絶縁体転移を示すRuAsの単結晶NQR測定
    小手川 恒, 藤 秀樹, 菅原 仁
    日本物理学会2016年秋季大会, Sep. 2016, Japanese, 金沢大学, Domestic conference
    Poster presentation

  • 強相関電子系ウラン化合物の基礎物性とNMRによる研究
    東北大学金属材料研究所付属量子エネルギー材料科学国際研究センター平成28年度大洗研究会, Sep. 2016, Japanese, 東北大学金属材料研究所, 東北大学, Domestic conference
    Nominated symposium

  • 強磁性超伝導体UGe2の圧力下73Ge-NQRによる磁気ゆらぎの研究
    野間雄一朗, 久保徹郎, 小手川恒, 藤秀樹, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, E. E. Haller, 仲村愛, 本間佳哉, 本多史憲, 青木大
    日本物理学会 2016年秋季大会, Sep. 2016, Japanese, 日本物理学会, 金沢大学, Domestic conference
    Oral presentation

  • 圧力誘起超伝導体CrAsのNMRによる研究
    松島 恵, 中原 真悟, 小手川 恒, 藤 秀樹, 菅原 仁, 松岡 英一, 播磨 尚朝
    日本物理学会2016年秋季大会, Sep. 2016, Japanese, 金沢大学, Domestic conference
    Poster presentation

  • UPt3の反強磁性秩序(ゆらぎ)に対する高磁場下NMRによる研究
    青山泰介, 小手川恒, 藤秀樹, 木村憲彰, 芳賀芳範, 山本悦嗣, 大貫惇睦
    日本物理学会 2016年秋季大会, Sep. 2016, Japanese, 日本物理学会, 金沢大学, Domestic conference
    Poster presentation

  • UNi4Bの電流磁気効果のNMRによる検証
    岸本恭来, 小手川恒, 藤秀樹, 齋藤開, 網塚浩, 本間佳哉, 仲村愛, 李徳新, 本多史憲, 青木大
    日本物理学会 2016年秋季大会, Sep. 2016, Japanese, 日本物理学会, 金沢大学, Domestic conference
    Poster presentation

  • SmTa2Al20のAl-NQRによる研究
    中瀬迅, 三宅遼磨, 久保徹郎, 小手川恒, 藤秀樹, 山田瑛, 東中隆二, 松田達磨, 青木勇二
    日本物理学会 2016年秋季大会, Sep. 2016, Japanese, 日本物理学会, 金沢大学, Domestic conference
    Poster presentation

  • LaV2Al20のdHvA効果
    久保 智也, Pham.D.C. Nhan, 松岡 英一, 小手川 恒, 藤 秀樹, 播磨 尚朝, 菅原 仁
    日本物理学会2016年秋季大会, Sep. 2016, Japanese, 金沢大学, Domestic conference
    Oral presentation

  • CeZnにおける圧力下強磁性量子臨界点の探索
    宇賀 俊士, 小手川 恒, 菅原 仁, 松岡 英一, 藤 秀樹
    日本物理学会2016年秋季大会, Sep. 2016, Japanese, 金沢大学, Domestic conference
    Poster presentation

  • CePd2GaのNMR/NQRによる研究
    岸本 恭来, 小手川 恒, 松岡 英一, 菅原 仁, 藤 秀樹
    日本物理学会2016年秋季大会, Sep. 2016, Japanese, 金沢大学, Domestic conference
    Oral presentation

  • Single Crystal NMR Studies of Pr T 2Al20 Systems ( T = Nb, Ta)
    T. Kubo, R. Miyake, H. Kotegawa, H. Tou, H. Harima, R. Higashinaka, A. Nakama, Y. Aoki, H. Sato, Y. Ihara, T. Goto, T. Sasaki
    International Conference on Strongly Correlated Electron Systems, Aug. 2016, English, SCES, China, International conference
    Poster presentation

  • Sb-NMR/NQR studies of heavy fermion system YbRhSb
    Y. Kishimoto, H. Tou, Y. Awai, H. Kotegawa, Y. Muro, K. Nakamura, M. Sera, T. Takabatake
    International Conference on Strongly Correlated Electron Systems, Aug. 2016, English, SCES, China, International conference
    Poster presentation

  • NMR studies of coexistence of superconductivity and CDW in LaPt2Si2
    T. Aoyama, T. Kubo, H. Matsuno, H. Kotegawa, H. Tou, A. Mitsuda, Y. Nagano, N. Araoka, Y. Wada, Y. Yamada
    International Conference on Strongly Correlated Electron Systems, Aug. 2016, English, SCES, China, International conference
    Poster presentation

  • Ce-based Antiferromagnetic Compound CePd2Ga Probed by Ga-NMR
    Y. Kishimoto, H. Kotegawa, H. Tou, E. Matsuoka, H. Sugawara
    International Conference on Strongly Correlated Electron Systems, Aug. 2016, English, SCES, China, International conference
    Poster presentation

  • 9Be-NMR studies on anomalous superconducting phase diagram in UBe13
    Haruki Matsuno, Kyohei Morita, Hisashi Kotegawa, Hideki Tou, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki
    International Conference on Strongly Correlated Electron Systems, Aug. 2016, English, SCES, China, International conference
    Poster presentation

  • 極低温下での核磁気共鳴による重い電子超伝導体の基底状態の研究
    藤秀樹
    低温工学・超電導学会 関西支部 2016年度総会, May 2016, Japanese, 低温工学・超電導学会 関西支部, KobeUniversity, Domestic conference
    Invited oral presentation

  • PrT2Al20における低エネルギー励起に関するNMRによる研究
    藤秀樹
    J-Physics：多極子伝導系の物理 平成28年度領域全体会議, May 2016, Japanese, J-Phyics, 北海道大学, Domestic conference
    Poster presentation

  • Low energy excitations of Pr and U based f2 systems probed by NMR
    H. Tou
    Mini International Workshop: Physics of Strongly Correlated Electron Systems under Extreme Conditions 2016, Apr. 2016, English, Kobe University, Hyogo, International conference
    Nominated symposium

  • 超伝導とCDWが共存するLaPt2Si2のNMRによる研究
    青山泰介, 久保徹郎, 松野治貴, KOTEGAWA HISASHI, TOU HIDEKI, 光田暁弘, 永野雄太郎, 荒岡信隆, 和田裕文, 山田裕
    日本物理学会第71回年次大会(2016), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    Poster presentation

  • 強磁性超伝導体UGe2の73Ge-NQR/NMRによる磁気ゆらぎの研究
    野間雄一朗, 久保徹郎, KOTEGAWA HISASHI, TOU HIDEKI, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, E.E.Haller, 仲村愛, 本間佳哉, 本多史憲, 青木大
    日本物理学会第71回年次大会(2016), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    Poster presentation

  • 希土類化合物YbRhSbにおける単結晶NQRと電気磁気効果の検証
    岸本恭来, 粟井佳樹, 松野治貴, KOTEGAWA HISASHI, TOU HIDEKI, 室裕司, 高畠敏郎
    日本物理学会第71回年次大会(2020), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    Poster presentation

  • テトラヘドライトCu12Sb4S13における金属 半導体転移に関するNMRによる研究II
    松井隆志, 松野治貴, KOTEGAWA HISASHI, TOU HIDEKI, 田中博己, 末國晃一郎, 高畠敏郎
    日本物理学会第71回年次大会(2017), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    [Invited]
    Invited oral presentation

  • UCoAlの圧力下のメタ磁性転移に対するNMRによる研究
    KOTEGAWA HISASHI, 福本健太, 明比亮介, TOU HIDEKI, 松田達磨, 山本悦嗣, 芳賀芳範, Zachary Fisk, 大貫惇睦, 青木大, Jacques Flouquet
    日本物理学会第71回年次大会(2016), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    Poster presentation

  • NMRから見たｆ電子系の結晶場と準粒子状態
    久保徹郎, 三宅遼磨, 松野治貴, KOTEGAWA HISASHI, TOU HIDEKI, HARIMA HISATOMO, 東中隆二, 中間章浩, 青木勇二, 佐藤英行, 井原慶彦, 後藤貴行, 佐々木孝彦
    日本物理学会第71回年次大会(2016), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    Poster presentation

  • NMR/NQRからみるCu10Zn2Sb4S13におけるラットリングの周波数依存性
    松野治貴, 松井隆志, 岸本恭来, 久保徹郎, KOTEGAWA HISASHI, TOU HIDEKI, 田中博己, 末國晃一郎, 高畠敏郎, 佐々木孝彦
    日本物理学会第71回年次大会(2018), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    Poster presentation

  • Cr;Mn化合物の圧力下における量子臨界点の探索II
    南太美雄, 河村健志, KOTEGAWA HISASHI, TOU HIDEKI, MATSUOKA EIICHI, SUGAWARA HITOSHI
    日本物理学会第71回年次大会(2019), Mar. 2016, Japanese, 東北学院大学(仙台), Domestic conference
    Poster presentation

  • Cr,Mn化合物の圧力下における量子臨界点の探索II
    南 太美雄, 河村 健志, 小手川 恒, 藤 秀樹, 松岡 英一, 菅原 仁
    日本物理学会第70回年次大会, Mar. 2016, Japanese, 東北学院大学, Domestic conference
    Poster presentation

  • High Magnetic Field Study of Pressure-induced Superconductor CrAs
    Qun Niu, K. Y. Yip, W. C. Yu, H. Kotegawa, H. Sugawara, H. Tou, S. K. Goh
    International Conference on Strongly Correlated Electron Systems, 2016, English, SCES, China, International conference
    Poster presentation

  • 強相関電子系の核磁気共鳴～f電子系の超伝導の理解を目指して～
    TOU HIDEKI
    琉球大学理学部物理系談話会, Dec. 2015, Japanese, Domestic conference
    [Invited]
    Invited oral presentation

  • 非フェルミ流体的振る舞いを示すPrNb2Al20の強磁場NMR
    TOU HIDEKI
    金属材料研究所強磁場超伝導材料研究センター研究会「20テスラ超強磁場NMRによる物性研究II」, Nov. 2015, Japanese, 金属材料研究所強磁場超伝導材料研究センター研究会「20テスラ超強磁場NMRによる物性研究II」, Domestic conference
    Invited oral presentation

