Research activity information

• 2024 JPSJ Paper of Editors’ choice, Intrinsic Anomalous Hall Effect Arising from Antiferromagnetism as Revealed by High-Quality NbMnP

  新井祐樹, 林純一, 武田圭生, 藤秀樹, 菅原仁, 小手川恒


• 2024 日本物理学会第29回論文賞

  小手川恒, 中原真悟, 藤秀樹, 菅原仁


• 2022 日本物理学会第27回論文賞

  小手川恒, V. Taufour, 青木大, G. Knebel, J. Flouquet


• 2014 JPSJ Paper of Editors’ choice, Superconductivity of 2.2 K under Pressure in Helimagnet CrAs

  小手川恒, 中原真悟, 藤秀樹, 菅原仁


• Mar. 2013 日本物理学会, 日本物理学会 若手奨励賞, 強相関電子系における圧力をパラメータとした新奇量子相の研究

  KOTEGAWA HISASHI

  Japan society


• 2012 JPSJ Paper of Editor's choice, Decoupling between Field Instabilities of Antiferromagnetism and Pseudo Metamagnetism in Rh Doped CeRu2Si2 Kondo Lattice

  青木大, C. Paulsen, 小手川恒, F. Hardy, C. Meingas, P. Haen, M. Boukahil, W. Knafo, E.Ressouche, S. Raymond, J. Flouquet


• 2012 The Physical Society of Japan, JPSJ Paper of Editors’ choice, Pressure Study of BiS2-­Based Superconductors Bi4O4S3 and La(O,F)BiS2

  KOTEGAWA HISASHI, TOMITA YUSUKE, TOU HIDEKI

  Official journal


• 2011 JPSJ Paper of Editors’ choice, Evolution toward Quantum Critical End Point in UGe2

  小手川恒, V. Taufour,青木大, G. Knebel, and J. Flouquet


• 2008 JPSJ Paper of Editors’ choice, High Pressure NQR Measurement in CeCu2Si2 up to Sudden Disappearance of Superconductivity

  K. Fujiwara, Y. Hata, K. Kobayashi, K. Miyoshi, J. Takeuchi, Y. Shimaoka, H. Kotegawa , T. C. Kobayashi, C. Geibel, F. Steglich


• 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

  小手川 恒, 中原真悟, 藤 秀樹, 菅原仁

  Official journal

• Large spontaneous Hall effect with flexible domain control in the antiferromagnetic material TaMnP

  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


• Large Anomalous Hall Conductivity Derived from an f-Electron Collinear Antiferromagnetic Structure.

  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


• Intrinsic Anomalous Hall Effect Arising from Antiferromagnetism as Revealed by High-Quality NbMnP

  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


• Superconducting and Fermi Surface Properties of a Valence Fluctuation Compound CeIr2

  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)


• Large anomalous Hall effect and unusual domain switching in an orthorhombic antiferromagnetic material NbMnP

  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)


• Ferroic quadrupolar ordering in CeCoSi revealed using 59Co NMR measurements

  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


• Observation of multigap and coherence peak in the noncentrosymmetric superconductor CaPtAs: As75 nuclear quadrupole resonance measurements

  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


• Ising-type quasi-one-dimensional ferromagnetism with anisotropic hybridization in UNi4P2

  Arvind Maurya, Atsushi Miyake, Hisashi Kotegawa, Yusei Shimizu, Yoshiki J. Sato, Ai Nakamura, Dexin Li, Yoshiya Homma, Fuminori Honda, Masashi Tokunaga, Dai Aoki

  American Physical Society (APS), Feb. 2023, Physical Review B, 107(8) (8)

  Scientific journal


• Nested antiferromagnetic spin fluctuations and non-Fermi-liquid behavior in electron-doped CeCo$_{1-x}$Ni$_{x}$In$_5$

  Sakai Hironori, Tokunaga Yo, Kambe Shinsaku, Zhu J.-X.*, Ronning F.*, Thompson J. D.*, Kotegawa Hisashi*, To Hideki*, Suzuki Kohei*, Oshima Yoshiki*, Yokoyama Makoto*

  We investigate the electronic state of Ni-substituted CeCo$_{1-x}$Ni$_x$In$_5$ by nuclear quadrupole and magnetic resonance (NQR/NMR) techniques. The heavy fermion superconductivity below $T_{\rm c} = 2.3$ K for $x = 0$ is suppressed by Ni substitutions, and $T_{\rm c}$ reaches zero for $x = 0.25$. The $^{115}$In NQR spectra for $x = 0.125$ and 0.25 can be explained by simulating the electrical field gradient that is calculated for a virtual supercell with density functional theory. The spin-lattice relaxation rate $1/T_1$ indicates that Ni substitution weakens antiferromagnetic correlations that are not localized near the substituent but instead are uniform in space. The temperature ($T$) dependence of $(T_1T)^{-1}$ for $x = 0.25$ shows a maximum around $T_{\rm g} = 2$ K and $(T_1T)^{-1}$ decreases toward almost zero when temperature is further reduced as if a gap might be opening in the magnetic excitation spectrum; however, the magnetic specific heat and the static magnetic susceptibility evolve smoothly through $T_{\rm g}$ with a $-\ln T$ dependence. The peculiar T dependence of $(T_1T)^{-1}$ and non-Fermi-liquid specific heat and susceptibility can be interpreted in a unified way by assuming nested antiferromagnetic spin fluctuations in a quasi-two-dimensional electronic system.

  American Physical Society (APS), Dec. 2022, Physical Review B, 106(23) (23), 235152\_1 - 235152\_8, English

  [Refereed]

  Scientific journal


• Single crystal growth and de Haas-van Alphen effect in strong coupling s-wave superconductor SrPt3P

  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


• Noncollinear spin structure with weak ferromagnetism in NbMnP

  Masaaki Matsuda, Depei Zhang, Yoshiki Kuwata, Qiang Zhang, Takahiro Sakurai, Hitoshi Ohta, Hitoshi Sugawara, Keiki Takeda, Junichi Hayashi, Hisashi Kotegawa

  American Physical Society, Nov. 2021, Physical Review B, 104(17) (17), English

  Scientific journal


• Observation of Longitudinal Magnetic Fluctuations at a First-Order Ferromagnetic Quantum Phase Transition in UGe2

  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)


• Magnetic properties of the itinerant ferromagnet LaCrGe3 under pressure studied by la 139 NMR

  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


• 2021-03-15

  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


• Unusual Nonmagnetic Ordered State in CeCoSi Revealed by 59Co-NMR and NQR Measurements

  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


• First-order phase transition to a nonmagnetic ground state in nonsymmorphic NbCrP

  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


• Fermi Surface of the Heavy-fermion Superconductor PrTi2Al20

  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)


• 27Al-NMR/NQR Spectral Analysis of Single Crystal PrTa2Al20

  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


• Electronic State of V3Si Probed by 29Si NMR

  Asahi Nojirino, Masaya Aki, Yu Kawasaki, Yutaka Kishimoto, Koichi Nakamura, Yusuke Nakai, Takeshi Mito, Mitsuharu Yashima, Hidekazu Mukuda, Hisashi Kotegawa, Hitoshi Sugawara

  Journal of the Physical Society of Japan, Mar. 2020, JPS Conf. Proc., 30, 011050 (2020)

  [Refereed]

  International conference proceedings


• Precursor of Metal–Semiconductor Transition in Tetrahedrite Probed by Cu-NMR

  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]


• Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3P

  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


• 11B-NMR Investigation for Crystal Structure in Antiferromagnet UNi4B

  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


• Development of Short-range Correlations of 4f Electrons in the Non-Kramers Γ3 System PrNb2Al20 at Low Temperatures Investigated by NMR Measurements

  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


• Zn-Substitution Effect on Metal-Semiconductor Transition in Tetrahedrite Cu12Sb4S13

  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]


• Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3P

  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


• NMR studies on antiferromagnetic fluctuation in UPt3

  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


• Indication of Ferromagnetic Quantum Critical Point in Kondo Lattice CeRh6Ge4

  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)


• Magnetic correlations in the pressure-induced superconductor CrAs investigated by As 75 nuclear magnetic resonance

  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


• Optical and photoelectrical studies on anisotropic metal-insulator transition of RuAs

  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


• Evidence for Weak Spin-Orbit Interaction Experienced by Cooper Pairs in the Spin-Triplet Superconductor UPt3: Pt-195-NMR Study

  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]


• Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by la 139 NMR

  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


• First-Order Metal-Semiconductor Transition Triggered by Rattling Transition in Tetrahedrite Cu12Sb4S13: Cu-Nuclear Magnetic Resonance Studies

  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


• 27Al-NMR studies of the structural phase transition in LaPd2Al2

  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


• Magnetic anisotropy on the single crystal UNi4B probed by B-11 NMR

  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


• Superlattice formation lifting degeneracy protected by nonsymmorphic symmetry through a metal-insulator transition in RuAs

  H. Kotegawa, K. Takeda, Y. Kuwata, J. Hayashi, H. Tou, H. Sugawara, T. Sakurai, H. Ohta, Harima

  American Physical Society, May 2018, Phys. Rev. Mate., 2(5) (5), 055001/1 - 10, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• NMR spectrum analysis for CrAs at ambient pressure

  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)


• 73Ge-NMR study on magnetic fluctuations of ferromagnetic superconductor UGe2

  Y. Noma, H. Kotegawa, T. Kubo, H. Tou, H. Harima, Y. Haga, E. Yamamoto, Y. Ōnuki, K. M. Itoh, E. E. Haller, A. Nakamura, Y. Homma, F. Honda, D. Aoki

  Elsevier B.V., May 2018, Physica B: Condensed Matter, 536, 543 - 545, English

  [Refereed]

  Scientific journal


• Si-NMR Study of V₃Si

  Mori Hiro, Kotegawa Hisashi, Sugawara Hitoshi, Nojirino Asahi, Kawasaki Yu, Kishimoto Yutaka, Nakamura Ko-ichi, Koyama Takehide, Mito Takeshi, Yashima Mitsuharu, Mukuda Hidekazu

  The Physical Society of Japan, 2018, Meeting Abstracts of the Physical Society of Japan, 73, 1547 - 1547, Japanese


• NMR studies of pressure-induced superconductivity in CrAs and CrAs_1-xP_x(x=6%)

  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


• Optical investigation of anisotropic metal-to-insulator transition of RuAs

  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


• dHvA experiments in pressure-induced superconductor CrAs

  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)


• Anisotropic magnetic fluctuations in ferromagnetic superconductor UGe2:73Ge-NQR study at ambient pressure

  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

  Physical Society of Japan, 2018, J. Phys. Soc. Jpn., 87(7) (7), 073703/1 - 5, English

  [Refereed]

  Scientific journal


• 73Ge-NMR study on magnetic fluctuations of ferromagnetic superconductor UGe2

  AOYAMA Taisuke, Fumiaki Kobayashi, KOTEGAWA Hisashi, TOU Hideki, Petr Dolezal, Dominik Kriegner, Pavel Javorsky, Klara Uhlirova

  2018, Physica B-Cond. Matter, 536, 320 - 322, English

  [Refereed]

  Scientific journal


• 195Pt-NMR Evidence for Opening of Partial Charge-Density-Wave Gap in Layered LaPt2Si2 with CaBe2Ge2 Structure

  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


• 75As-nqr investigation of the relationship between the instability of metal–insulator transition and superconductivity in Ru1−xRhxAs

  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


• Emergent Weyl Fermion Excitations in TaP Explored by Ta-181 Quadrupole Resonance

  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), 236403, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Superconductivity and magnetic fluctuations developing in the vicinity of strong first-order magnetic transition in CrAs

  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


• Superconductivity and magnetic fluctuations developing in the vicinity of strong first-order magnetic transition in CrAs

  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


• Quasilinear quantum magnetoresistance in pressure-induced nonsymmorphic superconductor chromium arsenide

  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)


• NMR studies of coexistence of superconductivity and CDW in LaPt2Si2

  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


• Growth and NMR evaluation of a single crystal CePd2Ga

  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


• 9Be-NMR studies on anomalous superconducting phase diagram in UBe13

  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


• NMR Studies of magnetic symmetry of pressure-induced superconductivity in CrAs

  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


• Anisotropic metal-to-insulator transition of RuAs probed by polarized infrared spectroscopy

  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


• Determination of Temperature-Pressure-Magnetic field phase diagram of CeZn with a ferromagnetic phase

  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


• NMR/NQR study for single crystalline Ru_1-xRh_xAs with metal-insulator transition and superconductivity

  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


• Site-selective NMR measurements in single crystal PrNb2Al20

  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


• Sb-NMR/NQR studies of heavy fermion system YbRhSb

  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


• 21aPS-78 Search for Quantum Critical Point of Cr- and Mn-based Compounds under Pressure II

  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


• 21pBM-7 Single crystal NQR Studies for Investigation of Magnetoelectric Effect in The Rare Earth Compound YbRhSb.

