Research activity information

• Jun. 2021 日本赤外線学会, 第七回論文賞, NaCuMoO4(OH)の磁場中配向試料によるテラヘルツESR測定

  北原遥子, 原茂生, 櫻井敬博, 大久保晋, 太田仁, 木村史子, 木村恒久, 那波和宏, 岡本佳比古, 廣井善二

  Official journal


• 2016 日本赤外線学会, 論文賞, SQUID磁束計を用いたミリ波ESR測定装置の開発

  SAKURAI Takahiro, FUJIMOTO, OKUBO Susumu, OHTA Hitoshi

  Japan society


• 2011 日本物理学会, JPSJ Papers of Editor's Choice Vol.80 (2011) 083705, Electric Polarization Induced by Néel Order without Magnetic Superlattice: Experimental Study of Cu3Mo2O9 and Numerical Study of a Small Spin Cluster

  OHTA HITOSHI, OKUBO SUSUMU

  Official journal


• 2011 The Physcal Society of Japan, JPSJ Papers of Editor's Choice, Electric Polarization Induced by Néel Order without Magnetic Superlattice: Experimental Study of Cu3Mo2O9 and Numerical Study of a Small Spin Cluster

  Haruhiko Kuroe, Tomohiro Hosaka, Suguru Hachiuma, Tomoyuki Sekine, Masashi Hase, Kunihiko Oka, Toshimitsu Ito, Hiroshi Eisaki, Masashi Fujisawa, OKUBO Susumu, OHTA Hitoshi

  Official journal

• What is Multi-extreme THz ESR? Developments and its Applications

  H. Ohta, S. Okubo, E. Ohmichi, H. Takahashi, T. Sakurai

  Abstract This review explores the multi-extreme THz ESR system in Kobe, Japan, with a focus on pulsed magnetic fields, mechanical detection, and high pressure as central elements of multi-extreme THz ESR. Initially, it discusses the advantages of multi-frequency THz ESR using mini-pulsed and 55 T‒pulsed magnetic fields, with typical examples featuring the finite Haldane chain substance Y₂BaNi_0.96Mg_0.04O₅ and the deformed diamond chain antiferromagnet Cu₃(CO₃)₂(OH)₂ (Azurite). The measurement efficiency and the measurement beyond the magnetic phase transition, in contrast to the conventional superconducting magnet, are discussed. Second, the high sensitivity obtained from the use of a nano-membrane for mechanical detection is shown. Also shown are the high-temperature (280 K) THz ESR results for DPPH powder and a Cu(C₄H₄N₂)(NO₃)₂ (CuPzN) single crystal, with the combination of a nano-membrane device and a high-power source, a gyrotron. Finally, the high-pressure THz ESR results for KCuCl₃ using a transmission-type double-layered pressure cell are shown, along with the application of the thermally detected high-pressure THz ESR.

  Springer Science and Business Media LLC, Oct. 2024, Applied Magnetic Resonance

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Pressure Effect of Spin Gap Substance Cu₂(C₅H₁₂N₂)₂Cl₄

  Takahiro Sakurai, Ryosuke Takehara, Naoki Nagasawa, Hideyuki Takahashi, Makoto Saga, Kazuyuki Takahashi, Susumu Okubo, Hitoshi Ohta

  Journal of the Physical Society of Japan, May 2023, Proceedings of the 29th International Conference on Low Temperature Physics (LT29)

  International conference proceedings

  Link to Kobe Univ. Repository (Kernel)


• Maximum energy product of exchange-coupled Sm(FeCo)₁₂/α-Fe nanocomposite particle

  Ryusei Uda, Kunihiro Koike, Nobuyuki Inaba, Hiroaki Kato, Masaru Itakura, Susumu Okubo, Hitoshi Ohta, Hiroki Tsuchiura