  • 超伝導体La(O.F)BiS2の高圧下におけるホール効果と熱膨張測定
    秋田星二, 北川俊作, KOTEGAWA HISASHI, TOU HIDEKI, 井澤宏輝, 水口佳一, 三浦大介, 浅野卓也, 東中隆二, 松田達磨, 青木勇二, 田中将嗣, 高野義彦, 長尾雅則
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • 局所空間反転対称性の欠如したLaPt2Si2の単結晶試料を用いたNMRによる研究
    青山泰介, 久保徹郎, 松野治貴, KOTEGAWA HISASHI, TOU HIDEKI, 光田暁弘, 永野雄太郎, 荒岡信隆, 和田裕文, 山田裕
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • 強磁性超伝導体UGe2の73Ge-NMRによる磁気ゆらぎの研究
    野間雄一朗, 久保徹郎, KOTEGAWA HISASHI, TOU HIDEKI, 芳賀芳範, 山本悦嗣, 大貫惇睦, 伊藤公平, E.E.Haller, 仲村愛, 本間佳哉, 本多史憲, 青木大
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • 希土類化合物における電気磁気効果のNQRによる検証
    岸本恭来, TOU HIDEKI, KOTEGAWA HISASHI, 粟井佳樹, 室裕司, 高畠敏郎
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • 圧力誘起超伝導体CrAsのNMR
    中原真悟, KOTEGAWA HISASHI, TOU HIDEKI, SUGAWARA HITOSHI, MATSUOKA EIICHI, HARIMA HISATOMO
    日本物理学会2015年秋季大会, Sep. 2015, English, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • Γ3二重項結晶場基底状態を持つPrNb2Al20の強磁場93Nb-NMRによる研究
    久保徹郎, KOTEGAWA HISASHI, TOU HIDEKI, 東中隆二, 中間章浩, 青木勇二, 佐藤英行, 井原慶彦, 後藤貴行, 佐々木孝彦
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • テトラヘドライトCu12Sb4S13における金属-半導体転移に関するNMRによる研究
    松井隆志, 松野治貴, KOTEGAWA HISASHI, TOU HIDEKI, 田中博己, 末國晃一郎, 高畠敏郎
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • テトラヘドライトCu10Zn2Sb4S13のNMR/NQRによる研究
    松野治貴, 松井隆志, KOTEGAWA HISASHI, TOU HIDEKI, 田中博己, 末國晃一郎, 高畠敏郎
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • カゴ状物質PrTa2Al20の27Al-NMRによる研究
    三宅遼磨, 久保徹郎, KOTEGAWA HISASHI, TOU HIDEKI, 東中隆二, 中間章浩, 青木勇二, 佐藤英行
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • UCoAlの強磁性量子臨界終点近傍の圧力下NMRによる研究
    福本健太, KOTEGAWA HISASHI, TOU HIDEKI, 明比亮介, 松田達磨, 山本悦嗣, 芳賀芳範, Zachary Fisk, 大貫惇睦, 青木大, Jacques Flouquet
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • NMR/NQRから見たf電子多極子系の異常物性
    TOU HIDEKI
    J-Physics：多極子伝導系の物理 キックオフミーティング, Sep. 2015, Japanese, 神戸大学統合研究拠点コンベンションホール（神戸市）, Domestic conference
    Invited oral presentation

  • High field 93Nb-NMR studies of the Γ3 CEF doublet ground state system PrNb2Al20
    Tetsuro Kubo, Hisashi Kotegawa, Hideki Tou, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato, Yoshihiko Ihara, Takayuki Goto, Takahiko Sasaki
    TMU International Symposium on “ New Quantum Phases Emerging from Novel Crystal Structure, Sep. 2015, English, Tokyo Metropolitan University; Hachi-oji; Tokyo, International conference
    Poster presentation

  • Cr;Mn化合物の圧力下における量子臨界点の探索
    南太美雄, KOTEGAWA HISASHI, TOU HIDEKI, MATSUOKA EIICHI, SUGAWARA HITOSHI
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学(大阪府）, Domestic conference
    Poster presentation

  • Cr,Mn化合物の圧力下における量子臨界点の探索
    南 太美雄, 小手川 恒, 藤 秀樹, 松岡 英一, 菅原 仁
    日本物理学会2015年秋季大会, Sep. 2015, Japanese, 関西大学, Domestic conference
    Poster presentation

  • 圧力誘起超伝導体CrAsのNQRによる研究
    小手川 恒, 中原 真悟, 赤松 類, 藤 秀樹, 西脇 大平, SUGAWARA HITOSHI, HARIMA HISATOMO
    日本物理学会第70回年次大会, Mar. 2015, Japanese, 早稲田大学早稲田キャンパス(東京）, Domestic conference
    Poster presentation

  • PrNb2Al20の結晶場基底状態と低温における磁気揺らぎの発達の解析
    久保 徹郎, 小手川 恒, 藤 秀樹, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行
    日本物理学会第70回年次大会, Mar. 2015, Japanese, 早稲田大学早稲田キャンパス(東京）, Domestic conference
    Poster presentation

  • Cu10Zn2Sb4S13におけるCu-NMR/NQR
    松野 治貴, 松井 隆志, 小手川 恒, 藤 秀樹, 田中 博己, 末國 晃一郎, 高畠 敏郎
    日本物理学会第70回年次大会, Mar. 2015, Japanese, 早稲田大学早稲田キャンパス(東京）, Domestic conference
    Poster presentation

  • Ce, Pr, U系重い電子化合物の常伝導状態におけるNMR緩和率
    藤 秀樹, 松野 治貴, 久保 徹郎, 黒田 啓介, KOTEGAWA HISASHI
    日本物理学会第70回年次大会, Mar. 2015, Japanese, 早稲田大学早稲田キャンパス(東京）, Domestic conference
    Poster presentation

  • クラスレート化合物における電子格子相互作用とラットリング・トンネリング
    藤 秀樹
    スクッテルダイト化合物及び関連物質を舞台とした強相関電子系物理の新展開, Oct. 2014, Japanese, 東京大学物性研究所短期研究会, Domestic conference
    Invited oral presentation

  • 遍歴強磁性体URhGeの磁場誘起超伝導相近傍におけるNMR測定
    福本 健太, 小手川 恒, 藤 秀樹, HARIMA HISATOMO, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦, 青木 大, 伊藤 公平, E.E.Haller
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • 超伝導体La(O,F)BiS2とLa(O,F)BiSe2のNMR/NQRによる研究
    清水 祐貴, 赤松 類, 小手川 恒, 藤 秀樹, 井澤 宏輝, 水口 佳一, 三浦 大介, 浅野 卓也, 東中 隆二, 松田 達磨, 青木 勇二, 田中 将嗣, 長尾 雅則, 高野 義彦
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • ヘリカル磁性体CrAsの圧力印加による磁性 非磁性転移の研究
    中原 真悟, 小手川 恒, 藤 秀樹, SUGAWARA HITOSHI
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • カゴ状化合物LaBe13のNMRによる研究
    松野 治貴, 小手川 恒, 藤 秀樹, 清水 悠晴, 柳澤 達也, 網塚 浩, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • UBe13の極低温におけるNMRによる研究
    松野 治貴, 森田 恭平, 小手川 恒, 藤 秀樹, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • SrPt3Pの単結晶育成と超伝導特性
    堀江 基大, MATSUOKA EIICHI, 久保 徹郎, KOTEGAWA HISASHI, TOU HIDEKI, 寺嶋 太一, 宇治 進也, HARIMA HISATOMO, SUGAWARA HITOSHI
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学, Domestic conference
    Poster presentation

  • PrTa2Al20の27Al-NMR/NQRによる測定
    三宅 遼磨, 久保 徹郎, 小手川 恒, 藤 秀樹, 東中 隆二, 中間 章浩, 青木 勇二
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • NMRから見たクラスレート化合物におけるラットリングと量子トンネリング
    藤 秀樹
    物性物理セミナー, Sep. 2014, Japanese, 埼玉大学・理工学部, Domestic conference
    Invited oral presentation

  • La(O,F)BiS2の圧力下でのホール効果測定
    秋田 星二, 北川 俊作, 小手川 恒, 藤 秀樹, 井澤 宏輝, 水口 佳一, 三浦 大介, 浅野 卓也, 東中 隆二, 松田 達磨, 青木 勇二, 長尾 雅則, 高野 義彦
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • CeRuPOの圧力下で現れるメタ磁性転移に関する研究
    外山 智大, 北川 俊作, 小手川 恒, 藤 秀樹, 西脇 大平, 山内 良太, MATSUOKA EIICHI, SUGAWARA HITOSHI
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • 27Al―NMR/NQRによるPrT2Al20の研究
    久保 徹郎, 小手川 恒, 藤 秀樹, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行
    日本物理学会2014年秋季大会, Sep. 2014, Japanese, 中部大学(愛知県）, Domestic conference
    Poster presentation

  • Anomalous superconducting phase diagram and odd-parity superconductivity in Ube13: 9Be-NMR measurements
    Haruki Matsuno, Kyouhei Morita, Hisashi Kotegawa, Hideki Tou, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki
    SCES 2014 - International Conference on Strongly Correlated Electron Systems, Jul. 2014, English, Campus Saint Martin d'Heres Grenoble, France, International conference
    Poster presentation

  • "93Nb-NMR/NQR studies of non-Fermi liquid like behaviors in the Pr-based PrNb2Al20
    Tetsuro Kubo, Hisashi Kotegawa, Hideki Tou, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Aoki
    SCES 2014 - International Conference on Strongly Correlated Electron Systems, Jul. 2014, English, Campus Saint Martin d'Heres, Grenoble, France, International conference
    Poster presentation

  • NMRから見たｆ電子系の結晶場と準粒子状態
    藤 秀樹
    高知大学強相関電子物性研究会, May 2014, Japanese, 高知大学, Domestic conference
    Invited oral presentation

  • カゴ状構造を持つU系、Pr系化合物の多自由度と超伝導
    藤 秀樹
    物性研究所短期研究会「強相関電子系における局所対称性の破れと量子物性」, Nov. 2013, Japanese, 東京大学物性研究所, Domestic conference
    [Invited]
    Invited oral presentation

  • Si-NMR studies of Binary Silicon Clathrate Ba8Si46
    R. Muramoto, H. Kotegawa, H. Tou, H. Fukuoka, S. Yamanaka
    International Workshop on Novel Superconductors and Super Materials 2013, Nov. 2013, English, Shinagawa Grand Central Tower, International conference
    Poster presentation

  • Physical properties on two new superconductors in d-electron system:BaTi2Sb2O and AuTe2
    Shunsaku Kitagawa, H.Kotegawa, H. Tou, Hisatomo Harima, K. Ishida, K. Nakano, T. Yamaji, H. Kageyama, H. Ishii, K. Kubo, M. Nohara
    International Workshop on Novel Superconductors and Super Materials 2013, Nov. 2013, English, Shinagawa Grand Central Tower, International conference
    [Invited]
    Invited oral presentation

  • Ce、PrおよびU系重い電子化合物の強磁場中準粒子磁化率
    藤 秀樹
    金属材料研究所強磁場超伝導材料研究センター研究会 共催：強磁場フォーラム「20テスラ超強磁場NMRによる物性研究」, Nov. 2013, Japanese, 東北大学金属材料研究所2号館講堂, Domestic conference
    [Invited]
    Invited oral presentation

  • 重い電子超伝導体UBe13の超伝導状態の表面インピーダンスとNMR
    藤 秀樹
    平成25年度大洗研究会（アクチノイド分野）, Oct. 2013, Japanese, 東北大学東京分室（東京駅日本橋口・サピアタワー）, Domestic conference
    [Invited]
    Invited oral presentation

  • 鉄系超伝導体FeSeの圧力下77Se-NMR測定
    藤井 堅斗, 小手川 恒, 藤 秀樹, 竹屋 浩幸, 水口 佳一, 高野 義彦
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Poster presentation

  • 新しい超伝導体La(O,F)BiS2のNMR/NQRによる研究
    清水 祐貴, 冨田 佑介, 小手川 恒, 藤 秀樹, 井澤 宏輝A, 水口 佳一, 三浦 介, 出村 郷志, 出口 啓太, 長尾 雅則, 高野 義彦
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Poster presentation