  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


• 19aBN-12 NMR studies of coexistence of superconductivity and CDW in LaPt_2Si_2

  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


• 21aBN-4 The frequency dependence of the rattling in Cu_<10>Zn_2Sb_4S_<13> probed by NMR/NQR

  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


• 21aBN-2 NMR study on metal-semiconductor transition in tetrahedrite Cu_<12>Sb_4S_<13>

  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


• NMR Studies of pressure-induced superconductivity in CrAs

  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


• Substitution Effect and NMR Study of AntiFerromagnet Cr2GaN

  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


• NMR study on heavy fermion superconductor UBe₁₃

  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


• NMR studies on antiferromagnetic state in UPt₃ under a high magnetic field.

  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


• Search of ferromagnetic quantum critical point in CeZn under pressure

  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


• dHvA effect in LaV₂Al₂₀

  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


• NMR studies of single crystal PrT₂Al₂₀ (T = Nb, Ta)

  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


• NQR study of a single crystal RuAs with a metal-insulator transition

  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


• ²⁷Al-NQR studies of SmTa₂Al₂₀

  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


• NMR/NQR studies on CePd2Ga.

  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


• Analysis of Al-27- and Nb-93-NMR spectra of PrNb2Al20 single crystal

  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


• Absence of Magnetic Dipolar Phase Transition and Evolution of Low-Energy Excitations in PrNb2Al20 with Crystal Electric Field Gamma(3) Ground State: Evidence from Nb-93-NQR Studies

  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


• Ge-73-Nuclear Magnetic Resonance/Nuclear Quadrupole Resonance 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

  May 2015, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 84(5) (5), 054710/1 - 7, English

  [Refereed]

  Scientific journal


• Detection of an Unconventional Superconducting Phase in the Vicinity of the Strong First-Order Magnetic Transition in CrAs Using As-75-Nuclear Quadrupole Resonance

  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


• 19aPS-89 Search for Quantum Critical Point of Cr- and Mn-based Compounds under Pressure

  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


• 19aPS-93 NMR study on metal-semiconductor transition in tetrahedrite Cu_<12>Sb_4S_<13>

  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


• 16pCD-10 NMR/NQR studies on tetrahedrite Cu_<10>Zn_2Sb_4S_<13>

  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


• 17aPS-108 Verification of The Magnetoelectric Effect on The Rare Earth Compound by NQR

  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


• 17aPS-121 ^<73>Ge-NMR studies on magnetic fluctuations of ferromagnetic superconductor UGe_2

  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


• 16pCD-2 NMR of pressure induced superconductivity CrAs

  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


• 18pCL-11 NMR studies of single crystalline LaPt_2Si_2 without local inversion symmetry

  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


• 21aBB-1 NMR relaxation rate in the normal state of Ce, Pr U-based heavy fermion system

  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


• 22pBC-13 NQR Study of Pressure-Induced Superconductor CrAs

  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


• 22aPS-24 Cu-NMR/NQR studies on Cu_<10>Zn_2Sb_4S_<13>

  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


• Anomalous superconducting phase diagram in UBe13

  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)


• Nb-93- and Al-27-NMR/NQR studies of the praseodymium based PrNb2Al20

  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)


• Phase diagram of CeRuPO under pressure investigated by P-31-NMR: Comparison between CeRuPO under pressure and the Ce(Ru1-xFex)PO system

  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


• Ising-Type Ferromagnetic Ground State Driven by Anisotropic c-f Hybridization in CeRu2Al2B

  Haruki Matsuno, Hisashi Kotegawa, Eiichi Matsuoka, Yo Tomiyama, Hitoshi Sugawara, Hideki Tou

  Oct. 2014, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(10) (10), 103709/1 - 4, English

  [Refereed]

  Scientific journal


• Ising-Type Ferromagnetic Ground State Driven by Anisotropic c-f Hybridization in CeRu2Al2B

  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


• Superconductivity of 2.2K under Pressure in Helimagnet CrAs

  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


• Strong suppression of coherence effect and appearance of pseudogap in the layered nitride superconductor LixZrNCl: Zr-91- and N-15-NMR studies

  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)


• Structural Phase Transition and Superconductivity in LaPt2Si2: 139La- and 195Pt-NMR Studies

  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


• 27Al and 93Nb NMR/NQR Studies on the Pr-Based Heavy Fermion System PrNb2Al20

  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


• 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


• Pressure-Temperature-Magnetic Field Phase Diagram of Ferromagnetic Kondo Lattice CeRuPO

  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


• Strong Coupling of Rattling Phonon to Conduction Electrons in Semimetallic Type-I Clathrate Ba8Ga16Sn30

  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


• Pressure-induced superconductivity in mineral calaverite AuTe2

  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


• Pressure evolution of the metamagnetic transition in UCoAl As measured using Co-59 NMR

  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


• Evidence of a rattling transition in the caged compounds LaRu2Zn20 and LaIr2Zn20: La-139 NMR studies

  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


• Cu-NMR studies of the heavy-fermion compound CeCu6 under high magnetic fields

  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


• Field-Induced Phenomena in Ferromagnetic Superconductors UCoGe and URhGe

  Dai Aoki, Mathieu Taupin, Carley Paulsen, Frédéric Hardy, Valentin Taufour, Hisashi Kotegawa, Elena Hassinger, Liam Malone, Tatsuma D. Matsuda, Atsushi Miyake, Ilya Sheikin, William Knafo, Georg Knebel, Ludovic Howald, Jean-Pascal Brison, Jacques Flouquet

  Dec. 2012, J. Phys. Soc. Jpn. Suppl. B, 81, SB002, English

  [Refereed]

  International conference proceedings


• 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


• Weak Spin Fluctuation with Finite Wave Vector and Superconducting Gap Symmetry in KxFe2-ySe2: Se-77 Nuclear Magnetic Resonance

  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


• Pressure Study of BiS2-Based Superconductors Bi4O4S3 and La(O,F)BiS2

  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


• NMR investigation of the iron-based superconductors Ca-4(Mg,Ti)(3)Fe2As2O8-y and Ca-5(Sc,Ti)(4)Fe2As2O11-y

  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


• Pressure Study of BiS2-Based Superconductors Bi4O4S3 and La(O,F)BiS2

  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, English

  [Refereed]

  Scientific journal


• Indenter Type of Pressure Cell and Its Applications

  KOTEGAWA Hisashi, KOBAYASHI Tatsuo C.

  We review an indenter-type pressure cell, which possesses a maximum pressure of 5 GPa and a sample space of φ1.6×1.6 mm. This pressure cell is available not only for transport measurements but also for ac-susceptibility and NMR measurements. An advantage is the small size being able to change the direction of the pressure cell in the conventional superconducting magnet, which makes it possible to measure the anisotropy against magnetic field.
  

  The Japan Society of High Pressure Science and Technology, Aug. 2012, The Review of High Pressure Science and Technology, 22(3) (3), 214 - 221, Japanese


• Ising-Type Magnetic Anisotropy Derived by Gamma((1))(7) Crystal Electric Field Ground State in Tetragonal CeRu2Al2B: B-11 and Al-27 NMR Studies

  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


• Ising-Type Magnetic Anisotropy Derived by Gamma((1))(7) Crystal Electric Field Ground State in Tetragonal CeRu2Al2B: B-11 and Al-27 NMR Studies

  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), English

  [Refereed]

  Scientific journal


• Ising-Type Magnetic Anisotropy Derived by Γ7(1) Crystal Electric Field Ground State in Tetragonal CeRu2Al2B: 11B and 27Al NMR Studies

  H. Matsuno, H. Nohara, KOTEGAWA Hisashi

  The Physocal Socuety of Japan, Jun. 2012, J. Phys. Soc. Jpn., 81, 073705 - 1-4, English

  [Refereed]

  Scientific journal


• Decoupling between Field-Instabilities of Antiferromagnetism and Pseudo-Metamagnetism in Rh-Doped CeRu2Si2 Kondo Lattice

  Dai Aoki, Carley Paulsen, Hisashi Kotegawa, Frederic Hardy, Christoph Meingast, Pierre Haen, Mounir Boukahil, William Knafo, Eric Ressouche, Stephane Raymond, Jacques Flouquet

  Mar. 2012, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81(3) (3), 034711(1 - 10), English

  [Refereed]

  Scientific journal


• NMR Evidence of Freezing of Rattling Motion in LaIr2Zn20 and LaRu2Zn20

  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


• \ NMR spin-lattice relaxation rate of heavy fermion superconductor UBe13

  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


• Strong Longitudinal Magnetic Fluctuations Near Critical End Point in UCoAl: A Co-59-NMR Study

  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


• Ferromagnetic Quantum Critical Endpoint in UCoAl

  Dai Aoki, Tristan Combier, Valentin Taufour, Tatsuma D. Matsuda, Georg Knebel, Hisashi Kotegawa, Jacques Flouquet

  Sep. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(9) (9), English

  [Refereed]

  Scientific journal


• Pressure-induced structural phase transitions in UIr

  H. Kotegawa, S. Araki, T. Akazawa, A. Hori, Y. Irie, S. Fukushima, H. Hidaka, T. C. Kobayashi, K. Takeda, Y. Ohishi, K. Murata, E. Yamamoto, S. Ikeda, Y. Haga, R. Settai, Y. Onuki

  Aug. 2011, PHYSICAL REVIEW B, 84(5) (5), English

  [Refereed]

  Scientific journal


• Evolution toward Quantum Critical End Point in UGe2

  Hisashi Kotegawa, Valentin Taufour, Dai Aoki, Georg Knebel, Jacques Flouquet

  Aug. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(8) (8), 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


• Possible Mass Enhancement by Multipole Fluctuations Excited via the Singlet-Triplet Crystal Electric Field States in PrOs4Sb12: Sb-NMR Studies Using a Single Crystal

  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


• Heat Capacity and ac-Susceptibility Measurements of SmOs4Sb12 under High Pressure

  Tatsuo C. Kobayashi, Kazuki Miyazawa, Keisuke Tabira, Yoichi Ikeda, Shingo Araki, Hisashi Kotegawa, Hitoshi Sugawara, Daisuke Kikuchi, Hideyuki Sato

  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


• Possible Superconducting Symmetry and Magnetic Correlations in K0.8Fe2Se2: A Se-77-NMR Study

  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


• Superconductivity Reinforced by Magnetic Field and the Magnetic Instability in Uranium Ferromagnets

  D. Aoki, T.D. Matsuda, F. Hardy, C. Meingast, V. Taufour, E. Hassinger, I. Sheikin, C. Paulsen, G. Knebel, H. Kotegawa, J. Flouquet

  2011, J. Phys. Soc. Jpn., 80, SA008, English

  [Refereed]

  Scientific journal


• Se-77-NMR study of Co-substituted FeSe

  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


• N-15 NMR studies of layered nitride superconductor LixZrNCl

  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


• Anion height dependence of T-c for the Fe-based superconductor

  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


• Superconductivity in a new iron pnictide oxide (Fe2As2)(Sr-4(Mg, Ti)(2)O-6)

  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


• 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


• Contrasting Pressure Effects in Sr2VFeAsO3 and Sr2ScFePO3

  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


• Effect of Uniaxial Stress for Pressure-Induced Superconductor SrFe2As2

  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


• Precise Pressure Dependence of the Superconducting Transition Temperature of FeSe: Resistivity and Se-77-NMR Study

  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


• Pressure and magnetic field tuned quantum critical point in the Kondo antiferromagnet CePtZn

  S. K. Dhar, R. Kulkarni, H. Hidaka, Y. Toda, H. Kotegawa, T. C. Kobayashi, P. Manfrinetti, A. Provino

  Apr. 2009, JOURNAL OF PHYSICS-CONDENSED MATTER, 21(15) (15), English

  [Refereed]

  Scientific journal


• Pressure Effect on Yb-Based Strongly Correlated Electron Systems

  T. Mito, M. Otani, M. Nakamura, T. Koyama, S. Wada, H. Kotegawa, T.C. Kobayashi, B. Idzikowski, M. Reiffers, J.L. Sarrao

  Mar. 2009, Acta Physica Polonica, A 115, 47-52, English

  [Refereed]

  Scientific journal


• Evidence for Unconventional Superconductivity in Arsenic-Free Iron-Based Superconductor FeSe: A 77Se-NMR Study