  The effects of the coating surface orientation of the α-Fe soft magnetic layer on the Sm(Fe_0.8Co_0.2)₁₂ hard magnetic phase and the volume fraction of α-Fe, V_Fe, on the maximum energy product, ( BH)_max of exchange-coupled Sm(Fe_0.8Co_0.2)₁₂/α-Fe nanocomposite magnet particles were micromagnetics OOMMF package was systematically investigated. The ( BH)_max of the reference model, Sm(Fe_0.8Co_0.2)₁₂ particles without Fe layer, was 630 kJ/m³. In contrast, in the nanocomposite magnet particle model with soft magnetic layers on both sides of the hard magnetic phase, ( BH)_max reached a maximum value of 657 kJ/m³ at V_Fe = 12% (Fe layer thickness, t_Fe = 2 nm). In the model with α-Fe coating on the top and bottom surfaces of the hard magnetic phase, ( BH)_max = 636 kJ/m³ at V_Fe = 4% ( t_Fe = 2 nm). Furthermore, the coating of the soft magnetic phase on both sides of the hard phase particles reduces the magnitude of the demagnetizing field, H_d of the nanocomposite magnet particles, indicating that the side coating of the soft magnetic phase is effective in increasing ( BH)_max. These findings allow for a greater degree of freedom in the design of nanocomposite magnets by adjusting not only the V_Fe volume fraction of the hard/soft phases but also their arrangement.

  AIP Publishing, Feb. 2023, AIP Advances, 13(2) (2), 025311 - 025311, English

  Scientific journal


• Impact of mixed anion ordered state on the magnetic ground states of S=1/2 square-lattice quantum spin antiferromagnets, Sr2NiO3Cl and Sr2NiO3F

  Yoshihiro Tsujimoto, Jun Sugiyama, Masayuki Ochi, Kazuhiko Kuroki, Pascal Manuel, Dmitry D. Khalyavin, Izumi Umegaki, Martin Månsson, Daniel Andreica, Shigeo Hara, Takahiro Sakurai, Susumu Okubo, Hitoshi Ohta, Andrew Boothroyd, Kazunari Yamaura

  American Physical Society (APS), Nov. 2022, Physical Review Materials, 6(11) (11), 114404-1 - 114404-11, English

  [Refereed]

  Scientific journal


• Relief of spin frustration through magnetic anisotropy in the quasi-one-dimensional S= 12 antiferromagnet Na2CuSO4Cl2

  M. Fujihala, Y. Sakuma, S. Mitsuda, A. Nakao, K. Munakata, R. A. Mole, S. Yano, D. H. Yu, K. Takehana, Y. Imanaka, M. Akaki, S. Okubo, H. Ohta

  Apr. 2022, Physical Review B, 105(14) (14)

  Scientific journal


• Infrared laser annealing of nanocomposite Nd–Fe–B/Mo/FeCo multilayered magnet films

  Kunihiro Koike, Tokunosuke Uchida, Keiho Sakurai, Nobuyuki Inaba, Hiroaki Kato, Masaru Itakura, Shigeo Hara, Yu Saito, Susumu Okubo, Hitoshi Ohta

  {AIP} Publishing, Mar. 2022, AIP Advances, 12(3) (3), 035042 - 035042

  Scientific journal


• Continuous control of classical-quantum crossover by external high pressure in the coupled chain compound CsCuCl3

  Daisuke Yamamoto, Takahiro Sakurai, Ryosuke Okuto, Susumu Okubo, Hitoshi Ohta, Hidekazu Tanaka, Yoshiya Uwatoko

  In solid materials, the parameters relevant to quantum effects, such as the spin quantum number, are basically determined and fixed at the chemical synthesis, which makes it challenging to control the amount of quantum correlations. We propose and demonstrate a method for active control of the classical-quantum crossover in magnetic insulators by applying external pressure. As a concrete example, we perform high-field, high-pressure measurements on CsCuCl₃, which has the structure of weakly-coupled spin chains. The magnetization process experiences a continuous evolution from the semi-classical realm to the highly-quantum regime with increasing pressure. Based on the idea of "squashing” the spin chains onto a plane, we characterize the change in the quantum correlations by the change in the value of the local spin quantum number of an effective two-dimensional model. This opens a way to access the tunable classical-quantum crossover of two-dimensional spin systems by using alternative systems of coupled-chain compounds.

  Springer Science and Business Media LLC, Dec. 2021, Nature Communications, 12(1) (1)

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Development of Pressure Calibration Method in High-Pressure THz ESR System

  Takahiro Sakurai, Yoshimasa Yasutani, Hitoshi Sugawara, Susumu Okubo, Hitoshi Ohta

  Springer Science and Business Media LLC, Jul. 2021, Applied Magnetic Resonance

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Heavy Fermion Metal CeB6 in SubTHz and THz Range: The Electron Spin Resonance and Neutron Scattering Studies

  A. V. Semeno, S. Okubo, H. Ohta, S. V. Demishev

  Springer Science and Business Media LLC, Apr. 2021, Applied Magnetic Resonance, 52(4) (4), 459 - 472