  • 重い電子系強磁性体CeRuPOにおける圧力下31P-NMR
    北川 俊作, KOTEGAWA HISASHI, TOU HIDEKI, 山内 良太, MATSUOKA EIICHI, SUGAWARA HITOSHI
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Oral presentation

  • 強磁性体CeIr3B2の圧力効果とNMR測定
    村上 晃一, 小手川 恒, 久保田 和宏, 永島 壮太, 菅原 仁, 藤 秀樹
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Poster presentation

  • 「AuTe2における圧力誘起構造相転移と超伝導 」
    北川 俊作, 小手川 恒, 藤 秀樹, 石井 博文, 工藤 一貴, 野原 実, HARIMA HISATOMO
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Oral presentation

  • UCoAlの圧力下NMR測定
    明比 亮介, 小手川 恒, 野原 弘貴, 藤 秀樹, 松田 達磨, 山本 悦嗣, 芳賀 芳範, Zachary Fisk, 大貫 惇睦, 青木 大, Jacques Flouquet
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Poster presentation

  • UBe13及びLaBe13のNMRによる研究
    松野 治貴, 森田 恭平, 小手川 恒, 藤 秀樹, 芳賀 芳範, 山本 悦二, 大貫 惇睦, 清水 悠晴, 柳澤 達也, 網塚 浩
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Oral presentation

  • PrNb2Al20の(Al, Nb)-NMR，NQRによる研究
    久保 徹郎, 小手川 恒, 藤 秀樹, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Oral presentation

  • (La, Pt)-NMRによるLaPt2Si2の電荷密度波と超伝導の研究
    久保 徹郎, 木崎 泰英, 小手川 恒, 藤 秀樹, 永野 雄太郎, 荒岡 信隆, 光田 暁弘, 和田 裕文
    日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference
    Poster presentation

  • Structural phase transition and superconductivity in LaPt2Si2: La- and Pt-NMR studies
    Hideki Tou, Tetsuro Kubo, Yasuhide Kizaki, Hisashi Kotegawa, Yutaro Nagano, Nobutaka Araoka, Akihiro Mitsuda, Hirofumi Wada
    The International Conference on Strongly Correlated Electron System, Aug. 2013, English, Ito International Research Center Conference, The University of Tokyo, International conference
    Poster presentation

  • NMR Investigation of Quantum Critical End Point in UCoAl
    Hisashi Kotegawa, Ryosuke Akebi, Hideki Tou, Tatsuma Matsuda, Etsuji Yamamoto, Yoshinori Haga, Zachary Fisk, Yoshichika Onuki, Dai Aoki, Jacques Flouquet
    The International Conference on Strongly Correlated Electron System, Aug. 2013, English, Ito International Research Center Conference, The University of Tokyo, International conference
    Poster presentation

  • An Al-NMR study of the Pr-based heavy fermion system PrNb2Al20
    Tetsuro Kubo, Hisashi Kotegawa, Hideki Tou, Ryuji Higashinaka, Akihiro Nakama, Yuji Aoki, Hideyuki Sato
    The International Conference on Strongly Correlated Electron System, Aug. 2013, English, Ito International Research Center Conference, The University of Tokyo, International conference
    Poster presentation

  • Rattling and Quantum‐Tunneling States of Heavy Ba ions in Type‐I Clathrate Ba8Ga16Sn30
    H. Tou, K. Sonoda, K. Furumoto, H. Kotegawa, K. Suekuni, M. A. Avila, T. Takabatake
    17th International Symposium on Intercalation Compounds, May 2013, English, Sendai, Japan, International conference
    Oral presentation

  • 鉄系超伝導体FeSeの純良結晶を用いた77Se-NMR測定
    藤井堅斗, 小手川恒, 藤秀樹, 竹屋浩幸, 水口佳一, 高野義彦
    日本物理学会第68回年次大会, Mar. 2013, Japanese, 広島大学, Domestic conference
    Oral presentation

  • 遷移金属サイトにおけるNMR/NQRによるPrT2Al20の研究
    久保 徹郎, 小手川 恒, 藤 秀樹, 東中 隆二, 中間 章浩, 青木 勇二, 佐藤 英行
    日本物理学会2013年第69回年次大会, Mar. 2013, Japanese, 東海大学, Domestic conference
    Oral presentation

  • 新しい超伝導体La(O,F)BiS2のNMR/NQRによる研究
    清水 祐貴, 冨田 佑介, 小手川 恒, 藤 秀樹, 井澤 宏輝, 水口 佳一, 三浦 大介, 浅野 卓也, 中島 拓也, 東中 隆二, 松田 達磨, 青木 勇二, 出村 郷志, 出口 啓太, 長尾 雅則, 高野 義彦
    日本物理学会2013年第69回年次大会, Mar. 2013, Japanese, 東海大学, Domestic conference
    Oral presentation

  • 強磁性体CeRuPOの電気抵抗測定による相図作成
    外山 智大, 北川 俊作, KOTEGAWA HISASHI, TOU HIDEKI, 西脇 太平, 山内 良太, MATSUOKA EIICHI, SUGAWARA HITOSHI
    日本物理学会2013年第69回年次大会, Mar. 2013, Japanese, 東海大学, Domestic conference
    Oral presentation

  • 強磁性体CeIr3B2の圧力下NMR測定
    村上晃一, 小手川恒, 久保田和宏, 永島壮太, SUGAWARA HITOSHI, 藤秀樹
    日本物理学会第68回年次大会, Mar. 2013, Japanese, 広島大学, Domestic conference
    Oral presentation

  • UCoAlの量子臨界終点近傍における圧力下NMR
    明比亮介, 小手川恒, 野原弘貴, 藤秀樹, 松田達磨, 山本悦嗣, 芳賀芳範, Zachary Fisk, 大貫惇睦, 青木大, Jacques Flouquet
    日本物理学会第68回年次大会, Mar. 2013, Japanese, 広島大学, Domestic conference
    Oral presentation

  • UBe13の超伝導状態における9Be-NMR
    松野治貴, 森田恭平, 小手川恒, 藤秀樹, 芳賀芳典, 大貫惇睦
    日本物理学会第68回年次大会, Mar. 2013, Japanese, 広島大学, Domestic conference
    Oral presentation

  • UBe13の極低温におけるNMR・表面インピーダンスによる研究」
    松野 治貴, 森田 恭平, 小手川 恒, 藤 秀樹, 芳賀 芳範, 山 本悦嗣, 大貫 惇睦, 清水 悠晴, 柳澤 達也, 網塚 浩
    日本物理学会2013年第69回年次大会, Mar. 2013, Japanese, 東海大学, Domestic conference
    Oral presentation

  • 73Ge-NMRによるURhGeの磁気揺らぎの研究
    小手川 恒, 福本 健太, 外山 智大, 北川 俊作, 藤 秀樹, HARIMA HISATOMO, 芳賀 芳範, 山本 悦嗣, 大貫 惇睦, 青木 大, 伊藤 公平, E.E.Haller
    日本物理学会2013年第69回年次大会, Mar. 2013, Japanese, 東海大学, Domestic conference
    Oral presentation

  • 31P-NMRでみる重い電子系強磁性体CeRuPOにおける磁気ゆらぎの圧力変化
    北川 俊作, 外山 智大, KOTEGAWA HISASHI, TOU HIDEKI, 山内 良太, MATSUOKA EIICHI, SUGAWARA HITOSHI
    日本物理学会2013年第69回年次大会, Mar. 2013, Japanese, 東海大学, Domestic conference
    Oral presentation

  • クラスレート化合物のラットリングとトンネリング
    藤秀樹
    新学術領域研究「重い電子系の形成と秩序化」第4回研究会, Jan. 2013, Japanese, 東京工業大学, Domestic conference
    Poster presentation

  • 単結晶CeCu6のCu-NMRによる重い電子状態の研究
    黒田 啓介, 森田 恭平, KOTEGAWA HISASHI, SUGAWARA HITOSHI, TOU HIDEKI, 世良 正文
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Oral presentation

  • 層状窒化物超伝導体LixZrNClの91Zr-NMRによる研究
    小手川恒, 大城理, 藤秀樹, 笠原裕一, 岸梅工, 田口康二郎, 岩佐義宏
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Oral presentation

  • 重い電子超伝導体UBe13のBe-NMRによる研究
    藤秀樹
    平成24年度大洗研究会（アクチノイド分野）, Sep. 2012, Japanese, 東京、秋葉原ＵＤＸビル, Domestic conference
    [Invited]
    Invited oral presentation

  • 強磁性体CeRu2Al2BのNMRによる研究
    松野 治貴, 野原 弘貴, 小手川 恒, MATSUOKA EIICHI, 富山 陽, SUGAWARA HITOSHI, HARIMA HISATOMO, TOU HIDEKI
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Poster presentation

  • YbOs2Si2の単結晶育成と物性
    大谷 彰, 森本 やよい, SUGAWARA HITOSHI, MATSUOKA EIICHI, KOTEGAWA HISASHI, TOU HIDEKI
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Poster presentation

  • NMRからみたカゴ状物質のラットリング・トンネリングと電子格子相互作用
    藤秀樹
    新学術領域研究「重い電子系の形成と秩序化」ワークショップ-カゴ状構造に宿る強相関物性, Sep. 2012, Japanese, 首都大学東京, Domestic conference
    [Invited]
    Invited oral presentation

  • NMR Study for Perovskite-type Fe-based Superconductors and Iron Selenide Superconductors
    H. KOTEGAWA, Y. Tao, H. Tou
    International Union of Materials Research Societies-International Conference of Electronic Materials 2012(IUMRS-ICEM2012), Sep. 2012, English, 横浜, International conference
    [Invited]
    Invited oral presentation

  • FeSeの低温77Se‐NMR測定
    藤井堅斗, 小手川恒, 藤秀樹, 竹屋浩幸, 水口佳一, 高野義彦
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Poster presentation

  • CoAlの量子臨界点近傍におけるNMR
    明比亮介, 小手川恒, 野原弘貴, 藤秀樹, 松田達磨, 山本悦嗣, 芳賀芳範, Zachary Fisk, 大貫惇睦, 青木大, Jacques Flouquet
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Poster presentation

  • CeIr3B2のNMRと圧力効果
    村上 晃一, 小手川 恒, 藤 秀樹, 久保田 和宏, 永島 壮太, SUGAWARA HITOSHI
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Poster presentation

  • CeFePOの磁気抵抗
    山内 良太, 久保田 和宏, MATSUOKA EIICHI, SUGAWARA HITOSHI, 小手川 恒, 藤 秀樹
    日本物理学会2012年秋季大会, Sep. 2012, Japanese, 横浜国立大学, Domestic conference
    Poster presentation

  • 15N-NMR studies of layered nitride superconductor LixZrNCl
    H. Tou, H. Kotegawa
    International Union of Materials Research Societies-International Conference of Electronic Materials 2012(IUMRS-ICEM2012), Sep. 2012, English, 横浜, International conference
    [Invited]
    Invited oral presentation