  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 LaFeAsO_1−xF_x superconductor and shows superconductivity at 8 K. The nuclear-spin lattice relaxation rate 1⁄T₁ shows T³ behavior below the superconducting transition temperature T_c without a coherence peak. The T₁T=const. behavior, indicative of the Fermi liquid state, can be seen in a wide temperature range above T_c. The superconductivity in α-FeSe is also an unconventional one as well as LaFeAsO_1−xF_x 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


• Abrupt Emergence of Pressure-Induced Superconductivity of 34 K in SrFe2As2: A Resistivity Study under Pressure

  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 P_c∼3.6–3.7 GPa. Superconductivity with a sharp transition appears accompanied by the suppression of the AFM state. T_c exhibits a maximum of 34.1 K, which is realized close to the phase boundary at P_c. This T_c 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


• Observation of charge fluctuations in skutterudite compounds through an Sb-NQR measurement

  H. Kotegawa, Y. Irie, H. Hidaka, T. C. Kobayashi, D. Kikuchi, H. Sugawara, H. Sato

  Apr. 2008, PHYSICA B-CONDENSED MATTER, 403(5-9) (5-9), 772 - 774, English

  [Refereed]

  Scientific journal


• Evolution of transport and low-energy spin fluctuations in YbXCu4(X = Au and Pd) with the application of magnetic field

  A. Yamamoto, T. Yokoyama, S. Wada, K. Tabira, H. Kotegawa, T. C. Kobayashi, J. L. Sarrao

  Apr. 2008, PHYSICA B-CONDENSED MATTER, 403(5-9) (5-9), 1205 - 1207, English

  [Refereed]

  Scientific journal


• Anomalous Kondo Effect and Ordered State in Heavy Fermion System SmOs4Sb12 : Resistivity, Sb-NQR, and Magnetization Measurements under High Pressure

  Hisashi Kotegawa, Keisuke Tabira, Yuta Irie, Hiroyuki Hidaka, Tatuo C. Kobayashi, Daisuke Kikuchi, Kenya Tanaka, Sho Tatsuoka, Hitoshi Sugawara, Hideyuki Sato

  Jan. 2008, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77, 90 - 95, English

  [Refereed]

  Scientific journal


• de Haas-van Alphen study of the Pr-based filled skutterudite PrOs4P12

  Hitoshi Sugawara, Yoshinori Iwahashi, Ko-ichi Magishi, Takahito Saito, Kuniyuki Koyama, Hisatomo Harima, Daisuke Kikuchi, Hideyuki Sato, Toyoaki Endo, Rikio Settai, Yoshichika Onuki, Naoki Wada, Hisashi Kotegawa, Tatsuo C. Kobayashi

  Jan. 2008, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77, 108 - 113, English

  [Refereed]

  Scientific journal


• Uniform mixing of high-T-c superconductivity and antiferromagnetism on a single CuO2 plane in five-layered cuprates

  H. Mukuda, M. Abe, Y. Kitaoka, H. Kotegawa, K. Tokiwa, T. Watanabe, A. Iyo, H. Kito, Y. Tanaka, Y. Kodama

  Sep. 2007, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 460, 36 - 39, English

  [Refereed]

  Scientific journal


• Muon spin rotation study of magnetism in multilayer HgBa2Ca4Cu5Oy superconductor

  Tokiwa Kazuyasu, Mikusu Satoshi, Higemoto Wataru, Nishiyama Kusuo, Iyo Akira, Tanaka Yasumoto, Kotegawa Hisashi, Mukuda Hidekazu, Kitaoka Yoshio, Watanabe Tsuneo

  Sep. 2007, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 460, 892 - 895

  [Refereed]


• High-quality single crystal growth and physical properties in a ferromagnet UIr

  E. Yamamoto, Y. Haga, S. Ikeda, T. D. Matsuda, T. Akazawa, H. Kotegawa, T. C. Kobayashi, Y. Onuki, Y. Onuki

  Mar. 2007, Journal of Magnetism and Magnetic Materials, 310


• Uniform mixing of high-T-c superconductivity and antiferromagnetism in HgBa2Ca4Cu5O12+delta

  H Mukuda, M Abe, Y Araki, H Kotegawa, Y Kitaoka, K Tokiwa, T Watanabe, A Iyo, Y Tanaka

  May 2006, PHYSICA B-CONDENSED MATTER, 378-80, 457 - 458, English

  [Refereed]

  Scientific journal


• Pressure-induced superconductivity in ferromagnet UIr without inversion symmetry

  TC Kobayashi, S Fukushima, H Hidaka, H Kotegawa, T Akazawa, E Yamamoto, Y Haga, R Settai, Y Onuki

  May 2006, PHYSICA B-CONDENSED MATTER, 378-80, 355 - 358, English

  [Refereed]

  Scientific journal


• 27pTC-9 ^<73>Ge-NQR study of CeNi_2Ge_2 II

  Sada T., Kawasaki S., Mukuda H., Kitaoka Y., Miyoshi T., Kotegawa H., Kobayashi T.C., Fukuhara T., Maezawa K., Itoh K.M., Haller E.E.

  The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61.1.3, 554, Japanese


• Anisotropic residual resistivity under high pressure in UIr

  Hori Akihiro, Hidaka Hiroyuki, Kotegawa Hisashi, Kobayashi Tatsuo C, Akazawa Teruhiko, Ikeda Syugo, Yamamoto Etsuji, Haga Yoshinori, Settai Rikio, Onuki Yoshichika

  Jan. 2006, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75, 82 - 84

  [Refereed]


• In-115-NQR study of antiferromagnetism and superconductivity in CeRhIn5 and CeIn3 under pressure

  S. Kawasaki, M. Yashima, H. Kotegawa, T. Mito, Y. Kawasaki, Z. Q. Zheng, Y. Kitaoka, H. Shishido, S. Araki, D. Aoki, Y. Haga, R. Settai, Y. Onuki

  Jan. 2006, J. Phys. Chem. Solid., 67, 497 - 499, English

  [Refereed]

  Scientific journal


• Novel phase transition near the quantum critical point in the filled-skutterudite compound CeOs4Sb12: An Sb-NQR study

  M Yogi, H Kotegawa, GQ Zhang, Y Kitaoka, S Ohsaki, H Sugawara, H Sato

  Jul. 2005, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74(7) (7), 1950 - 1953, English

  Scientific journal


• Evidence for the microscopic coexistence of superconductivity and ferromagnetism in UGe2 : Ge-73-NMR/NQR study

  A Harada, H Kotegawa, Y Kawasaki, GQ Zheng, Y Kitaoka, E Yamamoto, Y Haga, Y Onuki, K Itoh, EE Haller

  Apr. 2005, PHYSICA B-CONDENSED MATTER, 359, 1057 - 1059, English

  [Refereed]

  Scientific journal


• Sb-121-NMR studies of single-crystal PrOs4Sb12

  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


• NMR/NQR experiments on heavy-fermion systems and superconductors

  Y Kitaoka, S Kawasaki, Y Kawasaki, H Kotegawa, T Mito

  Apr. 2005, PHYSICA B-CONDENSED MATTER, 359, 341 - 348, English

  Scientific journal


• Novel phase diagram of superconductivity and ferromagnetism in UGe2: a Ge-73-NQR study under high pressure

  Y Kitaoka, H Kotegawa, A Harada, S Kawasaki, Y Kawasaki, Y Haga, E Yamamoto, Y Onuki, KM Itoh, EE Haller, H Harima

  Mar. 2005, JOURNAL OF PHYSICS-CONDENSED MATTER, 17(11) (11), S975 - S986, English

  [Refereed]

  Scientific journal


• Evidence for uniform coexistence of ferromagnetism and unconventional superconductivity in UGe2: A Ge-73-NQR study under pressure

  H Kotegawa, A Harada, S Kawasaki, Y Kawasaki, Y Kitaoka, Y Haga, E Yamamoto, Y Onuki, KM Itoh, EE Haller, H Harima

  Feb. 2005, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74(2) (2), 705 - 711, English

  [Refereed]

  Scientific journal


• 19pPSA-81 Study of erectrical resistivity anormalies and Fermi surface of RAgSb_2(R=Ce, La)

  Watanabe Y., Inada Y., Nogami Y., Hidaka H., Kotegawa H., Kobayashi T. C.

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60.2.3, 413, Japanese


• Static and dynamical properties in the Pr-based filled skutterudite compound PrFe4P12 revealed by a P-31-NMR study

  Ishida K, Murakawa H, Kitagawa K, Ihara Y, Kotegawa H, Yogi M, Kitaoka Y, Young B. L, Rose M. S, MacLaughlin D. E, Sugawara H, Matsuda T. D, Aoki Y, Sato H, Harima H

  2005, Physical Review B, 71(2) (2)

  [Refereed]


• Pressure-induced superconductivity in UIr

  Akazawa T, Hidaka H, Kotegawa H, Kobayashi TC, Fujiwara T, Yamamoto E, Haga Y, Settai R, Onuki Y

  Nov. 2004, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(11) (11), 3129 - 3134

  [Refereed]


• Novel phase separation and spin dynamics of lightly doped La2-xSr2CuO4 probed by La-nuclear quadrupole resonance

  K Ishida, H Aya, Y Tokunaga, H Kotegawa, Y Kitaoka, M Fujita, K Yamada

  Jun. 2004, PHYSICAL REVIEW LETTERS, 92(25) (25), English

  [Refereed]

  Scientific journal


• Sb-NQR study of the "Kondo semiconductor'' CeOs4Sb12

  M. Yogi, H. Kotegawa, G. -q. Zheng, Y. Kitaoka, S. Osaki, H. Sugawara, H. Sato

  May 2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, E45 - E46, English

  [Refereed]

  Scientific journal


• Unconventional superconductivity in ferromagnetic UGe2: a Ge-73 nuclear magnetic resonance/nuclear quadrupole resonance study

  H Kotegawa, S Kawasaki, A Harada, Y Kawasaki, K Okamoto, GQ Zheng, Y Kitaoka, E Yamamoto, Y Haga, Y Onuki, KM Itoh, EE Haller

  Jul. 2003, JOURNAL OF PHYSICS-CONDENSED MATTER, 15(28) (28), S2043 - S2046, English

  [Refereed]

  Scientific journal


• Sb-NQR probe for superconducting properties in the Pr-based filled-skutterudite compound PrRu4Sb12

  M Yogi, H Kotegawa, Y Imamura, GQ Zheng, Y Kitaoka, H Sugawara, H Sato

  May 2003, PHYSICAL REVIEW B, 67(18) (18), English

  [Refereed]

  Scientific journal


• Unusual superconductivity in skutterudite compound PrOs4Sb12

  Kotegawa H, Yogi M, Imamura Y, Zheng G. Q, Kitaoka Y, Ohsaki S, Sugawara H, Aoki Y, Sato H

  2003, Acta Physica Polonica B, 34(2) (2), 1003 - 1006

  [Refereed]


• Evidence for unconventional strong-coupling superconductivity in PrOs4Sb12: An Sb nuclear quadrupole resonance study

  Kotegawa H, Yogi M, Imamura Y, Kawasaki Y, Zheng G. Q, Kitaoka Y, Ohsaki S, Sugawara H, Aoki Y, Sato H

  2003, Physical Review Letters, 90(2) (2)

  [Refereed]


• Evidence for high-frequency phonon mediated S-wave superconductivity: 11B NMR study of Al-doped MgB2

  H. Kotegawa, K. Ishida, Y. Kitaoka, T. Muranaka, N. Nakagawa, H. Takagiwa, J. Akimitsu

  Aug. 2002, Physical Review B - Condensed Matter and Materials Physics, 66(6) (6), 645161 - 645166, English

  Scientific journal


• Superconducting and magnetic characteristics in the multilayered high-Tc cuprates TlBa2Ca2Cu3O10-y with Tc>130 K probed by Cu and Tl NMR: High value for Tc

  H. Kotegawa, Y. Tokunaga, K. Ishida, G. Q. Zheng, Y. Kitaoka, A. Iyo, Y. Tanaka, H. Ihara

  May 2002, Physical Review B - Condensed Matter and Materials Physics, 65(18) (18), 1845041 - 1845044, English

  Scientific journal


• Evidence for high-frequency phonon mediated S-wave superconductivity: (formula presented) NMR study of Al-doped (formula presented)

  H. Kotegawa, K. Ishida, Y. Kitaoka, T. Muranaka, N. Nakagawa, H. Takagiwa, J. Akimitsu

  2002, Physical Review B - Condensed Matter and Materials Physics, 66(6) (6), 1 - 6, English

  [Refereed]