  Scientific journal


• THz ESR Study of Peculiar Co Pyrochlore System GeCo2O4 Using Pulsed High Magnetic Field

  Susumu Okubo, Hitoshi Ohta, Tatsuya Ijima, Tatsuya Yamazaki, Wei-min Zhang, Shigeo Hara, Shinichi Ikeda, Hiroyuki Oshima, Miwako Takahashi, Keisuke Tomiyasu, Tadataka Watanabe

  Springer Science and Business Media LLC, Apr. 2021, Applied Magnetic Resonance, 52(4) (4), 411 - 424

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Effect of Mo monoatomic interlayer on magnetic properties of in-plane anisotropic Nd-Fe-B/Mo/FeCo nanocomposite multilayered films

  Kunihiro Koike, Kazuki Ohashi, Takuya Suzuki, Chihiro Okita, Nobuyuki Inaba, Hiroaki Kato, Masaru Itakura, Shigeo Hara, Yu Saito, Susumu Okubo, Hitoshi Ohta

  Jan. 2021, AIP Advances, 11(1) (1)

  Scientific journal


• Zero-Field Splitting Parameters of Hemin Investigated by High-Frequency and High-Pressure Electron Paramagnetic Resonance Spectroscopy

  Eiji Ohmichi, Tsubasa Okamoto, Takahiro Sakurai, Hideyuki Takahashi, Susumu Okubo, Hitoshi Ohta

  Springer Science and Business Media LLC, Oct. 2020, Applied Magnetic Resonance, 51(9-10) (9-10), 1103 - 1115

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Development of High-Field and High-Pressure ESR System and Application to Triangular Antiferromagnet CsCuCl3

  Ryosuke Okuto, Eito Ohki, Takahiro Sakurai, Keigo Hijii, Hideyuki Takahashi, Eiji Ohmichi, Susumu Okubo, Hitoshi Ohta, Yoshiya Uwatoko, Hidekazu Tanaka

  Sep. 2019, APPLIED MAGNETIC RESONANCE, 50(9) (9), 1059 - 1065, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Development of Eu²⁺ and Mn²⁺ co-activated silicate phosphor for plant cultivation light source

  Takashi Kunimoto, Yoshiko Fujita, Hiroshi Kajiyama, Tetsuo Honma, Hideki Kawaguchi, Tadashi Ishigaki, Koutoku Ohmi, Kentaro Ohshima, Daisuke Miyazaki, Yu Saito, Shigeo Hara, Takahiro Sakurai, Susumu Okubo, Hitoshi Ohta

  2019, Japanese Journal of Applied Physics, 58(SF) (SF)

  Scientific journal


• Recent Developments and Applications of Multi-Extreme THz ESR

  Hitoshi Ohta, Susumu Okubo, Eiji Ohmichi, Takahiro Sakurai, Hideyuki Takahashi, Shigeo Hara

  IEEE Computer Society, Oct. 2018, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 2018-, English

  International conference proceedings


• Submillimeter wave ESR measurements of S=1/2 distorted diamond chain system (Cu₃(OH)₂(CH₃CO₂)₂(H₂O)_xX_y) III

  Okubo S., Miyazaki D., Benzid K., Saito Y., Hara S., Sakurai T., Ohta H., Irizawa A., Fujita W.

  The Physical Society of Japan, 2018, Meeting Abstracts of the Physical Society of Japan, 73, 700 - 700, Japanese


• Development and application of 2.5 GPa–25 T high-pressure high-field electron spin resonance system using a cryogen-free superconducting magnet

  SAKURAI Takahiro, KIMURA S, KIMATA M, NOJIRI H, AWAJI S, OKUBO Susumu, OHTA Hitoshi, UWATOKO Y, KUDO K, KOIKE Y

  2018, J. Mag. Res., 296, 1 - 4, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Precise Determination of Zero-Field Splitting Parameters of Hemin by High-Field and High-Frequency Electron Paramagnetic Resonance

  Tsubasa Okamoto, Eiji Ohmichi, Susumu Okubo, Hitoshi Ohta

  Jan. 2018, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 87(1) (1), 013702/1 - 4, English

  [Refereed]

  Scientific journal


• Direct observation of the quantum phase transition of SrCu2(BO3)2 by high-pressure and terahertz electron spin resonance