  • Quantum critical end point in UCoAl proved by NMR measurements
    H. Kotegawa, H. Nohara, H. Tou, T. D. Matsuda, E. Yamamoto, Y. Haga, Z. Fisk, Y. Onuki, V. Taufour, D. Aoki, G. Knebel, J. Flouquet
    21st International Conference on Magnetism, Jul. 2012, English, Bexco, Busan, Korea (釜山、韓国), International conference
    Poster presentation

  • NMR study of Fe-based superconductors KxFe2-ySe2
    Y. Tomita, H. Koteawa, H. Tou, Y. Mizuguchi, H. Takeya, Y. Takano
    20th International Conference on Magnetism, Jul. 2012, English, Bexco, Busan, Korea (釜山、韓国), International conference
    Poster presentation

  • NMR Probing of Quasiparticle Susceptibility of Heavy Fermion System with f2 Configuration:Comparative Study with f1 System Under High Magnetic Field
    H. Tou, K. Asaki, H. Kotegawa, T. Onimaru, K. T. Matsumoto, Y. F Inoue, T. Takabatake
    Japan - French Workshop on Correlated Electronic Systems, Jul. 2012, English, Grenoble, France, International conference
    Oral presentation

  • Evidence of rattling transition in caged compounds LaRu2Zn20 and LaIr2Zn20: La-NMR studies
    H. Tou, K. Asaki, H. Kotegawa, T. Onimaru, K. T. Matsumoto, Y. F Inoue, T. Takabatake
    22nd International Conference on Magnetism, Jul. 2012, English, Bexco, Busan, Korea (釜山、韓国), International conference
    Poster presentation

  • Cu-NMR studies of heavy-Fermion compound CeCu6 under high magnetic fields
    K. Kuroda, K. Morita, H. Kotegawa, H. Sugawara, H. Tou
    19th International Conference on Magnetism, Jul. 2012, English, Bexco, Busan, Korea (釜山、韓国), International conference
    Poster presentation

  • 59Co-NMR Study in the vicinity of the Quantum critical wnd point in UCoAl
    H. Kotegawa, H. Nohara, R. Akebi, H. Tou, D. Aoki, J. Flouquet, T.D. Matsuda, E. Yamamoto, Y. Haga, Z. Zisk, Y. Onuki
    Japan - French Workshop on Correlated Electronic Systems, Jul. 2012, English, Grenoble, France, International conference
    Oral presentation

  • 量子臨界終点をもつUCoAlの圧力下NMR測定
    野原 弘貴, KOTEGAWA HISASHI, TOU HIDEKI, 松田 達磨, 山本 悦嗣, 芳賀 芳範, Zachary Fisk, 大貫 惇睦, 青木 大, Jacques Flouquet
    日本物理学会第67回年次大会, Mar. 2012, Japanese, 日本物理学会（関西学院大学）, Domestic conference
    Oral presentation

  • 鉄系超伝導体KxFe2-ySe2のNMR測定II
    冨田 佑介, KOTEGAWA HISASHI, TOU HIDEKI, 水口 佳一, 竹屋 浩幸, 高野 義彦
    日本物理学会第67回年次大会, Mar. 2012, Japanese, 日本物理学会（関西学院大学）, Domestic conference
    Oral presentation

  • 単結晶Type I Ba8Ga16Sn30のNMRによる研究
    古本 和哉, 園田 寛智, KOTEGAWA HISASHI, TOU HIDEKI, 末國 晃一郎, 才賀 裕太, 高畠 敏郎
    日本物理学会第67回年次大会, Mar. 2012, Japanese, 日本物理学会（関西学院大学）, Domestic conference
    Oral presentation

  • 重い電子超伝導体UBe13のNMRによる研究
    森田 恭平, 原 悠大, KOTEGAWA HISASHI, TOU HIDEKI, 芳賀 芳典, 大貫 惇睦
    日本物理学会第67回年次大会, Mar. 2012, Japanese, 日本物理学会（関西学院大学）, Domestic conference
    Oral presentation

  • 重い電子系化合物CeCu6の強磁場NMR
    黒田 啓介, 森田 恭平, KOTEGAWA HISASHI, SUGAWARA HITOSHI, TOU HIDEKI
    日本物理学会第67回年次大会, Mar. 2012, Japanese, 日本物理学会, 西宮市、関西学院大学, Domestic conference
    Oral presentation

  • CeIr3Si2とCeIr3B2の圧力下における電気抵抗率測定
    久保田 和宏, 永島 壮太, MATSUOKA EIICHI, SUGAWARA HITOSHI, 村上 晃一, KOTEGAWA HISASHI, TOU HIDEKI, SAKURAI TAKAHIRO, OHTA HITOSHI
    日本物理学会第67回年次大会, Mar. 2012, Japanese, 日本物理学会, 西宮市、関西学院大学, Domestic conference
    Poster presentation

  • NMRから見たカゴ状物質におけるラットリング転移」特定領域研究「配列ナノ空間を利用した新物質科学 ユビキタス元素戦略
    TOU HIDEKI
    第９回領域会議（平成２３年度）, Jan. 2012, Japanese, 新学術領域研究「重い電子」東京大学物性研究所, Domestic conference
    Oral presentation

  • 鉄系超伝導体KxFe2-ySe2のNMR測定
    冨田 佑介, KOTEGAWA HISASHI, TOU HIDEKI
    神戸大学研究基盤センター・若手フロンティア研究会2011, Dec. 2011, Japanese, 神戸大学, Domestic conference
    Oral presentation

  • 重い電子化合物CeCu6の強磁場NMR
    黒田 啓介, 森田 恭平, SUGAWARA HITOSHI, KOTEGAWA HISASHI, TOU HIDEKI
    神戸大学研究基盤センター・若手フロンティア研究会2011, Dec. 2011, Japanese, 神戸大学, Domestic conference
    Oral presentation

  • Spin dynamics in UBe13: 9Be-NMR studies, TOKIMEKI 2011 International workshop on heavy fermions
    Hideki Tou
    TOKIMEKI 2011, Nov. 2011, English, Dept. of Phys. Osaka University, Osaka,Japan, International conference
    Poster presentation

  • Spin dynamics in UBe13: 9Be-NMR studies
    Hideki Tou, Norihiko Tsugawa, Masafumi Sera, Kyohei Morita, Hisashi Kotegawa, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki
    TOKIMEKI 2011 International workshop on heavy fermions, Nov. 2011, English, Osaka, Japan, Domestic conference
    Oral presentation

  • 15N-NMR study in layered nitride superconductor LixZrNCl.
    H. Kotegawa, S. Oshiro, H. Tou, Y .Ksahara, Y. Kishiume, Y. Taguchi, Y. Iwasa
    International Conference of New Science Created by Materials with Nano Spaces: From Fundamentals to Applications, Nov. 2011, English, Sendai, Japan, International conference
    Oral presentation

  • 単結晶クラスレート化合物Ba8Ga16Sn30のNMRによる研究
    古本 和哉, 園田 寬智, KOTEGAWA HISASHI, TOU HIDEKI
    神戸大学理学研究科・サイエンスフロンティア研究発表会2011, Oct. 2011, Japanese, 神戸大学, Domestic conference
    Oral presentation

  • 単結晶Type I Ba8Ga16Sn30のGa-NMRによる研究
    古本 和哉, 園田 寛智, 小手川 恒, 藤 秀樹, 才賀 裕太, 末國 晃一郎, 高畠 敏郎
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会, 富山大学, Domestic conference
    Oral presentation

  • 層状窒化物超伝導体LixZrNClのNMRによる研究
    KOTEGAWA HISASHI, 大城 理, TOU HIDEKI, 笠原 裕一, 岸梅 工, 田口 康二郎, 岩佐 義宏
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会(開催地 富山大）, Domestic conference
    Oral presentation

  • 重い電子超伝導体UBe13の低温NMR
    森田 恭平, 原 悠大, KOTEGAWA HISASHI, TOU HIDEKI, 芳賀 芳典, 大貫 惇睦
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会(開催地 富山大）, Domestic conference
    Oral presentation

  • 重い電子系化合物CeCu6の高磁場NMRによる研究
    黒田 啓介, 森田 恭平, KOTEGAWA HISASHI, SUGAWARA HITOSHI, TOU HIDEKI
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会, 富山市、富山大学, Domestic conference
    Poster presentation

  • 「UCoAlのメタ磁性転移近傍におけるNMR測定
    野原 弘貴, KOTEGAWA HISASHI, TOU HIDEKI, 松田 達磨, 山本 悦嗣, 芳賀 芳範
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会(開催地 富山大）, Domestic conference
    Oral presentation

  • ペロブスカイト層を含む鉄系超伝導体Ca4(MgTi)3Fe2As2O8(Tc=40K)のNMR測定
    冨田 佑介, KOTEGAWA HISASHI, TOU HIDEKI, 荻野 拓, 堀井 滋, 岸尾 光二, 下山 淳一
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会(開催地 富山大）, Domestic conference
    Oral presentation

  • カゴ状超伝導体Ba8Si46のBa-NMRによる研究
    村本 亮, KOTEGAWA HISASHI, TOU HIDEKI, 山中 昭司
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会(開催地 富山大）, Domestic conference
    Oral presentation

  • Mass enhancement by multipole fluctuations in PrOs4Sb12: Sb-NMR studies
    Hideki Tou
    From Blue Pigment to Green Energy Cobalt mines - Skutterudites – Thermoelectrics, Sep. 2011, English, BATE,Dept. of Phys. Univ. of Oslo, Vikersund, Norway, International conference
    [Invited]
    Invited oral presentation

  • KxFe2-ySe2のNMRによる研究
    KOTEGAWA HISASHI, 冨田 佑介, TOU HIDEKI, 水口 佳一, 竹屋 浩幸, 高野 義彦
    日本物理学会2011年秋季大会, Sep. 2011, Japanese, 日本物理学会(開催地 富山大）, Domestic conference
    Oral presentation

  • Evidence for Odd-Parity Superconductivity in the Heavy-Fermion Superconductor UBe13: 9Be-NMR Studies
    Hideki Tou
    International conference on strongly correlated electron system (SCES’11), Aug. 2011, English, SCES 2011, Cambridge, UK, International conference
    Poster presentation

  • LaT2Zn20(T=Ru,Os)の構造相転移に関するNMRによる研究
    TOU HIDEKI
    新学術領域研究「重い電子系の形成と秩序化」第３回研究会（PS32), Jun. 2011, Japanese, 新学術領域研究「重い電子」東京大学物性研究所, Domestic conference
    Oral presentation

  • 鉄系超伝導体Fe(Te1-xSex)のNMRによる研究
    原 悠大, 野原 弘貴, KOTEGAWA HISASHI, TOU HIDEKI, 水口 佳一, 高野 義彦
    日本物理学会 2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Oral presentation

  • 大型インデンターセルを用いたSrFe2As2の高圧NMR
    川添 隆行, KOTEGAWA HISASHI, TOU HIDEKI, SUGAWARA HITOSHI, 武田 圭生, 小林 達生
    日本物理学会2011年秋季大会, Sep. 2010, Japanese, 日本物理学会, 堺市、大阪府立大学, Domestic conference
    Oral presentation

  • 大型インデンターセルを用いたSrFe2As2の高圧NMR
    川添 隆行, KOTEGAWA HISASHI, TOU HIDEKI, SUGAWARA HITOSHI, 武田 圭生, 小林 達生
    日本物理学会2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Oral presentation