  Scientific journal


• Superconducting and magnetic characteristics in the multilayered high-(formula presented) cuprates (formula presented) with (formula presented) probed by Cu and Tl NMR: High value for (formula presented)

  H. Kotegawa, Y. Tokunaga, K. Ishida, G. Q. Zheng, Y. Kitaoka, A. Iyo, Y. Tanaka, H. Ihara

  2002, Physical Review B - Condensed Matter and Materials Physics, 65(18) (18), 1 - 4, English

  [Refereed]

  Scientific journal


• Strong coupling s-wave superconductivity in MgB2: B-11-NMR Study of MgB2 and Al-doped MgB2

  Kotegawa Hisashi, Ishida Kenji, Kitaoka Yoshio, Muranaka Takahiro, Nakagawa Norimasa, Takagiwa Hiroyuki, Akimitsu Jun

  Jan. 2002, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71, 332 - 334

  [Refereed]


• Coexistence of ferromagnetism and superconductivity in magnetic superconductor RuSr2YCu2O8 revealed by Cu-63-NMR

  Tokunaga Y, Kotegawa H, Ishida K, Kitaoka Y, Takagiwa H, Akimitsu J

  Nov. 2001, PHYSICA C, 364, 379 - 382

  [Refereed]


• Evidence for strong-coupling s-wave superconductivity in MgB2: B-11 NMR study

  H Kotegawa, K Ishida, Y Kitaoka, T Muranaka, J Akimitsu

  Sep. 2001, PHYSICAL REVIEW LETTERS, 87(12) (12), English

  [Refereed]

  Scientific journal


• Unusual magnetic and superconducting characteristics in multilayered high-T-c cuprates: Cu-63 NMR study

  H Kotegawa, Y Tokunaga, K Ishida, GQ Zheng, Y Kitaoka, H Kito, A Iyo, K Tokiwa, T Watanabe, H Ihara

  Aug. 2001, PHYSICAL REVIEW B, 64(6) (6), 1 - 5, English

  [Refereed]

  Scientific journal


• Unusual magnetic and superconducting characteristics in multilayered high-Tc cuprates: 63Cu NMR study

  H. Kotegawa, Y. Tokunaga, K. Ishida, G. Q. Zheng, Y. Kitaoka, H. Kito, A. Iyo, K. Tokiwa, T. Watanabe, H. Ihara

  Aug. 2001, Physical Review B - Condensed Matter and Materials Physics, 64(6) (6), 645151 - 645155, English

  [Refereed]

  Scientific journal


• NMR study of carrier distribution and superconductivity in multilayered high-T-c cuprates

  H Kotegawa, Y Tokunaga, K Ishida, GQ Zheng, Y Kitaoka, K Asayama, H Kito, A Iyo, H Ihara, K Tanaka, K Tokiwa, T Watanabe

  Jan. 2001, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 62(1-2) (1-2), 171 - 175, English

  [Refereed]

  Scientific journal


• Unconventional superconducting characteristics in the multilayered high-T-c cuprate (Cu0.6C0.4)Ba2Ca3Cu4O12+y probed by Cu-63 NMR

  Y Tokunaga, H Kotegawa, K Ishida, Y Kitaoka, K Tokiwa, A Iyo, H Ihara

  Nov. 2000, PHYSICA C, 341, 2121 - 2122, English

  [Refereed]

  Scientific journal


• Carrier distribution and superconductivity in multilayer high-T-c cuprates proved by Cu-63 NMR

  Y Tokunaga, H Kotegawa, K Ishida, GQ Zheng, Y Kitaoka, K Tokiwa, A Iyo, H Ihara

  Nov. 1999, JOURNAL OF LOW TEMPERATURE PHYSICS, 117(3-4) (3-4), 473 - 477, English

  [Refereed]

  Scientific journal


• Pseudogap behavior in single crystals of Bi2Sr2CaCu2O8+delta

  K Ishida, Y Tokunaga, H Kotegawa, K Yoshida, T Mito, Y Kitaoka, K Asayama, Y Nakayama, J Shimoyama, K Kishio

  Jan. 1999, PHYSICA B-CONDENSED MATTER, 259-61, 559 - 561, English

  [Refereed]

  Scientific journal

• 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


• U_1-xTh_xBe₁₃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


• 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, LI Dexin, 本多史憲, 青木大

  23 Sep. 2016, 日本物理学会講演概要集(CD-ROM), 71(2) (2), ROMBUNNO.15aPS‐101, 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

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


• 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, 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

  22 Mar. 2016, 日本物理学会講演概要集(CD-ROM), 71(1) (1), ROMBUNNO.20PBL‐2, Japanese


• 20pBL-5 NMR study of metamagnetic transition under pressure of UCoAl

  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), Japanese


• 19pBL-7 Single Crystal NMR Measurements of PrT_2Al_<20>

  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), 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


• 17aPS-104 Hall effect and thermal expansion of superconductor La(O,F)BiS_2 under pressure

  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), Japanese


• 17aPS-122 NMR measurements under pressure for UCoAl in the vicinity of ferromagnetic quantum critical end point

  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), 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


• 22aPS-116 Analysis of the CEF ground state and the development of magnetic fluctuations at low temperatures in PrNb_2Al_<20>

  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), Japanese


• 17aPS-55 ^<27>Al-NMR study for PrTa_2Al_<20>

  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), Japanese


• 18pDA-6 High field _<93>Nb-NMR study of the Γ_3 doublet CEF ground state system PrNb_2Al_<20>

  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), 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), 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), 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


• 28pBE-7 BiS_2 based superconductor investigated by pressure effect and NMR

  Kotegawa Hisashi

  The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 629 - 629, 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), Japanese


• 29pBE-4 NMR and surface impedance study of UBe_<13> at low temperature

  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


• 8aPS-28 NMR studies of the cage structural compound LaBe_<13>

  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


• 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


• 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., Demura S., Deguchi K., Nagao M., Takano Y.

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 529 - 529, 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


• NMR study on UBe_<13> and LaBe_<13>

  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), 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), 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


• 26aXB-4 Study of new quantum phase using pressure in strongly correlated electron systems

  Kotegawa Hisashi

  The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 572 - 572, 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), Japanese


• Magnetic excitations in iron chalcogenide superconductors

  Hisashi Kotegawa, Masaki Fujita

  Oct. 2012, SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 13(5) (5), English

  Book review


• 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-8 Decoupling between antiferromagnetism and pseudo-metamagnetism in Rh-doped CeRu_2Si_2

  Aoki D., Paulsen C., Hardy F., Haen P., Raymond S., Kotegawa H., Flouquet J.

  The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 548 - 548, 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), Japanese


• 21pFH-3 Magnetic Anisotropy and Transport properties of URhSi

  Matsuda T. D, Aoki D, Kotegawa H, Hassinger E, Taufour V, Knebel G, Braithwaite D, Salce B, Yamamoto E, Haga Y, Fisk Z, Flouquet J

  The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 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K_xFe_2−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), 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), Japanese


• K_xFe_2−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), 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


• 25aEC-9 Quantum Critical End Point in UGe_2 : Hall Effect under Pressure

  Kotegawa H., Taufour V., Aoki D., Knebel G., Flouquet J.

  The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 519 - 519, 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

  03 Mar. 2011, 日本物理学会講演概要集, 66(1) (1), 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), Japanese


• 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), 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), 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


• 23pPSB-15 AC heat capacity measurement in SmOs_4Sb_<12> under high pressure

  Kawasaki K., Miyazawa K., Araki S., Ikeda Y., Kobayashi T. C., Kotegawa H., Sugawara H., Kikuchi D., Sato H.

  The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 531 - 531, 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


• 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), 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), Japanese


• 鉄系超伝導体Fe(Te_1−xSe_x)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


• FeSe_x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


• 23aGH-9 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), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 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


• 21aPS-37 Heat capacity measurement in SmOs_4Sb_<12> under high pressure

  Miyazawa K., Araki S., Kobayashi T. C., Kotegawa H., Sugawara H., Kikuchi D., Sato H.

  The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65(1) (1), 610 - 610, Japanese


• 鉄系超伝導体Fe(Te_1−xSe_x)及びFe(Te_1−xS_x)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), 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), 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-100 Powder X-ray diffraction stud of SrFe_2As_2 under high pressure and low temperature

  Takeda K., Kotegawa H., Kawazoe T., Hara Y., Matsui K., Sekine C., Sugawara H., Ohishi Y.

  The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 500 - 500, 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


• 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), Japanese


• FeSeとFe(Te_1−xS_x)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


• 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

  03 Mar. 2009, 日本物理学会講演概要集, 64(1) (1), 614, Japanese


• X-ray diffraction in Fe-based pressure-induced superconductor SrFe2As2

  H. Kotegawa, K. Takeda, Y. Ooishi, T. Takayuki, Y. Hara

  2009, SPring-8 User Experiment Report, (2009A)


• Correlation between the structure and quantum criticality in a heavy fermion compound accompanied with valence fluctuation

  S. Tsutsui, H. Kotegawa, K. Takeda, K. Matusi, Y. Hara, K. Asaki, T. Matsuoka, Y. Ooishi, T.C. Kobayashi

  2009, SPring-8 User Experiment Report, (2009A)


• 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-74 Pressure effect of ferromagnet CeTiGe_3

  Manabe H., Kobayashi T. C., Kotegawa H., Takeshita N., Dhar S. K., Kulkarni R., Manfrinetti P.

  The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 510 - 510, 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


• 23pPSB-38 Crystalline structure and electrical resistivity in UIr under Pressure

  Akazawa T., Hori A., Tabira K., Irie Y., Kotegawa H., Kobayashi T.C., Takeda K., Ohishi Y., Yamamoto E., Ikeda S., Haga Y., Settai R., Onuki Y.

  The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 555 - 555, Japanese


• SmOs₄Sb₁₂における圧力下の異常な秩序状態

  田平景輔, 日高宏之, 小手川恒, 小林達生, 菊池大輔, 菅原仁, 佐藤英行

  2008, 日本物理学会講演概要集, 63(1) (1)


• 23pPSA-43 Pressure effect of CePtZn

  Toda Y, Hidaka H, Kotegawa H, Kobayashi T.C, Dhar S.K, Kulkarni R, Manfrinetti P

  The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), Japanese


• 23pPSA-18 Unusual ordered state under pressures in SmOs_4Sb_<12>

  Tabira K, Hidaka H, Kotegawa H, Kobayasi T.C, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2008, Meeting Abstracts of the Physical Society of Japan, 63(0) (0), Japanese


• Investigation of Pressure-Induced Valence Fluctuation in Heavy Fermion Superconductor CeCu2Si2

  T.C. Kobayashi, K. Takeda, H. Kotegawa, S. Tsutsui, N. Kawamura

  2008, SPring-8 User Experiment Report, (2008A)


• Crystal structure analysis of filled skutterudites with heavy lanthanide underhigh pressure and low temperature

  K. Takeda, H. Kotegawa, C. Sekine, J. Hayashi, Y. Ooishi

  2008, SPring-8 User Experiment Report, (2008A)


• High pressure NQR measurement in CeCu2Si2 up to sudden disappearance of superconductivity

  K. Fujiwara, Y. Hata, K. Kobayashi, K. Miyoshi, J. Takeuchi, Y. Shimaoka, H. Kotegawa, T. C. Kobayashi, C. Geibel, F. Steglich

  2008, J. Phys. Soc. Jpn., 77(12) (12), 123711


• Anomalous Kondo effect and ordered state in heavy fermion system SmOs4Sb12: Resistivity, Sb-NQR, and magnetization measurements under high pressure

  H. Kotegawa, K. Tabira, Y. Irie, H. Hidaka, T. C. Kobayashi, D. Kikuchi, K. Tanaka, S. Tatsuoka, H. Sugawara, H. Sato

  2008, J. Phys. Soc. Jpn., 77(Suppl. A) (Suppl. A), 90 - 95


• Sb-NQR study of PrOs4Sb12 under high pressure

  S. Kawasaki, K. Katayama, M. Nishiyama, H. Kotegawa, T. C. Kobayashi, H. Sugawara, D. Kikuchi, H. Sato, G.-q. Zheng

  2008, J. Phys. Soc. Jpn., 77(Suppl. A) (Suppl. A), 330 - 332


• 21aPS-109 Powder x-ray diffraction study of LiV_2O_4 under high pressure and low temperature

  Takeda K., Hidaka H., Hori A., Kotegawa H., Kobayashi T.C., Miyoshi K., Fujiwara K., Takeuchi J., Ohishi Y.

  The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 542 - 542, Japanese


• 21pPSB-4 Sb-NQR study of PrOs_4Sb_<12> under pressure III

  Katayama K., Kawasaki S., Zheng G. -q., Kotegawa H., Kobayashi T. C., Sugawara H., Kikuchi D., Sato H.

  The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 573 - 573, Japanese


• 21pXA-2 Low-energy spin fluctuations of the ferromagnetic heavy fermion YbPdCu_4

  Yokoyama T., Yamamoto A., Wada S., Tabira K., Kotegawa H., Kobayashi T. C., Sarrao J. L.

  The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 558 - 558, Japanese


• 21pXA-3 Quantum criticality associated with the valence fluctuation in YbAuCu_4

  Yamamoto A, Yokoyama T, Wada S, Nakai Y, Ihara Y, Ishida K, Tabira K, Kotegawa H, Kobayashi T. C, Sarrao J. L

  The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), Japanese


• 18pWK-6 Cu-NQR/NMR Study in CeCu_2Si_2 under high pressure

  Fujiwara K., Tatsumi T., Kotegawa H., Kobayashi T. C., Kitaoka Y., Geibel C., Steglioh F.

  The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 505 - 505, Japanese


• 20pWP-13 Superconducting Phase-Diagram under Pressure in CeRh_<1-x>Ir_xIn_5

  Wada N., Kotegawa H., Fukushima S., Hidaka H., Kobayashi T. C., Shishido H., Settai R., Onuki Y.

  The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 634 - 634, Japanese


• SmOs₄Sb₁₂における高圧下磁化,比熱測定

  田平景輔, 日高宏之, 小手川恒, 小林達生, 菊池大輔, 田中謙弥, 菅原仁, 佐藤英行

  2007, 日本物理学会講演概要集, 62(2) (2)


• スクッテルダイト化合物におけるNQRによる電荷揺らぎの観測

  入江祐太, 小手川恒, 日高宏之, 小林達生, 菊池大輔, 菅原仁, 佐藤英行

  2007, 日本物理学会講演概要集, 62(2) (2)


• Pr(Fe_0.95Ru_0.05)₄P₁₂の高圧下電気抵抗及び交流帯磁率測定

  日高宏之, 戸田洋平, 小手川恒, 小林達生, 本村瑶子, 青木勇二, 菊地大輔, 佐藤英行

  2007, 日本物理学会講演概要集, 62(2) (2)


• UIrにおける圧力誘起一次相転移と超伝導の関係

  小手川恒, 堀彰宏, 入江祐太, 日高宏之, 小林達生, 赤澤輝彦, 山本悦嗣, 池田修悟, 芳賀芳範, 大貫惇睦, 大貫惇睦

  2007, 日本物理学会講演概要集, 62(2) (2)


• 21pPSB-10 Magnetization and specific heat measurements at high pressures in SmOs_4Sb_<12>

  Tabira K, Hidaka H, Kotegawa H, Kobayasi T. C, Kikuti D, Tanaka K, Sugawara H, Sato H

  The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), Japanese


• 22pXA-14 Relationship between pressure-induced 1st order phase transition and superconductivity

  Kotegawa E, Onuki Y, Hori A, Irie Y, Hidaka H, Kobayashi T. C, Akazawa T, Yamamoto E, Ikeda S, Haga Y

  The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), Japanese


• 21aWK-2 ^<121,123>Sb-NQR study in SmOs_4Sb_<12>

  Kotegawa H, Hidaka H, Irie Y, Kobayashi T. C, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), Japanese


• 18pPSB-7 Coexistence of ferromagnetism and superconductivity in UIr : AC-susceptibility measurement under high pressure

  Fukushima S, Kotegawa H, Hidaka H, Kobayashi T.C, Akazawa T, Yamamoto E, Ikeda S, Haga Y, Onuki Y

  The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), Japanese


• 18pPSB-6 Anomalous enhancement of residual resistivity in pressure-induced superconductor UIr

  Hori A, Hidaka H, Kotegawa H, Kobayashi T. C, Akazawa T, Ikeda S, Haga Y, Yamamoto E, Onuki Y

  The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), Japanese


• 18pPSB-5 Pressure dependence of Electrical Resistivity in UIr

  Akazawa T, Onuki Y, Hidaka H, Kotegawa H, Fukushima S, Hori A, Kobayashi T. C, Yamamoto E, Haga Y, Settai R

  The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), Japanese


• 21aXA-1 Electrical resistivity and AC-susceptibility measurements on Pr(Fe_<0.95>Ru_<0.05>)_4P_<12> under high pressure

  Hidaka H, Toda Y, Kotegawa H, Kobayashi T. C, Motomura Y, Aoki Y, Kikuchi D, Sato H

  The Physical Society of Japan, 2007, Meeting Abstracts of the Physical Society of Japan, 62(0) (0), Japanese


• Powder X-ray diffraction under pressure in LiV2O4

  T.C. Kobayashi, H. Kotegawa, H. Hidaka, K. Takeda, Y. Ooishi

  2007, SPring-8 User Experiment Report, (2007A)


• X-ray diffraction underhigh pressure in UIr

  T.C. Kobayashi, H. Kotegawa, K. Tabira, K. Takeda, Y. Ooishi, T. Akazawa

  2007, SPring-8 User Experiment Report, (2007B)


• Connection between charge fluctuations and the coherent temperature in the heavy-fermion system SmOs4Sb12: A 121,123Sb-NQR study

  H. Kotegawa, H. Hidaka, T. C. Kobayashi, D. Kikuchi, H. Sugawara, H. Sato

  2007, Phys. Rev. Lett., 99, 156408-1-156408-4


• 73Ge-NQR study of heavy-fermion compound CeNi2Ge2

  S. Kawasaki, T. Sada, T. Miyoshi, H. Kotegawa, H. Mukuda, Y. Kitaoka, T.C. Kobayashi, T. Fukuhara, K. Maezawa, K.M. Itoh, E. E. Haller

  2007, J. Magn. Magn. Mater., 310, 590 - 592


• Effect of uniaxial stress on pressure-induced metal-insulator transition in PrFe4P12

  H. Hidaka, N. Wada, H. Kotegawa, T. C. Kobayashi, D. Kikuchi, H. Sato, H. Sugawa

  2007, J. Magn. Magn. Mater., 310, e228-e230


• Pressure-temperature phase diagram and superconductivity in UIr

  T. C. Kobayashi, A. Hori, S. Fukushima, H. Hidaka, H. Kotegawa, T. Akazawa, K. Takeda, Y. Ohishi, E. Yamamoto

  2007, J. Phys. Soc. Jpn., 76, 51007-1 -51007-11


• Nonmagnetic indenter-type high-pressure cell for magnetic measurements

  T. C. Kobayashi, H. Hidaka, H. Kotegawa, K. Fujiwara, M. I. Eremets

  2007, Rev. Sci. Instrum., 78, 23909-1-23909-5


• 23pPSA-52 Superconducting Phase-Diagram under Pressure in CeRh_<1-x>Ir_xIn_5

  Wada N., Kotegawa H., Hidaka H., Kobayashi T.C., Shishido H., Settai R., Onuki Y.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 418 - 418, Japanese


• Pressure effect on heavy fermion compound YbCu5

  T Mito, M Nakamura, M Shimoide, M Otani, T Koyama, S Wada, H Kotegawa, TC Kobarashi, B Idzikowski, M Reiffers, JL Sarrao

  May 2006, PHYSICA B-CONDENSED MATTER, 378-80, 732 - 733, English


• 29pPSA-18 Pressure effect on YbPd_2Si_2_and YbCu_5

  Miki T., Kotegawa H., Kobayashi T.C., Sugawara H., Mito T., Wada S., Reiffers M., Idzikowski B.

  The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 632 - 632, Japanese


• PrFe₄P₁₂の圧力誘起金属-絶縁体転移

  小林達生, 日高宏之, 和田直希, 小手川恒, 菊地大輔, 佐藤英行, 菅原仁

  2006, 高圧討論会講演要旨集, 47th


• 24pYA-3 Pressure-induced superconductivity in a ferromagnet UIr

  Kobayashi T.C, Haga Y, Onuki Y, Hori A, Fukushima S, Hidaka H, Kotegawa H, Akazawa T, Settai R, Ikeda S, Yamamoto E

  The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), Japanese


• 27aUB-5 Sb-NQR study in SmOs_4Sb_<12>

  Kotegawa H, Hidaka H, Kobayashi T.C, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), Japanese


• 27aPS-7 Coexistence of ferromagnetism and superconductivity in UIr : AC-susceptibility measurement under high pressure

  Fukushima S, Kotegawa H, Hidaka H, Kobayashi T.C, Akazawa T, Ikeda S, Yamamoto E, Haga Y, Onuki Y

  The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), Japanese


• 25pYA-1 ^<121,123>Sb-NMR/NQR study in SmOs_4Sb_<12>

  Kotegawa H, Hidaka H, Kobayashi T.C, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), Japanese


• 25aYA-3 A study of the pressure-induced insulating phase on PrFe_4P_<12>

  Hidaka H, Wada N, Kotegawa H, Kobayashi T.C, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2006, Meeting Abstracts of the Physical Society of Japan, 61(0) (0), Japanese


• Transport and magnetic properties of pressure-induced insulating phase in PrFe4P12

  H. Hidaka, H. Kotegawa, S. Fukushima, T. C. Kobayashi, H. Harima, K. Fujiwara, D. Kikuchi, H. Sato, H. Sugawara, pages

  2006, J. Phys. Soc. Jpn.


• Pressure-induced superconductivity in CeNiGe3

  H. Kotegawa, T. Miyoshi, K. Takeda, S. Fukushima, H. Hidaka, K. Tabata, T. C. Kobayashi, M. Nakashima, A. Thamizhavel, R. Settai, Y. Onuki

  2006, Physica B


• Evidence for unconventional superconducting fluctuations in heavy-fermion compound CeNi2Ge2

  S. Kawasaki, T. Sada, T. Miyoshi, H. Kotegawa, H. Mukuda, Y. Kitaoka, T. C. Kobayashi, T. Fukuhara, K. Maezawa, K. M. Itoh, E. E. Haller

  2006, J. Phys. Soc. Jpn.


• Pressure-induced superconductivity emerging from an antiferromagnetic phase in CeNiGe3

  H. Kotegawa, K. Takeda, T. Miyoshi, S. Fukushima, H. Hidaka, T. C. Kobayashi, T. Akazawa, Y. Ohishi, M. Nakashima, A. Thamizhavel, R. Settai, Y. Onuki

  2006, J. Phys. Soc. Jpn., 75(04) (04), 044713-1-6


• Anisotropic behavior in resistivity of RAgSb2 (R = Ce, La)

  Y. Watanabe, Y. Inada, H. Hidaka, H. Kotegawa, T. C. Kobayashi, T. D. Matsuda, D. Aoki

  2006, PHYSICA B-CONDENSED MATTER, 378-80, 827 - 828, English


• Cooperative Phenomenon of Ferromagnetism and Unconventional Superconductivity in UGe$_2$: A ^73^Ge-NQR Study under Pressure

  Atsushi Harada, Shinji Kawasaki, Hisashi Kotegawa, Yoshio Kitaoka, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki, Kouhei Itoh, Eugene Haller, Hisatomo Harima

  We report on a cooperative phenomenon of ferromagnetism and unconventional
  superconductivity (SC) in UGe$_2$ through the measurements of $^{73}$Ge
  nuclear-quadrupole-resonance (NQR) under pressure ($P$). The NQR spectra
  evidenced phase separation into ferromagnetic and paramagnetic phases in the
  vicinity of $P_c\sim 1.5$ GPa, pointing to a first-order transition. The
  measurements of nuclear-spin-lattice-relaxation-rate $1/T_1$ revealed that SC
  emerges under the background of ferromagnetism, but not of the paramagnetic
  phase.