  • 重い電子超伝導体UBe13のBe-NMR緩和率の磁場依存性
    森田 恭平, 原 悠大, 坂野 準哉, KOTEGAWA HISASHI, TOU HIDEKI, 芳賀 芳典, 大貫 惇睦
    日本物理学会2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Poster presentation

  • 質量分析機能を備えた気相NMR分光装置の開発
    戸名 正英, 藤原 亮正, 石川 春樹, SAKURAI MAKOTO, TOU HIDEKI, OHTA HITOSHI, 冨宅 喜代一
    日本物理学会2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Oral presentation

  • 希土類カゴ状物質LaRu2Zn20のLa-NMRによる研究
    浅木 謙治, TOU HIDEKI, KOTEGAWA HISASHI, 松本 圭介, 井上 幸大, 鬼丸 孝博, 高畠 敏郎
    日本物理学会2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Oral presentation

  • ペロブスカイト層を含む鉄系超伝導体の高圧電気抵抗測定とNMR測定
    田尾 幸樹, KOTEGAWA HISASHI, TOU HIDEKI, 荻野 拓, 堀井 滋, 岸尾 光二, 下山 淳一
    日本物理学会2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Oral presentation

  • カゴ状超伝導体Ba8Si46のBa-NMRによる研究
    村本 亮, KOTEGAWA HISASHI, TOU HIDEKI, 山中 昭司
    日本物理学会2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Poster presentation

  • Se/Te-NMR study of Fe(Te1-xSex)
    Y. Hara, H. Nohara, H. Kotegawa, H. Tou, Y. Mizuguchi, Y. Takano
    International Conference on Heavy Electrons 2010, Sep. 2010, English, International conference
    Poster presentation

  • NMR studies of Clathrate Compounds
    H. Tou, K. Sonoda, Y. Nishikawa, H. Kotegawa, H. Suekuni, T. Onimaru, T. Takabatake
    International Conference on Heavy Electrons 2010, Sep. 2010, English, International conference
    Poster presentation

  • Magnetic field dependence of the Be-NMR relaxation rate of Heavy - Fermion Superconductivity in UBe13
    K. Morita, Y. Hara, Z. Sakano, H. Kotegawa, H. Tou, Y. Haga, Y. Onuki
    International Conference on Heavy Electrons 2010, Sep. 2010, English, International conference
    Poster presentation

  • FeSeにおけるNMRの試料依存性と磁場依存性
    野原 弘貴, 原 悠大, KOTEGAWA HISASHI, TOU HIDEKI, 水口 佳一, 高野 義彦
    日本物理学会 2010年秋季大会, Sep. 2010, Japanese, 大阪府立大学, Domestic conference
    Poster presentation

  • Depend on sample and magnetic field of NMR measurements in FeSe
    H. Nohara, Y. Hara, H. Kotegawa, H. Tou, Y. Mizuguchi, Y. Takano
    International Conference on Heavy Electrons 2010, Sep. 2010, English, International conference
    Poster presentation

  • Anomalous behavior of Itinerant Weak Ferromagnet LaFe4As12 in NMR/NQR studies
    K. Asaki, H. Kotegawa, H. Tou, S. Tatsuoka, R. Higashinaka, T. Namiki, H. Sato
    International Conference on Heavy Electrons 2010, Sep. 2010, English, International conference
    Poster presentation

  • 遍歴強磁性体 LaFe4As12 の圧力下 NQR/NMR による研究
    浅木 謙治, KOTEGAWA HISASHI, TOU HIDEKI, 龍岡 翔, 東中 隆二, 並木 孝洋, 佐藤 英行
    日本物理学会 2009 年 65 回年次大会, Mar. 2010, Japanese, Domestic conference
    Oral presentation

  • 鉄系超伝導体 Sr2VFeAsO3 の 75As-NMR 測定と圧力効果
    田尾 幸樹, KOTEGAWA HISASHI, TOU HIDEKI, 荻野 拓, 堀井 滋, 岸尾 光二, 下山 淳一
    日本物理学会 2009 年 65 回年次大会, Mar. 2010, Japanese, Domestic conference
    Oral presentation

  • 鉄系超伝導体 Fe(Te1-xSex)及びFe(Te1-xSx)の Se/Te-NMR による研究
    原 悠大, 野原 弘貴, KOTEGAWA HISASHI, TOU HIDEKI, 水口 佳一, 高野 義彦
    日本物理学会 2009 年 65 回年次大会, Mar. 2010, Japanese, Domestic conference
    Oral presentation

  • 大型インデンターセルを用いたSrFe2As2の高圧NMR
    川添 隆行, KOTEGAWA HISASHI, TOU HIDEKI, SUGAWARA HITOSHI, 小林 達生
    日本物理学会第65回年次大会, Mar. 2010, Japanese, 日本物理学会, 岡山市、岡山大学, Domestic conference
    Oral presentation

  • 層状窒化物超伝導体 LixZrNCl の 15N-NMR による研究
    大城 理, KOTEGAWA HISASHI, TOU HIDEKI, 笠原 裕一, 岸梅 工, 岩佐 義宏, 田口 康二郎
    日本物理学会 2009 年 65 回年次大会, Mar. 2010, Japanese, Domestic conference
    Oral presentation

  • 重い電子超伝導体UBe13のBe-NMR緩和率
    森田 恭平, 原 悠大, KOTEGAWA HISASHI, TOU HIDEKI, 芳賀 芳典, 大貫 惇睦
    日本物理学会 第66回年次大会, Mar. 2010, Japanese, 新潟大学, Domestic conference
    Others

  • 質量分析機能を備えた気相NMR分光装置の開発II
    戸名 正英, 藤原 亮正, 石川 春樹, SAKURAI MAKOTO, TOU HIDEKI, OHTA HITOSHI, 冨宅 喜代一
    日本物理学会 第66回年次大会, Mar. 2010, Japanese, 新潟大学, Domestic conference
    Others

  • 希土類カゴ状物質LaT2Zn20(T=Ru,Ir)のNMRによる研究
    浅木 謙治, KOTEGAWA HISASHI, TOU HIDEKI, 松本 圭介, 井上 幸大, 鬼丸 孝博, 高畠 敏郎
    日本物理学会 第66回年次大会, Mar. 2010, Japanese, 新潟大学, Domestic conference
    Others

  • ペロブスカイト層を含む鉄系超伝導体の高圧電気抵抗測定とNMR測定II
    冨田 佑介, 田尾 幸樹, KOTEGAWA HISASHI, TOU HIDEKI, 荻野 拓, 堀井 滋, 岸尾 光二, 下山 淳一
    日本物理学会 第66回年次大会, Mar. 2010, Japanese, 新潟大学, Domestic conference
    Others

  • クラスレート化合物 Ba8Ga16Sn30 の NMR による研究 IV
    園田 寛智, KOTEGAWA HISASHI, TOU HIDEKI, 末國 晃一郎, 高畠 敏郎
    日本物理学会 2009 年 65 回年次大会, Mar. 2010, Japanese, Domestic conference
    Oral presentation

  • カゴ状超伝導体Ba8Si46のBa-NMRによる研究
    村本 亮, KOTEGAWA HISASHI, TOU HIDEKI, 山中 昭司
    日本物理学会 第66回年次大会, Mar. 2010, Japanese, 新潟大学, Domestic conference
    Others

  • UCoAlのメタ磁性転移近傍のNMR測定
    野原 弘貴, KOTEGAWA HISASHI, TOU HIDEKI, 松田 達磨, 山本 悦嗣, 芳賀 芳範
    日本物理学会 第66回年次大会, Mar. 2010, Japanese, 新潟大学, Domestic conference
    Others

  • 層状超伝導体の NMR による研究
    TOU HIDEKI
    特定領域研究「配列ナノ空間を利用した新物質科学 ユビキタス元素戦略」第５回領域会議, Jan. 2010, Japanese, Domestic conference
    Oral presentation

  • 大型インデンターセルを用いたSrFe2As2の高圧NMR測定
    川添 隆行, KOTEGAWA HISASHI, TOU HIDEKI, SUGAWARA HITOSHI, 小林 達生
    日本物理学会 2009 年秋季大会, Sep. 2009, Japanese, 日本物理学会, 東京都、立教大学, Domestic conference
    Oral presentation

  • 層状窒化物超伝導体 LixZrNCl の 15N-NMR による研究
    大城 理, KOTEGAWA HISASHI, TOU HIDEKI, 田口 康二郎, 笠原 裕一, 岸梅 工, 高野 琢, 岩佐 義宏
    日本物理学会 2010 年秋季大会, Sep. 2009, Japanese, Domestic conference
    Oral presentation

  • ホールドープ系 (Pr1-xSrx)FeAsO の 75As-NMR 測定
    田尾 幸樹, KOTEGAWA HISASHI, TOU HIDEKI, Jing JuA, Zhaofei Li, Mu Gang, Hei-hu Wen, 谷垣 勝己
    日本物理学会 2009 年秋季大会, Sep. 2009, Japanese, Domestic conference
    Oral presentation

  • クラスレート化合物 Ba8Ga16Sn30 の NMR による研究 III
    園田 寛智, KOTEGAWA HISASHI, TOU HIDEKI, 末國 晃一郎, 高畠 敏郎
    日本物理学会 2009 年秋季大会, Sep. 2009, Japanese, Domestic conference
    Oral presentation

  • UBe13 の高磁場 NMR
    TOU HIDEKI, 森田 恭平, 坂野 準哉, 芳賀 芳範, 大貫 惇睦
    日本物理学会 2009 年秋季大会, Sep. 2009, Japanese, Domestic conference
    Oral presentation

  • Odd-parity superconductivity in UPt3 and UBe13
    H. Tou
    International workshop Novel Spin Pairing 2009 (NSP2009), Sep. 2009, English, International conference
    Oral presentation

  • NMR studies of Layered Nitride superconductors LixZrNCl and Lix(THF)yHfNCl
    H. Tou
    The 9th International Conference on Materials and Mechanisms of Superconductivity (M2S-IX), Sep. 2009, English, Tokyo, Japan, International conference
    Oral presentation

  • FeSe と Fe(Te1-xSx)の Se/Te-NMR による研究
    原 悠大, 野原 弘貴, KOTEGAWA HISASHI, TOU HIDEKI, 水口 佳一, 高野 義彦
    日本物理学会 2009 年秋季大会, Sep. 2009, Japanese, Domestic conference
    Oral presentation

  • CexLa1-xB6 の IV 相への R(R=Pr，Nd)イオン添加効果
    近藤 晃弘, 谷田 博司, 松村 武, TOU HIDEKI, 世良 正文, 伊賀 文俊, 榊原 俊郎
    日本物理学会 2009 年秋季大会, Sep. 2009, Japanese, Domestic conference
    Oral presentation

  • 77Se-NMR study of Co-substituted FeSe
    H. Kotegawa, Y. Hara, S. Masaki, H. Tou, Y. Mizuguchi, Y. Takano
    The 9th International Conference on Materials and Mechanisms of Superconductivity (M2S-IX), Sep. 2009, English, Tokyo, Japan, International conference
    Oral presentation