  30 Aug. 2005, J. Phys. Soc. Jpn. 74, 2675 (2005).

  Technical report


• 20aYG-6 Cu-NQR Study in CeCu_2Si_2 under high pressure

  Fujiwara K., Tatsumi T., Kotegawa H., Kobayashi T. C., Kitaoka Y., Geibel C., Steglich F.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 421 - 421, Japanese


• 20aYG-3 Superconductivity in antifferomagnetic state of CeNiGe_3

  Miyoshi T., Takeda K., Fukushima S., Hidaka H., Kotegawa H., Kobayashi T., Tabata K., Nakashima M., Thamizhavel A., Settai R., Onuki Y.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 420 - 420, Japanese


• 19aPS-15 Pressure effect on YbPd_2Si_2 and YbCu_5

  Miki T., Kotegawa H., Kobayashi T. C., Sugawara H., Mito T., Wada S., Reiffers M., Idzikowski B.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 372 - 372, Japanese


• Pressure-induced charge ordering of LiV2O4

  K. Takeda, H. Hidaka, H. Kotegawa, T. C. Kobayashi, K. Shimizu, H. Harima, K. Fujiwara, K. Miyoshi, J. Takeuchi, Y. Ohishi, T. Adachi, M. Takata, E. Nishibori, M. Sakata, T. Watanuki, O. Shimomura

  30 Apr. 2005, Physica B: Condensed Matter, 359-361, 1312 - 1314


• In-115-NQR study of antiferromagnetism and superconductivity near magnetic criticality in CeIn3

  S Kawasaki, T Mito, Y Kawasaki, H Kotegawa, GQ Zheng, Y Kitaoka, H Shishido, S Araki, R Settai, Y Onuki

  Apr. 2005, PHYSICA B-CONDENSED MATTER, 359, 413 - 415, English


• Pressure-induced superconductivity in UIr without inversion symmetry

  T Akazawa, H Hidaka, H Kotegawa, TC Kobayashi, T Fujiwara, E Yamamoto, Y Haga, R Settai, Y Onuki

  Apr. 2005, PHYSICA B-CONDENSED MATTER, 359, 1138 - 1140, English


• 27aWE-2 NMR study of YbCu5 under high pressure

  M. Reiffers, B. Idzikowski

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 602 - 602, Japanese


• 27pWA-2 ^<73>Ge-NQR Study of UGe_2 under pressure

  Harada A., Kawasaki S., Kotegawa H., Kitaoka Y., Yamamoto E., Haga Y., Onuki Y., Itoh K., Haller E., Harima H.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 612 - 612, 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


• 24aTA-4 Pressure-induced superconductivity in CeNiGe_3

  Thamizhavel A.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 484 - 484, Japanese


• 25aPS-63 Anisotropy on RAgSb_2(R=Ce,La)

  Watanabe Y, Inada Y, Hidaka H, Kotegawa H, Kobayashi T.C, Matsuda T.D, Aoki D

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 537, Japanese


• 25aPS-7 Powder X-ray Diffraction Study on UIr under Quasi-Hydrostatic Pressure

  Akazawa T, Haga Y, Settai R, Onuki Y, Hidaka H, Takeda K, Kotegawa H, Fukushima S, Hori A, Kobayashi T. C, Ohishi Y, Yamamoto E

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• 25aPS-8 AC-Susceptlbility on Ferromagnetic Superconductor UIr without Inversion Symmetry

  Fukushima S, Kotegawa H, Hidaka H, Kobayashi T.C, Akazawa T, Ikeda S, Haga Y, Yamamoto E, Onuki Y

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• 25aPS-9 Anisotropy on electrical conduction under high pressure in UIr

  Hori A, Hidaka H, Kotegawa H, Kobayashi T. C, Akazawa T, IkedaS, Haga Y, Yamamoto E, Onuki Y

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• 25aPS-27 Hall effect in the pressure-induced insulating state of PrFe_4P_<12>

  Hidaka H, Hori A, Kotegawa H, Kobayashi T. C, Harima H, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• 25pTA-11 ^<31>P-NMR Study on Pressure Induced Insulating State in PrFe_4P_<12>

  Kotegawa H, Shimaoka Y, Hidaka H, Miki T, Kobayashi T, Fujiwara K, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• 22aXD-8 Anisotropy on electrical conduction for multi-ferromagnetic phases under high pressure In UIr

  Hori A, Hidaka H, Kotegawa H, Kobayashi T. C, Akazawa T, Ikeda S, Haga Y, Yamamoto E, Onuki Y

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• 22aXD-9 Coexistence of ferromagnetism and superconductivity In UIr : AC-susceptibility measurement under high pressure

  Fukushima S, Kotegawa H, Hidaka H, Kobayashi T. C, Akazawa T, Ikeda S, Haga Y, Yamamoto E, Onuki Y

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• 22aYG-7 A study of the pressure-induced insulating phase in PrFe_4P_<12>

  Hidaka H, Fukushima S, Hori A, Kotegawa H, Kobayashi T. C, Fujiwara K, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60(0) (0), Japanese


• UIrの圧力誘起超伝導

  小林達生, 日高宏之, 福島賢, 小手川恒, 赤澤輝彦, 摂待力生, 大貫惇睦, 山本悦嗣, 芳賀芳範

  2005, 固体物理, 40, 415-420


• Heavy fermion compound SmOs4Sb12 in the vicinity of ferromagnetic critical point

  H. Kotegawa, H. Hidaka, Y. Shimaoka, T. Miki, T. C. Kobayashi, D. Kikuchi, H. Sugawara, H. Sato

  2005, J. Phys. Soc. Jpn.


• Metal-insulator transition under high pressure in PrFe4P12

  H. Hidaka, I. Ando, H. Kotegawa, T. C. Kobayashi, H. Harima, M. Kobayashi, H. Sugawara, H. Sato

  2005, Physica B


• Pressure-induced metal-insulator transition in the filled skutterudite PrFe4P12

  H. Hidaka, I. Ando, H. Kotegawa, T. C. Kobayashi, H. Harima, M. Kobayashi, H. Sugawara, H. Sato

  2005, Phys. Rev. B


• 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


• 13aRD-12 Cu-NQR study in CeCu_2Si_2 under high pressure

  Shimaoka Y, Kotegawa H, Kobayashi T, Fujiwara K, Kitaoka Y, Geibel C, Steglich F

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 457 - 457, Japanese


• Coexistence of antiferromagnetic order and superconductivity in five-layered Hg-based high-T-c cuprate

  H Kotegawa, Y Kitaoka, Y Araki, Y Tokunaga, GQ Zheng, K Tokiwa, T Watanabe, A Iyo, H Kito, Y Tanaka, H Ihara

  Aug. 2004, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 408, 761 - 763, English


• New superconducting and magnetic phases emerge on the magnetic criticality in CeIn3

  S Kawasaki, T Mito, Y Kawasaki, H Kotegawa, GQ Zheng, Y Kitaoka, H Shishido, S Araki, R Settai, Y Onuki

  Jul. 2004, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(7) (7), 1647 - 1650, English


• The microscopic coexistence of superconductivityand ferromagnetism in UGe2: Ge-73-NMR/NQR study

  H. Kotegawa, S. Kawasaki, A. Harada, Y. Kawasaki, K. Okamoto, G. -q. Zheng, Y. Kitaoka, E. Yamamoto, Y. Haga, Y. Onuki, K. M. Itoh, E. E. Haller

  May 2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, E27 - E28, English


• 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


• 30pXE-1 Magnetic fluctuations in Skutterite compound PrFe_4P_<12> Revealed by ^<31>P-NMR Study

  Ishida K, Murakawa H, Kitagawa K, Kotegawa H, Kitaoka Y, Matsuda T, Sugawara H, Sato H, Young Ben-Li, MacLaughlin D. E, Harima H

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), Japanese


• Coexistence of superconductivity and antiferromagnetism in multilayered high-T-c superconductor HgBa2Ca4Cu5Oy: Cu-NMR study

  H Kotegawa, Y Tokunaga, Y Araki, GQ Zheng, Y Kitaoka, K Tokiwa, K Ito, T Watanabe, A Iyo, Y Tanaka, H Ihara

  Jan. 2004, PHYSICAL REVIEW B, 69(1) (1), 014501-, English


• 14pPSA-74 Pressure effect on SmOs_4Sb_12

  Kotegawa H, Miki T, Hidaka H, Kobayashi T C, Kikuchi D, Sugawara H, Sato H

  The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59(0) (0), Japanese


• 15aRD-4 Superconductivity around a ferromagnetic quantum critical point in UIr without inversion symmetry

  Akazawa T, Hidaka H, Kotegawa H, Kobayashi T C, Yamamoto E, Haga Y, Settai R, Onuki Y

  The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59(0) (0), Japanese


• 15aRD-5 Magnetization measurement of UIr under high pressure

  Hidaka H, Akazawa T, Kotegawa H, Kobayashi T C, Yamamoto E, Haga Y, Settai R, Onuki Y

  The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59(0) (0), Japanese


• 14pPSA-35 AC-Susceptibility on Ferromagnetic Superconductor Ulr without inversion Symmetry

  Kotegawa H, Fukushima S, Hidaka H, Kobayashi T C, Akazawa T, Haga Y, Yamamoto E, Onuki Y

  The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59(0) (0), Japanese


• 14pPSA-59 Pressure-induced metal-insulator transition in PrFe_4P_<12> II

  Hidaka H, Hori A, Kotegawa H, Kobayashi T C, Harima H, Kobayashi M, Sugawara H, Sato H

  The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59(0) (0), Japanese


• 28pPSA-34 Pressure-induced metal-insulator transition in the filled skutterudite PrFe_4P_<12>

  Hidaka H, Kotegawa H, Kobayashi T. C, Ando I, Harima H, Kobayashi M, Sugawara H, Sato H

  The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59(0) (0), Japanese


• NMR/NQR Study of PrOs_4Sb_<12>

  Imamura Y., Kotegawa H., Yogi M., Zheng G. q., Kitaoka Y., Saha S. R., Sugawara H., Sato H.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 458 - 458, Japanese


• Sb-NMR study of Pr_<0.95>La_<0.05>Os_4Sb_<12>

  Imamura Y., Kotegawa H., Yogi M., Zheng G. q., Kitaoka Y., Sugawara H., Sato H.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 457 - 457, Japanese


• NMR study of PrOs_4Sb_<12>

  Yogi M., Kotegawa H., Imamura Y., Kitaoka Y., Sugawara H., Sato H.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 549 - 549, Japanese


• Magnetic Properties of the Quadrupole Ordering System PrFe_4P_<12> : Revealed by ^<31>P-NMR Study

  Ishida K, Murakawa H, Kitagawa K, Kotegawa H, Kitaoka Y, Matsuda T, Sugawara H, Sato H, Young Ben Li, MacLaughlin D. E, Harima H

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), Japanese


• Microscopic coexistence of antiferromagnetism and superconductivity in HgBa2Ca4Cu5Oy : Cu-NMR study

  H Kotegawa, Y Tokunaga, Y Araki, GQ Zheng, Y Kitaoka, K Tokiwa, T Watanabe, A Iyo, H Kito, Y Tanaka, H Ihara

  May 2003, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 388, 237 - 238, English


• NQR study of CeOs_4Sb_<12>

  Yogi M., Kotegawa H., Imamura Y., Kitaoka Y., Ohsaki S., Sugawara H., Sato H.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 576 - 576, Japanese


• NQR Study of PrRu_4Sb_<12>,PrOs_4Sb_<12>

  Yogi M., Kotegawa H., Imamura Y., Zheng G. -q., Kitaoka Y., Ohsaki S., Sugawara H., Sato H.

  物性研究刊行会, 2003, 物性研究, 79(6) (6), 935 - 935, Japanese


• Evidence for strong-coupling s-wave superconductivity in MgB2: B-11-NMR study of MgB2 and the related materials

  H Kotegawa, K Ishida, Y Kitaoka, T Muranaka, N Nakagawa, H Takagiwa, J Akimitsu

  Oct. 2002, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 378, 25 - 32, English


• NMR Study on Coexsistence of Superconductivity and Ferromagnetism in 5 Layered TIBa2Ca4Cu5Oy

  Araki Y, Kotegawa H, Zheng G-q, Kitaoka Y, Kito H, Iyo A, Tanaka Y, Tokiwa K, Watanabe T, Ihara H

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 478 - 478, Japanese


• NQR study of PrT4Sb12 (T=Os,Ru)

  Yogi M, Kotegawa H, Imamura Y, Kitaoka Y, Ohsaki S, Sugawara H, Aoki Y, Sato H

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 466 - 466, Japanese


• 73Ge-NMR/NQR Study of UGe2 and URhGe

  Kotegawa H, Harada A, Kawasaki Y, Okamoto K, Kitaoka Y, Yamamoto E, Haga Y, Onuki Y, Itoh K

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 510 - 510, Japanese


• Superconducting and magnetic characteristics in the multilayered high-T-c cuprates TlBa2Ca2Cu3O10-y with T-c > 130 K probed by Cu and Tl NMR: High value for T-c

  H Kotegawa, Y Tokunaga, K Ishida, GQ Zheng, Y Kitaoka, A Iyo, Y Tanaka, H Ihara

  May 2002, PHYSICAL REVIEW B, 65(18) (18), 184504-1-184504-4, English


• NMR evidence for coexistence of superconductivity and ferromagnetic component in magnetic superconductor RuSr2YCu2O8: Ru-99,Ru-101 and Cu-63 NMR

  Y Tokunaga, H Kotegawa, K Ishida, Y Kitaoka, H Takagiwa, J Akimitsu

  Jun. 2001, PHYSICAL REVIEW LETTERS, 86(25) (25), 5767 - 5770, English


• Coexistance of superconductivity and ferromagnetic of (Ce_<1-x>Gd_x)Ru_2 II

  Okamoto K., Metoki N., Onuki Y., Kotegawa H., Obinata K., Mukuda H., Ishida K., Kitaoka Y., Haga Y., Matsuoka Y., Honma T.