  • PrOs4Sb12 の NMR から見た重い電子状態
    TOU HIDEKI
    新学術領域研究「重い電子系の形成と秩序化」第 2 回研究会, Aug. 2009, Japanese, Domestic conference
    Oral presentation

  • NMR and resistivity studies under pressure in Fe-based superconductors FeSe and SrFe2As2
    H. Kotegawa, S. Masaki, Y. Hara, T. Kawazoe, H. Tou, Y. Mizuguchi, Y. Takano, H. Sugawara, K.Murata
    International Conference on Materials and Mechanisms of Superconductivity, Jun. 2009, English, International conference
    Oral presentation

  • 鉄系超伝導体FeSe圧力下Se-NMR による研究
    正木 了, KOTEGAWA HISASHI, TOU HIDEKI, 水口 佳一, 高野 義彦
    日本物理学会, Mar. 2009, Japanese, 立教大学, Domestic conference
    Oral presentation

  • 単結晶SrFe2As2における圧力誘起超伝導の研究
    KOTEGAWA HISASHI, 川添 隆行, 原 悠大, TOU HIDEKI, SUGAWARA HITOSHI
    日本物理学会, Mar. 2009, Japanese, 立教大学, Domestic conference
    Oral presentation

  • 層状窒化物LixZrNClの超伝導・常伝導状態の15N-NMRによる研究
    大城 理, 正木 了, KOTEGAWA HISASHI, TOU HIDEKI, 岸梅 工, 高野 琢, 笠原 裕一, 岩佐 義宏, 田口 康二郎
    日本物理学会, Mar. 2009, Japanese, 立教大学, Domestic conference
    Oral presentation

  • クラスレート化合物Ba8Ga16Sn30のGa-NMRによる研究II
    園田 寛智, KOTEGAWA HISASHI, TOU HIDEKI, 末國 晃一郎, 高畠 敏郎
    日本物理学会, Mar. 2009, Japanese, 立教大学, Domestic conference
    Oral presentation

  • Heavy Fermion superconductivity in UPt3 and UBe13; we can learn something from the past
    H. Tou
    First Meeting of Scientific Research on Innovative Area“Heavy Electrons”, Mar. 2009, English, 東京大学, Domestic conference
    Invited oral presentation

  • Ga-NMR studies of clathrate compound Ba8Ga16Sn30
    H. Tou
    First Meeting of Scientific Research on Innovative Area“Heavy Electrons”, Mar. 2009, English, 東京大学, Domestic conference
    Poster presentation

  • Ce0.4La0.6B6のIV相へのNdイオン添加効果
    近藤 晃弘, 谷田 博司, 松村 武, TOU HIDEKI, 世良 正文, 伊賀 文俊, 榊原 俊郎
    日本物理学会, Mar. 2009, Japanese, 立教大学, Domestic conference
    Oral presentation

  • 充填スクッテルダイト LaFe4As12 の NQR/NMR による研究
    浅木 謙治, TOU HIDEKI, KOTEGAWA HISASHI, 龍岡 翔, 東中 隆二, 佐藤 英行, 並木 孝洋
    日本物理学会 2009 年秋季大会, 2009, Japanese, Domestic conference
    Oral presentation

  • 重い電子系弱強磁性体YbRhSbのSb-NMR/NQRによる研究
    粟井 佳樹, KOTEGAWA HISASHI, TOU HIDEKI, 室裕 司, 拝崎 幸雄, 高畠 敏郎
    日本物理学会, Sep. 2008, Japanese, 岩手大学, Domestic conference
    Oral presentation

  • Yb2Pd2M(M = In，Sn)のNMR and NQR
    横山 誠也, KOTEGAWA HISASHI, TOU HIDEKI, 和田 信二, E. Bauer
    日本物理学会, Sep. 2008, Japanese, 岩手大学, Domestic conference
    Oral presentation

  • P-NMRによる単結晶SmRu4P12の多極子秩序の研究
    正木 了, KOTEGAWA HISASHI, TOU HIDEKI, 和田 信二, 水戸 毅, 菅原 仁, 菊地 大輔, 佐藤 英行
    日本物理学会, Sep. 2008, Japanese, 岩手大学, Domestic conference
    Oral presentation

  • M.A.Avila，高畠敏郎, クラスレート化合物Ba8Ga16Sn30 のNMRによる研究
    園田 寛智, 西川 祐介, KOTEGAWA HISASHI, TOU HIDEKI, 末國 晃一郎
    日本物理学会, Sep. 2008, Japanese, 岩手大学, Domestic conference
    Oral presentation

  • CexLa1−xB6のIV 相へのPr添加効果
    谷口 隼大, 近藤 晃弘, 谷田 博司, 松村 武, TOU HIDEKI, 世良 正文, 伊賀 文俊
    日本物理学会, Sep. 2008, Japanese, 岩手大学, Domestic conference
    Oral presentation

  • Ce0.6La0.4B6のIV相へのR(R=Nd，Pr)イオン添加効果
    近藤 晃弘, 谷口 隼大, 谷田 博司, 松村 武, TOU HIDEKI, 世良 正文, 伊賀 文俊, 榊原 俊郎
    日本物理学会, Sep. 2008, Japanese, 岩手大学, Domestic conference
    Oral presentation

  • 15N-NMRによる層状超伝導物質LixZrNClの研究
    大城 理, 正木 了, KOTEGAWA HISASHI, TOU HIDEKI, 高野 琢, 田口 康二郎, 岩佐 義宏
    日本物理学会, Sep. 2008, Japanese, 岩手大学, Domestic conference
    Oral presentation

■ Research Themes
  • Unveiling of the microscopic states of non-Fermi liquid behavior due to the magnetic two-channel Kondo effect.
    鬼丸 孝博, 岩佐 和晃, 藤 秀樹
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Hiroshima University, 01 Apr. 2024 - 31 Mar. 2027

  • Two-channel Kondo effect in diluted rare-earth systems
    ONIMARU Takahiro
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Hiroshima University, 01 Apr. 2018 - 31 Mar. 2022
    A variety of phenomena in strongly correlated electron systems due to the Kondo effect and RKKY interaction have attracted much attention as one of the main issues in the field of the solid state physics. In the present work, in order to verify the single-site two-channel Kondo effect, we have measured the electrical resistivity, specific heat, magnetization, elastic constant, thermal expansion, and magnetostriction of a Pr dilute system Y(Pr)Ir2Zn20 down to low temperatures below 0.1 K. They exhibit non-Fermi liquid (NFL) behaviors whose temperature variations are consistent with those expected from calculation with the two-channel Kondo model. In addition, we observed similar NFL behaviors in La(Pr)Ti2Al20 and a dilute Nd system Y(Nd)Co2Zn20 with 4f3 configuration, which give us suggestive information of the two-channel Kondo effect.

  • Dynamical response of augmented multipoles
    Amitsuka Hiroshi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Hokkaido University, 29 Jun. 2015 - 31 Mar. 2020
    We have developed solid-state physics research based on "augmented multipoles," which are the combined degrees of freedom of charge, spin, and orbitals of electrons on an atom, as well as electrical and magnetic clusters and bond clusters formed across multiple atoms. We have advanced the understanding of various physical phenomena that are difficult to describe by conventional methods using basic degrees of freedom of charge, spin, and orbitals, as well as the possibility of predicting new functionalities.

  • Understanding of the Mechanism of Superconductivity and Search for a Novel Superconducting State in Uranium Heavy-Fermion Compounds
    Ishida Kenji
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (S), Kyoto University, 29 May 2015 - 31 Mar. 2020
    We have investigated the relationship between magnetic fluctuations and superconductivity in U-based ferromagnetic (FM) superconductors. We found that the intimate relationship between the FM spin fluctuations and superconductivity, and suggested that the superconductivity in the FM superconductors is induced by the FM spin fluctuations. We measured 59Co-NMR Knight shift on UCoGe, and found that the Knight shift is hardly changed and the NMR spectrum becomes broader in the SC state. The results are in good agreement with the spin-triplet pairing scenario. It has been recognized that the U-based FM superconductors are the promising candidates of the bulk topological Weyl superconductors. Just after the discovery of the superconductivity in UTe2, we immediately started the studies and succeeded in preparing the high-quality of single crystals. From the NMR measurement, it was revealed that UTe2 is an unconventional superconductor with spin degree of freedom.

  • 播磨 尚朝
    科学研究費補助金／新学術領域研究, Apr. 2015 - Mar. 2020
    Competitive research funding

  • 小手川 恒
    科学研究費補助金／基盤研究(B), Apr. 2015 - Mar. 2018
    Competitive research funding

  • 藤 秀樹
    学術研究助成基金助成金／基盤研究(C), Apr. 2014 - Mar. 2017, Principal investigator
    Competitive research funding

  • 小手川 恒
    科学研究費補助金／基盤研究(B), Apr. 2012 - Mar. 2015
    Competitive research funding

  • Emergence of Heavy Electrons and Their Ordering
    UEDA Kazuo, HOTTA Takashi, SAKAKIBARA Toshiro, MIYAKE Kazumasa, HARIMA Hisatomo, YOKOYA Takayoshi, TOU Hideki, ISHIDA Kenji
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), The University of Tokyo, 13 Nov. 2008 - 31 Mar. 2014
    新学術領域研究「重い電子系の形成と秩序化」(平成20年度から平成24年度)の最終年度の研究成果について、公表された論文リストおよび国内学会あるいは国際学会等における発表について取りまとめを行った。これらの基礎データに加え、研究活動報告、特許出願状況などを加え、冊子体の成果報告書をまとめ印刷した。この成果報告書は当新学術領域研究の計画研究代表者、研究分担者、公募研究代表者に配布したほか、関連研究分野の有識者にも見ていただけるよう送付した。この冊子体については正式の成果報告書として6月に文科省に提出する予定である。 当新学術領域研究のホームページhttp://www.heavy-electrons.jpに関しては、上記の論文リスト、学会発表等のデータを含むよう更新した。重い電子系に関する研究は今後もさらに発展していくことが期待される。それに資することが出来るように、研究期間終了後もホームページを閲覧できる状態にして研究成果の公開を継続する体制を整えた。 当新学術領域研究の研究テーマと密接に関連する強相関電子系国際会議は平成25年8月5日から9日まで東京大学伊藤国際研究センターにおいて開催された。この会議の参加者は809名に上った。4つの基調報告を含む46件の招待講演、52件の口頭発表が伊藤謝恩ホールを主会場とし経済学部赤門総合研究棟の大講義室を第二会場として、パラレルセッションで講演が行われた。口頭発表のほか、639件のポスター発表が行われた。当新学術領域研究での研究成果が多数報告された。

  • 藤 秀樹
    科学研究費補助金／基盤研究(B), 2010, Principal investigator
    Competitive research funding

  • Preparation and Characterization of New Exotic Superconductors Having Porous Frameworks
    YAMANAKA Shoji, TOU Hideki, EKINO Toshikazu, INUMARU Kei
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (S), Hiroshima University, 2007 - 2009
    New exotic superconductors with layered or cage-like structures have been developed, and characterized on their physical properties. The layer structured nitride TiNCl with a two-dimensional orthogonal network was intercalated with alkali metals as well as organic bases, which was changed into superconductors with T_=8.6-16.4K. The electron-doped β-HfNCl and β-ZrNCl with double honey-comb layered structures were swelled with organic solvent molecules, and the effect of swelling (co-intercalation) on superconductivity was studied by measuring magnetic susceptibility and NMR. New silicon clathrate superconductors have been prepared under high pressure and high-temperature conditions.