  The Physical Society of Japan, 2000, Meeting Abstracts of the Physical Society of Japan, 55(0) (0), 506 - 506, Japanese


• 27aJ-10 NMR study of carrier distribution and superconductivity in multilayer cuprates

  Kotegawa H, Tokunaga Y, Ishida K, Zheng G.-q, Kitaoka Y, Asayama K, Tanaka K, Tokiwa K, Kito H, Iyo A, Ihara H

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 572 - 572, Japanese

• 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


• 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


• A15型超伝導体V3SiのSi-NMRによる研究

  野尻野旭, 森寛央, 川崎祐, 岸本豊, 中村浩一, 小山岳秀, 水戸毅, 八島光晴, 椋田秀和, 小手川恒, 菅原 仁

  日本物理学会第74回年次大会(2019年), Mar. 2019, Japanese, 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


• 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


• A15型超伝導体V3SiのSi-NMRによる研究

  森寛央, 野尻野旭, 川崎 祐, 岸本 豊, 中村 浩一, 小山 岳秀, 水戸 毅, 八島 光晴, 椋田 秀和, 小手川 恒, 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

  Poster 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


• Quantum criticality of antiferromagnet Mn3P under pressure

  KOTEGAWA Hisashi

  International Conference of Magnetism 2018, Jul. 2018, English, San Francisco, USA, International conference

  Poster presentation


• Quantum criticality of antiferromagnet Mn3P under pressure

  KOTEGAWA Hisashi

  J-Physics 2018: International Workshop on New Materials and Crystal Growth, Jun. 2018, English, Awaji, Hyogo, International conference

  [Invited]

  Nominated symposium


• 非共型ジグザグ構造における特異な量子相の解明と探索

  KOTEGAWA Hisashi

  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

  [Invited]

  Nominated symposium


• 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


• 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


• Exotic phase transitions in zig-zag structure: superconductivity in CrAs and metal-insulator transition in RuAs

  KOTEGAWA Hisashi

  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


• A15型超伝導体V3SiのSi-NMRによる研究II

  安藝 将也, 川崎 祐, 岸本 豊, 中村 浩一, 小山 岳秀, 水戸 毅, 八島 光晴, 椋田 秀和, 小手川 恒, 菅原 仁

  日本物理学会2017年秋季大会, Sep. 2017, Japanese, 岩手大学, Domestic conference

  Poster 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


• 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


• 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


• 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


• 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


• NQR

  小手川恒

  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


• 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


• A15型超伝導体V3SiのSi-NMRによる研究

  安藝 将也, 川崎 祐, 岸本 豊, 中村 浩一, 小山 岳秀, 水戸 毅, 八島 光晴, 椋田 秀和, 小手川 恒, 菅原 仁

  日本物理学会第72回年次大会, Mar. 2017, Japanese, 大阪大学, Domestic conference

  Poster presentation


• NMR/NQR and High-Pressure Transport Measurements on BiS2-Based Superconductors

  H. Kotegawa

  IWSRFM, Dec. 2016, English, NIMS, Tsukuba, 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


• Pressure-induced superconductivity and magnetic fluctuations in CrAs : comparison with Fe-based superconductors

  H. Kotegawa

  EMN meeting-Prague, Jun. 2016, English, Czech Republic, International conference

  [Invited]

  Invited oral presentation


• ヘリカル磁性体CrAsの圧力誘起超伝導と磁気相関

  小手川恒

  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


• Pressure-induced superconductivity and magnetic fluctuations in CrAs : comparison with Fe-based superconductors

  Hisashi Kotegawa

  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


• 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


• UGe2のNMR/NQR測定

  KOTEGAWA HISASHI

  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

  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


• 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


• 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


• 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


• 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, 小手川 恒, 藤 秀樹, 西脇 太平, 山内 良太, 松岡 英一, 菅原 仁

  日本物理学会第69回年次大会, Mar. 2014, Japanese, 東海大学, Domestic conference

  Oral presentation


• 圧力効果とNMRから見たBiS2系超伝導体

  小手川 恒

  新超伝導体研究会 （TMUNSC 2014）, Mar. 2014, Japanese, 首都大学東京, Domestic conference

  [Invited]

  Invited 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, 小手川 恒, 藤 秀樹, 山内 良太, 松岡 英一, 菅原 仁

  日本物理学会第69回年次大会, Mar. 2014, Japanese, 東海大学, Domestic conference

  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


• 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CeRuPOの温度-圧力-磁場の3次元相図の作成

  外山 智大, 小手川 恒, SUGAWARA HITOSHI, MATSUOKA EIICHI, 山内 良太

  日本物理学会2013年秋季大会, Sep. 2013, Japanese, 徳島大学, Domestic conference

  Poster 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


• NMR Investigation of Ferromagnetic Quantum Critical Endpoint in UCoAl

  Hisashi Kotegawa

  The IMR-ASRC 4th Reimei International Workshop 2013, Jul. 2013, English, いばらき量子ビーム研究センター, International conference

  [Invited]

  Invited oral 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


• 強相関電子系における圧力をパラメータとした新規量子相の研究

  小手川恒

  日本物理学会第68回年次大会, Mar. 2013, Japanese, 広島大学, Domestic conference

  [Invited]

  Invited 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


• 圧力効果とNMRから見たBiS2系超伝導体（BiS2 based superconductor investigated by pressure effect and NMR ）

  小手川 恒

  日本物理学会2013年第69回年次大会, Mar. 2013, Japanese, 東海大学, Domestic conference

  [Invited]

  Invited 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


• U系強磁性体のNMR測定 － UCoAl、URhGe、UGe2 －

  小手川 恒

  強相関f電子系研究会, 2013, Japanese, 琉球大学, Domestic conference

  [Invited]

  Invited oral 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


• 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 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による層状・籠状物質の低温量子状態の解明

  KOTEGAWA HISASHI

  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

  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


• NMRから見た超伝導～発展「様々な超伝導体に対するNMR」

  KOTEGAWA HISASHI

  重い電子系若手秋の学校, Sep. 2011, Japanese, 高野山学校, Domestic conference

  [Invited]

  Invited oral presentation


• NMR/NQR Study under Pressure on Ferromagnetic Criticality in LaFe4As12

  Hisashi Kotegawa

  From Blue Pigment to Green Energy Cobalt mines - Skutterudites – Thermoelectrics, Sep. 2011, English, Vikersund, Norway, International conference

  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


• Evolution toward Quantum Critical End Point in UGe2

  Hisashi Kotegawa

  International conference on strongly correlated electron system (SCES’11), Aug. 2011, English, Cambridge, UK, International conference

  Oral presentation


• UGe2の量子臨界終点：圧力下ホール効果測定

  KOTEGAWA HISASHI

  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（PS95), 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


• 層状ペロブスカイト型鉄系超伝導体の圧力効果

  KOTEGAWA HISASHI

  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７回領域会議, Jan. 2011, Japanese, 大阪大学大学院理学研究科, 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


• 高圧下におけるSmOs4Sb12の交流比熱測定

  川嵜 靖広, 宮澤 和己, 荒木 新吾, 池田 陽一, 小林 達生, KOTEGAWA HISASHI, SUGAWARA HITOSHI, 菊池 大輔, 佐藤 英行

  日本物理学会2018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


• 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


• Heat capacity measurement of SmOs4Sb12 under high pressure

  T.C. Kobayashi, Y. Kawasaki, K. Miyazawa, Y. Ikeda, S. Araki, H. Kotegawa, H. Sugawara, D. Kikuchi, H. Sato

  International Conference on Heavy Electrons (ICHE2010), Sep. 2010, English, K. Ueda, Tokyo, Japan, International conference

  Oral 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


• NMRによる層状・籠状物質の低温量子状態の解明

  KOTEGAWA HISASHI

  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６回領域会議, May 2010, Japanese, 名古屋大学, Domestic conference

  Oral 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


• 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


• UGe2の量子臨界終点：圧力下ホール効果測定

  KOTEGAWA HISASHI, Valentin Taufour, 青木 大, Georg Knebel, Jaqcues Flouquet

  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


• SmOs4Sb12の高圧下比熱測定

  宮澤 和己, 荒木 新吾, 小林 達生, KOTEGAWA HISASHI, 菊地 大輔, SUGAWARA HITOSHI, 佐藤 英行

  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


• 11 系および 21113 系鉄系超伝導体の圧力効果と NMR

  KOTEGAWA HISASHI

  新規材料による高温超伝導基盤技術 第３回領域会議, Dec. 2009, Japanese, 東京大学, Domestic conference

  Oral presentation


• 低温・高圧下における SrFe2As2 の粉末 X 線構造解析

  武田 圭生, KOTEGAWA HISASHI, 川添 隆行, 原 悠大, 松井 一樹, 関根 ちひろ, SUGAWARA HITOSHI, 大石 泰生

  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


• 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


• 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


• 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


• SmOs4Sb12 の NMR/NQR による研究

  KOTEGAWA HISASHI

  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


• Pressure-induced superconductivity in single crystalline SrFe2As2

  H. Kotegawa

  First Meeting of Scientific Research on Innovative Area“Heavy Electrons”, Mar. 2009, English, 東京大学, Domestic conference

  Poster 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


• Unconventional Superconductivity in FeSe: Pressure effect and 77Se-NMR

  H. Kotegawa

  Beijing International Workshop on Iron-(Nickel)-Based Superconductors, Oct. 2008, English, International 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


• 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

• Development of Novel Asymmetric Quantum Matters

  吉田 紘行, 芳賀 芳範, 松平 和之, 石渡 晋太郎, 小手川 恒

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Transformative Research Areas (A), Hokkaido University, 01 Apr. 2023 - 31 Mar. 2028


• Microscopic and systematic investigations for realization of ferromagnetic quantum critical point at zero field

  小手川 恒, 松岡 英一

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2021 - 31 Mar. 2024

  量子臨界点は絶対零度における2次相転移点であり，非従来型超伝導の出現など興味深い現象が起こる舞台として広く研究されている。一般に圧力などのパラメータで相転移点を下降させることが出来れば，量子臨界点を誘起させることが出来る。しかし，秩序相が強磁性である多くの場合，量子臨界点に至る過程で三重臨界点を持ち，転移が1次相転移に切り替わることが知られている。従来，その切り替わりの理由は電子の状態密度の構造に依るものとされてきたが，最近，その振舞は物質に依らず普遍的であるとの理論的な指摘があり，その真偽に注目が集まっている。 本研究ではゼロ磁場で強磁性量子臨界点を示す候補物質CeRh6Ge4の73Ge-NQR（核四重極共鳴法）を行った。CeRh6Ge4は約2.5 Kにキュリー点を持つ強磁性体であり，圧力印加と共に強磁性転移が2次転移的に消失するため，CeRh6Ge4には三重臨界点を避けるための要素が備わっていると考えられ注目を浴びている。ただし，強磁性体UCoGeもバルク測定では圧力下で2次相転移的に強磁性転移が消失するが，NQRで微視的に観測すると明確な1次相転移であることが分かっており，この判別には微視的測定が不可欠である。73Ge-NQRを行った結果，内部磁場の発達から確かにCeRh6Ge4の強磁性転移は微視的に見ても2次相転移であることが分かった。さらにその特徴は0.4 GPaの圧力下でも失われていなかった。 また，フェリ磁性体Ce5Ru3Ga2の試料作製・圧力印加実験を行った。フェリ磁性体も自発磁化を持つため，強磁性体と同様にゼロ磁場で量子臨界点を示さないと指摘されている。約1.7 Kの転移点は圧力印加と共に減少し，約0.4 GPaで磁気転移が消失することが明らかになった。 加えて，弱強磁性体NbMnPの磁気構造を共同研究者らと共に決定した。


• 非共型ジグザグ構造における特異な量子相の解明と探索

  小手川 恒

  科学研究費補助金／新学術領域研究, Apr. 2018 - Mar. 2020, Principal investigator

  Competitive research funding


• Cr系超伝導体の新奇超伝導状態の解明と探索

  小手川 恒

  科学研究費補助金／基盤研究(B), Apr. 2015 - Mar. 2018, Principal investigator

  Competitive research funding


• 非クラマース二重項結晶場基底状態をもつPr系化合物の量子多電子状態の微視的研究

  藤 秀樹

  学術研究助成基金助成金／基盤研究(C), Apr. 2014 - Mar. 2017

  Competitive research funding


• 強磁性の量子臨界終点における新しい量子状態の解明と探索

  小手川 恒

  科学研究費補助金／基盤研究(B), Apr. 2012 - Mar. 2015, Principal investigator

  Competitive research funding


• ＮＭＲによる層状・籠状物質の低温量子状態の解明

  小手川 恒

  科学研究費補助金／特定領域研究, 2010, Principal investigator

  Competitive research funding


• 非クラマース結晶場基底状態をもつ重い電子化合物の高磁場ＮＭＲによる研究

  藤 秀樹

  科学研究費補助金／基盤研究(B), 2010

  Competitive research funding


• 新型圧力セルを用いた高圧・低温量子状態の研究

  小手川 恒

  科学研究費補助金／若手研究(B), 2010, Principal investigator

  Competitive research funding


• Superconducting characteristics and pairing symmetry in uranium based heavy fermion superconductors studied by nuclear magnetic resonance

  TOU Hideki, SERA Masafumi, KOTEGAWA Hisashi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), 2006 - 2009

  ^9Be Nuclear Magnetic Resonance (NMR) measurements were carried out for a single crystal UBe_<13> in order to clarify its mechanism of superconductivity. From the field-angle-dependence of ^9Be NMR measurements, the Be 2p orbital perpendicular to the mirror plane contributes mainly to the conduction band. In the superconducting state, we found that ^9Be-NMR Knight shift for H||[001] does not change at all. This result is consistent with the spin-triplet pairing state in UBe_<13>. In addition, unusual behavior observed in RF surface impedance measurements suggest that UBe_<13> has multiple superconducting phases.


• ４ＧＰa超級高圧セルを用いたＮＭＲによる圧力誘起量子相の研究

  小手川 恒

  科学研究費補助金／若手研究(B), 2008, Principal investigator

  Competitive research funding


• 低温NMR用6GPa級高圧セルの開発

  小手川 恒

  日本学術振興会, 科学研究費助成事業, 若手研究(B), 岡山大学, 2006 - 2007

  本研究課題では小型・非磁性・大容量のNMR用高圧セルの開発を目的とした.従来用いられるピストンシリンダー型圧力セルは試料容積が100mm^3と大きいが,到達圧力が約3GPa程度と低い.より高圧用に設計されたインデンター型高圧セルは到達圧力が4.5GPaと高くなるが,試料容積が2mm^3と非常に小さい.そこで,インデンター型高圧セルの大型化のため改良を行った結果,現状で12mm^3の試料容積を持ち到達圧力が4.1GPa以上の高圧セルの開発に成功した.具体的には低荷重での圧力発生効率を上げるためインデンターのアンビル角を90度から60度に変更している. この新型セルを希釈冷凍機に取り付け,重い電子系超伝導体CeCu_2Si_2の高圧下NQR測定を行った.大きな試料容積を反映して,従来のインデンター型圧カセルの使用時に比べて大幅なS/N比の向上が見られ,非常に質の高いデータを得ることに成功した.CeCu_2Si_2の高圧下超伝導の起源は従来の磁気揺らぎではなくCeの価数揺らぎであるとの理論的示唆があるが,本測定により高圧の超伝導状態がラインノードの超伝導ギャップを持つことが明らかになった.(K.Fujiwara et aL,論文投稿準備中) 今後,アンビル角の調整により更なる性能の向上も期待できる.また,従来のインデンター型高圧セルでのNMR/NQR測定は信号が小さいため,限られた試料でしか測定出来ずあまり汎用的では無かったが,新型セルを用いることによって多くの試料での3GPa以上でのNMR/NQR測定が可能になると期待できる.


• PrFe4P12の圧力誘起金属-絶縁体転移の機構解明と新たな圧力誘起相の探索

  小手川 恒, 小林 達生, 藤原 賢二, 赤澤 輝彦

  日本学術振興会, 科学研究費助成事業, 特定領域研究, 岡山大学, 2006 - 2007

  PrFe_4P_<12>の圧力誘起金属-絶縁体転移の研究に引き続き,スクッテルダイト化合物の圧力誘起量子現象に関する研究を行った.SmOs_4Sb_<12>は磁場に鈍感な重い電子状態を持ち,その起源が従来の磁気的な近藤効果を通したものではなく,f電子の多極子モーメントの自由度やラットリングと呼ばれる格子の自由度が関連していると指摘されている.我々はこの物質の圧力効果に着目し,高圧下Sb-NQR測定を行った.その結果,近藤効果がコヒーレントになる特徴的な温度で核スピンースピン緩和率1/T_2に電荷揺らぎに起因した異常を発見した.この異常は0.8GPa程度で最も顕著になり,同じ圧力下で電気抵抗率に非フェルミ液体的振る舞いも観測されることが分かった.これらの結果は従来の磁気臨界点近傍の重い電子系物質では見られなかった振る舞いであり,SmOs_4Sb^<12>の重い電子状態に電気的な自由度が関与していることを強く示唆している.また.高圧下磁化測定,帯磁率測定も行った.SmOs_4Sb^<12>は常圧で約2.5Kのキュリー温度を持つ強磁性体と報告されているが.我々は高圧下で強磁性的な振る舞いは消え,自発磁化は約2 Gpaでほぼ消失することも明らかにした.このことは基底状態が単純な強磁性でないことを意味し、磁気モーメントとは別の秩序変数(多極子モーメント)の存在を示唆する.


• Anomalous Magnetic Properties of Molecular Oxygen Adsorbed in Microporous Metal-Organic Solids

  KOBAYASHI C. Tatsuo, KOTEGAWA Hisashi, KINDO Koichi, MITA Yoshimi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research on Priority Areas, Okayama University, 2004 - 2007

  Molecular oxygen forms 02-02 dimer in the coordination space of CPL-1 [Cu2(pzdc)2(pyz)]. It is found that the arrangement of 02 is associated not only with the interaction between the guest molecules and the host compound but also with the intermolecular interaction. The ab initio calculation of 02-02 dimer has pointed out that the magnetic interaction contributes to the formation of the H-structure alignment with singlet ground state (S = 0) while the most stable alignment of the quartet state (S = 2) is known to be different. Therefore we predicted the field-induced rearrangement in condensed 02 system in general. In this project, we have investigated the relation between the arrangement and the magnetic properties of 02 adsorbed in the coordination space by means of x-ray powder diffraction and magnetic measurements. In the case of CPL-1, the magnetization process and the temperature dependence of susceptibility can be interpreted by considering the excited state with different molecular arrangements. Similar magnetic properties have been observed in 02 adsorbed in Cu-CHD [Cu-1,4-cyclohexanedicarboxylic acid]. Though the MEM/Rietvelt analysis to determine the arrangement of adsorbed 02 is now in progress, the observed magnetic properties can be explained by same model. In CPL-p1 [Cu(dhba)2(4,4' -bpy)] and CID-4 [Cd(bpndc) (bpy)], the magnetization processes of adsorbed 02 show the metamagnetic transitions which depends on the adsorption. Though the arrangement of 02 is not clear, it is clear that the coordination spaces in these compounds are larger than that of CPL-1 or Cu-CHD. It is naturally considered that the existence of a few adsorption sites causes the adsorption dependence. Up to now the direct observation of field-induced rearrangement has not been succeeded. For CPL-1, the critical field is too high to carry out the XRD experiment. For Cu-CHD with lower critical field, the observation of field-induced rearrangement by XRD measurement is expected.


• PrFe_4P_<12>の圧力誘起金属-絶縁体転移の機構解明と新たな圧力誘起相の探索

  小林 達生, 小手川 恒, 赤澤 輝彦, 武田 圭生

  日本学術振興会, 科学研究費助成事業, 特定領域研究, 岡山大学, 2004 - 2005

  本研究では高圧下でスクッテルダイト構造を反映した特徴的な物性を探索し,その発現機構を明らかにすることを目的としている. 1.PrFe_4P_<12>の圧力誘起金属-絶縁体(M-I)転移 PrFe_4P_<12>の圧力誘起M-I転移の発見に引き続き,その起源解明に向けて磁化、ホール効果、NMR測定を行った.発見当初は低温の電気抵抗上昇の原因として磁気散乱の急激な増加の可能性も考えられたが,高圧下ホール効果測定を行い,バンド絶縁体状態が実現していることを見出した.また,高圧下NMR測定を行い金属状態から絶縁体状態への変化がクロスオーバー的な現象ではなく相転移であることを明らかにした.NMRスペクトルと磁化測定の結果から絶縁体相は約2μ_B程度の磁気モーメントを持つ反強磁性秩序相であることが分かった. 2.その他のスクッテルダイト化合物における新たな圧力誘起相の探索 PrFe_4Sb_<12>,PrOs_4Sb_<12>,PrOs_4P_<12>,NdFe_4P_<12>,NdOs_4Sb_<12>,NdRu_4Sb_<12>,SmOs_4Sb_<12>,LaFe_4P_<12>,LaRu_4P_<12>,LaFe_4Sb_<12>における4GPaまでの圧力効果を調べた.この中で圧力効果の大きかったものとして重い電子系物質SmOs_4Sb_<12>があげられる.常圧のSb-NQR測定において2Kの強磁性転移が本質的であることを明らかにしたが,この2Kのキュリー温度は加圧と共に急激に上昇していくことが分かった.つまり,SmOs_4Sb_<12>は常圧で強磁性臨界点の近傍に位置していることを意味している.このような系は過去にCe系,Yb系では報告があるが,Sm系では初めてである.また,このことが重い準粒子形成に大きく寄与していると考えられる.


• Development of NMR under high pressure and investigation of pressure-induced quantum fluctuation

  KOBAYASHI T.C., KOTEGAWA H., FUJIWARA K.

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Okayama University, 2003 - 2005

  This project aims at understanding the nature of pressure-induced quantum fluctuation by NMR measurement. In the case of conventional piston-cylinder high-pressure cell, the maximum pressure is limited as 2-3 GPa. In this project, we have developed "indenter cell" and then carried out successfully NMR measurement up to 5 GPa. Every one of following applications is first case of precise measurement in this pressure-range. 1.Pressure-induced enhancement of Tc in CeOu_2Si_2 It has been believed that the superconductivity at ambient pressure is mediated by spin fluctuation. It is found from Cu-NQR measurement that an application of pressure suppresses the spin fluctuation drastically in spite of Tc enhanced. The gapless superconductivity similar to ambient pressure occurs even at pressure where Tc is enhanced. 2.Pressure-induced metal-insulator transition in PrFe_4P_<12> The M-I transition has been found by our group. It is found from P-NMR measurement that the Pr moments order antiferromagnetically in the insulating phase and the M-I transition is of first order. 3.Pressure-induced metal-insulator transition in LiV_2O_4 As a result of Li-NMR measurement, it is found that the spin fluctuation is enhanced toward the appearance of M-I transition, suggesting that the magnetic instability may induce the M-I transition. We have found the novel pressure-induced superconductivity in following f-electron systems. UIr is first case of pressure-induced superconductivity in the ferromagnet without inversion symmetry. In CeNiGe_3, the superconductivity occurs in the pressure range far from the magnetic instability point.


• 二硼化マグネシウム及び多層型銅酸化物高温超伝導体の超伝導発現機構のNMRによる研究

  小手川 恒

  日本学術振興会, 科学研究費助成事業, 特別研究員奨励費, 2002 - 2003

  多層型銅酸化物高温超伝導体HgBa_2Ca_4Cu_5O_yにおいて、5枚のCuO_2面にうち外側の2枚のCuO_2面にはキャリアーとなるホールが適度に注入されており約108Kで超伝導を発現させるのに対し、内側の3枚のCuO_2面は非常にホール濃度が小さく約60Kで反強磁性磁気秩序を引き起こすことをNMR測定から明らかにした。また25K以下の低温では外側の超伝導CuO_2面にも小さいながらも約0.02μ_Bの磁気モーメントが存在していることが分かった。これは反強磁性の超伝導への近接効果が起こっていると考えられる。 さらに強磁性超伝導体UGe_2において高圧下NQR測定を行い、強磁性と超伝導が微視的に共存していることを明らかにした。また1.2GPaの圧力域での2つの強磁性相間の相転移は1次転移であることが明らかになり、この相転移に由来する量子揺らぎが超伝導を引き起こしているのではないと考えられる。1.2GPaから1.5GPaで見られる磁気モーメントの小さい強磁性相で見られるバルクのTc以下での核磁気緩和率の減少は、この相内に超伝導発現機構が存在していることを示している。