  • Charier density control and charge/spin dynamics in layered nitride superconductors
    TAGUCHI Yasujiro, TOU Hideki, IWASA Yoshihiro
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), The Institute of Physical and Chemical Research, 2007 - 2008
    金属原子と窒素原子が蜂の巣状に並び、さらにそれが層状に積み重なった構造を有する超伝導体において、電気伝導を担うキャリアの数や、蜂の巣格子面の面間隔を系統的に制御した一連の試料を作製し、超伝導転移温度やその他の物理的特性の、キャリア数に対する振る舞いを明らかにした。その結果、超伝導になるよりも高温では通常の金属とよく似た振る舞いを見せるが、その超伝導特性のうちのいくつかは、通常の超伝導体とは違った振る舞いを示すことがわかった。

  • 層状およびカゴ状構造を有するエキゾチック超伝導体の開発
    山中 昭司, 藤 秀樹, 浴野 稔一, 犬丸 啓
    日本学術振興会, 科学研究費助成事業, 特定領域研究, 広島大学, 2007 - 2008
    1. La-Si二元系の高圧状態図を作成し, 新規Siリッチ相LaSi_5およびLaSi_<10>を合成し, それぞれ, Tc=10.5および6.7Kで超伝導体となることを見いだした。層状窒化物TiNClへのインターカレーションを調べ, アルカリ金属の種類にかかわらずTc=16.3Kの超伝導体となることをあきらかにした。有機塩基のピリジンのインターカレーションではTc=8.6Kの超伝導体となり, 超伝導発現の機構が異なる可能性が示唆された。 2. STM測定を行ない, 層状ハニカム構造をもつβ-HfNCl_<0.7>(T_c=24K)の鮮明なHf原子配列の観測に初めて成功した。この物質では面内100nm^2程度の領域で電子状態が均一であり, 異常な超伝導ギャップ値2Δ〜9k_BT_cを持つ事を明らかにした。銅酸化物超伝導体については電子状態が頂点酸素の影響を受けて生じている可能性を見出した。 3. NMRによる研究では, Li(THF)HfNClの磁束格子の運動について緩和率の測定から、磁化測定における不可逆温度曲線が、磁束ガラス状態と磁束液体との境界線であることを明らかにした。Fe系化合物のNMR実験を行いFeSe_<0.92>において、非BCS超伝導体に特有な緩和率の温度依存性を見いだし、超伝導状態についての知見を得た。また、SrFe_2As_2において圧力誘起超伝導を電気抵抗による測定で明らかにした。 4. 共有結合性の化合物の結晶膜をPLDなどの物理的な製膜法で合成できれば物質探索の幅が大きく広がる。共有結合性窒化物である六方晶窒化ホウ素(h-BN)の薄膜合成を試み、窒素ラジカル照射下でのPLDにより結晶性のh-BN薄膜を合成することができた。

  • 藤 秀樹
    科学研究費補助金／特定領域研究, 2008, Principal investigator
    Competitive research funding

  • 藤 秀樹
    科学研究費補助金／新学術領域研究, 2008, Principal investigator
    Competitive research funding

  • Study of the competition between the multipole interaction and Kondo effect in magnetic ion doped RB_6 (R=rare-earthion)
    SERA Masafumi, TOU Hideki, IGA Fumitoshi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Hiroshima University, 2006 - 2007
    The purposes of this study are to clarify the mechanisms of the competition between the multipole interaction and Kondo effect in RB_6(R=rare-earth ion). We obtained the following results. (1) The investigation on Ce_xR_<1-x>B_6 showed that the Ce-Nd interaction is very weak but the Ce-Pr one is strong. In the latter, Ce and Pr ion cooperatively form the ordered state and Kondo effect is destroyed but in the former; the ordered state is constructed mainly by Ce ions and Nd ions have a strong paramagetnic character and Kondo effect remains even in the ordered state. (2) By the neutron diffraction experiment on phase IV of Ce_<0.7>La_<0.3>B_6, the direct observation of the octupole order was discovered. However, as the O_-FQ order expected from the proposed octupole order competes with the O_-AFQ interaction which is the intrinsic interaction in CeB_6, the overall nature of Ce_xLa_<1-x>B_6 has not yet been clarified. (3) From the investigation of the R-doping effect on phase IV of Ce_<0.7>La_<0.3>B_6, phase IV is found to be easily destroyed by a small amount of Nd and Pr dopings. However, in the case of Ce_<0.6>La_<0.4>B_6, phase IV is strong for the Nd-doping and the following unexpected results was obtained. The transition temperature from phase IV to paramagnetic one is enhanced by Nd doping. (4) The pressure effect on PrB_6 was investigated. We discovered that a new phase appears above T_<10>=7K by applying only a small pressure of 0.3GPa. We also found that commensurate(C) phase is largely enhanced by applying pressure. These indicate that the short range interaction depending sensitively on the Pr-Pr distance. (5) In the pressure effect on CeB_6 we discovered the appearance of the ferromagnetic(FM) order above P=1.3GPa. This FM ground state is constructed from the coexistence of the O_-AFQ and T_-AFO orders. To our knowledge, this is the first example of the FM ground state without the exchange interaction.

  • 藤 秀樹
    科学研究費補助金／特定領域研究, 2007, Principal investigator
    Competitive research funding

  • 藤 秀樹
    科学研究費補助金／基盤研究(B), 2007, Principal investigator
    Competitive research funding

  • 層状およびカゴ状構造を有するエキゾチック超伝導体の開発
    山中 昭司, 藤 秀樹, 浴野 稔一, 犬丸 啓
    日本学術振興会, 科学研究費助成事業, 特定領域研究, 広島大学, 2005 - 2006
    山中は,シリコンクラスレート超伝導体Ba_8Si_<46>を超高圧で処理し,さらにSiリッチなBaSi6に構造転移することを明らかにした。La-Si2元系では,新たに高圧相LaSi_5の合成に成功し,Siからなるポリアセン擬1次元鎖を含み,Tc=11Kの超伝導体となることを明らかにした。MgB_2と同形のBaAlSiは超伝導を示さないが,Siが僅かに過剰なBaAl_<0.95>Si_<1.05>はTc=3Kの超伝導体となることを見いだした。 藤は、ZrNC10.7の塩素核のNMR測定に成功し、核磁気縦緩和率1/T1の測定をおこなった。常伝導状態では、1/T_1T=10^<-4>1/sKと通常のメタル状態に於いて観測される値より1桁以上小さな値をとることが明らかとなった。このことは、塩素サイトの部分状態密度が小さいことを示す。超伝導転移温度以下では、1/T1はHebel-Slighter peakや指数関数的な温度依存性を示さず、8K付近に磁束格子の運動に起因する緩和率の極大を示す。これらより、この物質の2次元的超伝導特性を明らかにした。 浴野は,STM/STSによりMgB_2やCaAlSiの局所電子状態の測定を行なっているが,さらに詳しく調べるため,表面観測にとって最も重要なパラメーターである仕事関数の空間分布の測定を開始した.基準物質であるBi_2Sr_2CaCu_2O_<8+y>について,この物質の仕事関数は,原子格子点の直上で大きい,BiO面変調構造の欠損部分で低く中腹部で高い,超伝導ギャップ分布との相関は弱い,など数々の新事実を見いだした. 犬丸は,CrNは反強磁性体でありT_N~270Kでmonoclinicな格子歪みを生じる.MgO(001)上に成長したCrN(001)薄膜では,バルクのT_N近傍で構造転移がみられるが,Al_2O_3面上のCrN(111)薄膜は構造転移を起こさなかった.つまりミスマッチが大きく格子が緩和した薄膜でも基板の効果で構造転移の有無を制御できた.CrN(111)薄膜の電気伝導にも異常が現れず,この膜は常磁性を保っていると推定された.

  • Development of superconductors with porous structures
    YAMANAKA Shoji, TOU Hideki, INUMARU Kei, FUKUOKA Hiroshi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Hiroshima University, 2004 - 2006
    i. Construction of the high-pressure synthesis apparatus The high-pressure synthesis apparatus of the cubic multianvil type has been changed to the 6-8 Kawai type anvil to enable a higher pressure condition up to 20 GPa at 2000 °C. ii. Development of new superconductors with silicon nano-networks The silicon clathrate superconductor Ba_8Si_<46> previously found in our group,.was transformed into the silicon rich compound BaSi_6 under extremely high pressure conditions. A new silicon rich phase LaSi_5 in the La-Si binary system has been prepared under a high pressure of 15 GPa, which became a superconductor with Tc = 11 K. iii. High pressure synthesis of carbon clathrate compound In the course of the study to prepare carbon clathrate compounds, two different types of crystalline three-dimensional C_<60> polymers have been prepared, body centered orthorhombic and face centered cubic 3D polymers. Their structural analyses, electrical conductivity measurements, and micro-Vickers measurements were carried out. iv. Development of new layer structured nitride superconductors Zr_5N_5F_6 and Hf_5N_5F_6 were prepared, and their single crystals were grown using a high-pressure flux method. The structural analysis revealed that the compounds had a long periodic structure based on the LaOF type layer structure. The true chemical composition was found to be close to Zr_5(N_40)F_6. The interlayer fluorine atoms could be partially removed, and the layer compound was changed to a new superconductor with Tc=4.5 K. v. Synthesis of thin films of nitride superconductors Molybdenum nitride thin films were obtained using PLD and MBE deposition with nitrogen RF radical source. B-Mo2N were successfully deposited as thin films, which showed superconductivity of Tc = 5.2 K.

  • 充填スクッテルダイト超伝導体の磁場誘起秩序と超伝導に関するNMRによる研究
    藤 秀樹, 世良 正文
    日本学術振興会, 科学研究費助成事業, 特定領域研究, 広島大学, 2004 - 2005
    充填スクッテルダイト超伝導体PrOs_4Sb_<12>は、Pr系で初めての重い電子超伝導体である。この物質の特筆すべき点は、(1)超伝導転移にともなって比熱の2段転移が観測され、熱伝導測定から超伝導多重相の存在が指摘されている。(2)ミュウ中間子実験では自発磁化の存在が観測されており、スピン3重項状態の可能性が指摘されている。(3)超伝導相が消失した後、磁場誘起秩反強四極子序相が現れ、Th対称性をもつ局在4f電子の結晶場が重要である。(4)反強四極子秩序相はこの系の重い電子超伝導対生成機構に関与していると考えられている。にまとめられるが、超伝導パリティをふくめ磁場誘起秩序相と超伝導機構の関係など重要な課題が残っている。 本研究では、特にこれまでに行われていない単結晶試料を用いた極低温(0.3ケルビン-15ケルビン)でのSb-NMR/NQR実験を行った。得られた結果は(1)磁場依存性・角度依存Sb-NMR実験から、Sb-NMRスペクトラムの帰属を精度良く決定し、電子スピン磁化率を評価する際の基礎データである電場勾配テンソルやナイトシフトに関する情報を得た。(2)バンド計算との比較から、これまで未知であった、Sbの核四極子モーメントを決定した。(3)精密なSb-NQR実験を行い、核四極子パラメータの低温での異常な温度依存性がTh対称性をもつPr-4f^2由来の16極子によるものであることをはじめて明らかにし、多極子自由度の存在と超伝導の関係を指摘した。(4)超伝導状態でナイトシフトの温度依存性が無いことから、スピン3重項超伝導状態であることを示唆する結果を得た。(1)〜(3)については公表済み。(4)については、現在執筆中である。また、これ以外に、(5)(Ba,Sr)Fe4Sb12のNQR/NMR実験から強磁性スピン揺らぎに関する知見を得た。(6)重い電子超伝導準粒子磁化率評価に関して、比熱や緩和時間からスピン磁化率を評価できることを示した。

  • Investigation of the Doping effect of the Magnetic ion on the hidden ordering and Kondo effect in CeB_6
    SERA Masafumi, TOU Hideki, IGA Fumitoshi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), HIROSHIMA UNIVERSITY, 2003 - 2004
    It is 1980 that the typical dense Kondo compound, CaB_6 is focused due to the appearance of the unusual phase transition. However, it is only recently that the quadrupolar and octupolar interactions play an essential role in its unusual low temperature phase. Recently, discovered new phase called as phase IV has attracted much attention and has been studied extensively to clarify its order parameter. The possibility of the appearance of the pure octupolar ordering has been discussed. In the present work, we have studied Ce_xR_<1-x>B_6(R=La,Pr,Nd) in detail and the followings are clarified. (1)The effect on the AF magnetic ordering by Nd doping in CeB_6 is very different from that by Pr doping. The interaction between Ce and Pr is strong but that between Ce and Nd is surprisingly week. As a result of that, the Kondo state in the AF state of Ce_xPr_<1-x>B_6, is suppressed rapidly but that of Ce_xNd_<1-x>B_6 survives even when the system sets in the AF magnetic phase. (2)In one ordered phase of Ce_<0.7>Pr_<0.3>B_6, the different ordering wave vector was found between the neutron scattering and X-ray one. The possibility of the separation between the orbital and spin was suspected in the rare-earth element in which the strong L-S coupling should be expected. (3)The R(=Pr,Nd) doping in phase IV induces the unusual new phase. (4)The thermoelectric power has been studied intensively in Ce_xR_<1-x>B_6(R=La,Pr,Nd) in both zero and finite magnetic fields. The new important information on the competition between the Kondo effect and RKKY interaction has been obtained.

  • ハフニウム窒化物層状超伝導体の核磁気共鳴による超伝導発現機構の研究
    藤 秀樹
    日本学術振興会, 科学研究費助成事業, 若手研究(B), 広島大学, 2001 - 2002
    ハフニウム窒化物及びジルコニウム窒化物超伝導体の電気抵抗測定,SQUID磁化測定,超伝導状態でのLi-NMR,N-NMRやCl-MR測定を行った。 Li-NMRではLiスペクトルはナイトシフトゼロ付近で観測され、Liサイトには状態密度がほとんどないことを見いだし、微視的な観点からもHfNClの2次元的な電子状態を明らかにした。磁化率や実験で得られた超伝導相図に対し熱力学的関係から超伝導に関する電子状態についても考察を行い状態密度が、N(E_F)〜0.25states/(eV spin f.u.)であり、得られた状態密度は、10K級のBCS超伝導体のそれに比べ1桁小さいことから、25Kという高いTcを出すには、通常のBCS機構では困難であることを示した(Physical Review Letters, 2001掲載) Cl-NMRからも塩素ブロック層では局所状態密度がほとんどないことがわかり、超伝導はHfN層で起こっていることを明らかにした(Physica B掲載予定)。、アイソトープ置換をした試料の^<15>N-NMRから、窒素サイトの局所状態密度は有限であることが明らかとなった。超伝導状態でナイトシフトが減少することから、クーパー対がスピン1重項状態であることを示す直接的な証拠を得た。また、窒素アイソトープ置換による磁化率の実験では、アイソトープ効果はほとんどないことを明らかにした。これらの結果を考え合わせると、通常の電子格子相互作用による超伝導機構では説明困難であり、電子構造の2次元性が重要であると考えられる(Physical Review B掲載予定)。 ジルコニウム窒化物超伝導体では,磁場中電気抵抗測定に初めて成功し、2次元的な超伝導ゆらぎによる電気抵抗の振る舞いが確認された。現在この研究成果については投稿準備中である。

  • MAGNETISM AND STRUCTURE OF ALKALI-LOADED ZEOLITE LTA
    MANIWA Yutaka, TOU Hideki
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), TOKYO METROPOLITAN UNIVERSITY, 2000 - 2001
    K-ion type zeolite LTA (K_<12>Al_<12>Si_<12>O_<48>(H_2O)_n, which is abbreviated to K_<12>-LTA), is one of synthetic hydrated aluminosilicates. Its framework consist of SiO_4 and AlO_4 tetrahedra sharing the oxygen atom each other and forms two kinds of cage called α and β. These cages are nested each other and form a cubic lattice with a lattice constant 1.23nm. It was found that this system undergoes a phase transition to a ferromagnetic (FM)-like state below around 7K when additional K-atoms are loaded into well-dehydrated K-ion type LTA. K_x/K_<12>-LTA, where x is the number of additional K atoms per α- (or β-) cage. We investigated the structure and magnetism in this system. The main results are summarized below. 1. Magnetic and structural phase diagram was established in loading density 0< x<7 and temperature rage 2KSi-NMR and μSR experiments in K_x/K_<12>-LTA. The data clearly showed the magnetic transition as bulk properties. 3. We proposed the most probable magnetic structure which is a canted type II antiferromagnetism in face centered cubic lattice with spin S=1. 4. We discovered a new thermally chromatic phenomenon in Na-type zeolite FAU.

  • アンモニアドープ系フラーレン超伝導体の磁性と超伝導-核磁気共鳴による研究-
    藤 秀樹
    日本学術振興会, 科学研究費助成事業, 奨励研究(A), 東京都立大学, 1999 - 2000
    アンモニアドープ系フラーレン超伝導体の磁性と超伝導の関係について、(NH_3)K_3C_<60>の反強磁性磁気秩序状態の情報を微視的見地から得るために、プロトン(^1H)、カリウム(^<39>K)、カーボン(^<13>C)の核磁気共鳴による実験をおこなった。また、関連物質として層状超伝導体Li-HfNCl、アルカリソーダライト等の実験的研究を行った。 アンモニア系フラーレンのMott局在 アンモニアフラーレンのNMR研究を行い、低温45K以下で、フラーレン分子あたり1ボーア磁子(1μ_B)を有した反強磁性相であることを明らかにした。この系が300K以下の全温度領域で絶縁体状態であることを明らかにし、反強磁性構造は150Kで起きる構造挿転移と同時に起きるC60の分子軌道秩序と密接に関係していることを明らかにした。 層状超伝導体Li-HfNClの超伝導 Li-HfNCl系層状超伝導体はSQUID磁化率測定とNMR実験を相補的に用いることにより研究を行った。LiのNMRからLiサイトには電子状態密度を持たず、超伝導はHfN層で生じていることを明らかにした。また、磁化の測定から2次元超伝導に特有の超伝導揺らぎが見られることから、Li-HfNCl系の超伝導特性は層状構造を反映して準2次元的な超伝導であると考えられる。また、詳細な磁化率の測定から、状態密度や電子相関などについての議論を行い、これまでに報告されている超伝導とは異なった新しいタイプの超伝導であると示唆される(現在投稿中)。 アルカリソーダライトの反強磁性 アルカリソーダライトはFセンターがBCC構造をとるモット絶縁体であることがわかっている。このアルカリソーダライトについて磁化率およびNMRによる研究を行った。Al-NMRからナトリウム型ソーダライトは48Kで、また、カリウム型ソーダライトは70Kで反強磁性に転移することを明らかにした。磁気特性がFセンターのサイズに非常に敏感であることを明らかにした。

  • Investigation on the silicon network solids and related materials
    MANIWA Yutaka, TOU Hideki
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research on Priority Areas (A), Tokyo Metropolitan University, 1999 - 2000
    We investigated silicon network solids and related materials, and obtained the following results. (1) Silicon clathrate superconductor, Ba_8Si_<46> was found to show anomalous behaviors of spin-spin relaxation rate 1/T_2 and Knight shift in the superconducting state. (2) It was confirmed that the sharp large peak of the electronic density of states at the Fermi level is responsible for the occurrence of superconductivity in Si_<46> superconductors. The peak is due to a hybridization between Si and Ba orbitals. (3) A_3C_<60> compounds with large and small lattice constants, such as (NH_3)A_3C_<60>, Na_2AC_<60> and Li_xAC_<60> where A is alkali metals, were systematically investigated by NMR. The t_<1u> orbital degeneracy is important for the stability of the metallic states, and that its splitting and orbital ordering lead to antiferromagnetic ground states. (4) A new layered superconductor, HfNCl, was investigated by NMR and magnetic susceptibility. It was found that HfNCl is a two-dimensional superconductor with a very small density of states at the Fermi level. It was suggested that the superconductivity cannot be explained by the conventional mechanisms. (5) Thermal expansion of MWNT and SWNT was determined by means of x-ray diffraction. MWNT sample grown in hydrogen atmosphere was found to contain a lot of closed Russian doll type tubes for the first time. (6) C_<60> Polymers including Li and Na were investigated by NMR. It was shown that there are sp^3 carbon atoms consistent with proposed structures, and that the alkali ions are moving in the crystals. (7) Alkali-loaded zeolite LTA, whose framework structure is similar to that of the Si46 clathrates, was studied by NMR to clarify the origin of the ferromagnetism at low temperature in this system. The ^<29>Si NMR gave us information on the distribution of the magnetic moments.

  • Electronic states of alkali-doped CィイD260ィエD2 compounds : a NMR study
    MANIWA Yutaka, TOU Hideki
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), TOKYO METROPOLITAN UNIVERSITY, 1997 - 1998
    A systematic study of alkali-doped CィイD260ィエD2 compounds, AィイD23ィエD2CィイD260ィエD2 where A is a alkali metal, has been performed to clarify the electronic states, using nuclear magnetic resonance (NMR) technique. Main results are summarized as follows. 1. The ィイD113ィエD1C-heperfine coupling constants have been determined in the superconducting AィイD23ィエD2CィイD260ィエD2. 2. At, low temperatures (<100K), the enhancement of Korringa product, has been determined, which shows a weak antiferromagnetic correlation. 3. Rising temperature and increasing lattice constant, the enhancement of Korringa product, increases. This was at atributed to the short electron mean free path in this system. 4. Ammoniated AィイD23ィエD2CィイD260ィエD2 superconductors with expanded lattice constants show a "gap"-like behavior in the temperature dependence of spin-lattice relaxation time TィイD21ィエD2. 5. It was shown that (NH3)K3C60 is described as a localized spin system in whole temperature studied (<300 K) and undergoes an antiferromagnetic transition at 45 K. 6. From these results, it was strongly suggested that the metallic state of AィイD23ィエD2CィイD260ィエD2 is unstable to the local distortion around CィイD260ィエD2 molecules.

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