  Takahiro Sakurai, Yuki Hirao, Keigo Hijii, Susumu Okubo, Hitoshi Ohta, Yoshiya Uwatoko, Kazutaka Kudo, Yoji Koike

  Physical Society of Japan, 2018, Journal of the Physical Society of Japan, 87(3) (3), 033701/1 - 4, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Multi-extreme THz ESR: Recent status and perspectives

  Hitoshi Ohta, Susumu Okubo, Eiji Ohmichi, Takahiro Sakurai, Hideyuki Takahashi, Shigeo Hara

  IEEE Computer Society, Oct. 2017, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, English

  [Refereed]

  International conference proceedings


• Spin-singlet transition in the magnetic hybrid compound from a spin-crossover Fe(III) cation and π-radical anion

  Kazuyuki Takahashi, Takahiro Sakurai, Wei-Min Zhang, Susumu Okubo, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Hatsumi Mori

  MDPI Multidisciplinary Digital Publishing Institute, Sep. 2017, Inorganics, 5(3) (3), 54 (14 pages), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• High-field/high-pressure ESR

  T. Sakurai, S. Okubo, H. Ohta

  Jul. 2017, JOURNAL OF MAGNETIC RESONANCE, 280, 3 - 9, English

  [Refereed]

  Scientific journal


• THz ESR study of Spinel Compound GeCo2O4

  Susumu Okubo, Hitoshi Ohta, Tatsuya Ijima, Tatsuya Yamasaki, Weimin Zhang, Shigeo Hara, Shinichi Ikeda, Hiroyuki Oshima, Miwako Takahashi, Keisuke Tomiyasu, Tadataka Watanabe

  Apr. 2017, ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 231(4) (4), 827 - 837, English

  [Refereed]

  Scientific journal


• Dzyaloshinsky-Moriya Interaction and the Ground State in S=3/2 Perfect Kagome Lattice Antiferromagnet KCr3(OH)(6)(SO4)(2) (Cr-Jarosite) Studied by X-Band and High-Frequency ESR

  Susumu Okubo, Ryohei Nakata, Shohei Ikeda, Naoki Takahashi, Takahiro Sakurai, Wei-Min Zhang, Hitoshi Ohta, Tokuro Shimokawa, Tru Sakai, Koji Okuta, Shigeo Hara, Hirohiko Sato

  Feb. 2017, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(2) (2), English

  [Refereed]

  Scientific journal


• ESR measurements of two-dimensional square lattice magnet Sr₂MnO₂Cl₂ 3

  Okubo Susumu, Takahashi Akihiko, Ohta Hitoshi, Sakurai Takahiro, Matsuoka Eiichi, Sugawara Hitoshi, Tsujimoto Yoshihiro, Yu Su, Yamaura Kazunari

  正方平面配位は低次元磁性の観点から注目されている。Sr_2_MnO_2_Cl_2_はO_4_が作る正方形の中心に磁性イオンMn^2+^が位置する正方平面配位の層状ペロブスカイト物質である。本研究の目的はSr_2_MnO_2_Cl_2_のESR測定を行い、スピンダイナミクスを明らかにすることである。今回の発表では、前回と異なる新合成された粉末試料と磁場中配向試料H//cについてESR測定を行い、得られた結果と詳細について報告する。

  The Physical Society of Japan, 2017, Meeting Abstracts of the Physical Society of Japan, 72, 1080 - 1080, Japanese


• Electron spin resonance studies of GaAs: Er,O

  H. Ohta, S. Okubo, Y. Fujiwara

  Feb. 2016, Rare Earth and Transition Metal Doping of Semiconductor Materials: Synthesis, Magnetic Properties and Room Temperature Spintronics, 169 - 194

  [Refereed]

  In book


• 20pBC-8 High Field ESR measurements of square lattice antiferromagnet Sr_2VO_4

  Morimitsu A., Okubo S., Sakurai T., Ohta H., Sakurai H.

  The Physical Society of Japan (JPS), 2016, Meeting Abstracts of the Physical Society of Japan, 71, 1204 - 1204, Japanese


• 20pBC-10 SrCu_2(BO_3)_2のテラヘルツ領域における圧力下ESR測定II

  平尾 祐樹, 櫻井 敬博, 太田 仁, 大久保 晋, 肘井 敬吾, 松林 和幸, 上床 美也, 工藤 一貴, 小池 洋二

  一般社団法人日本物理学会, 2016, 日本物理学会講演概要集, 71, 1206 - 1206, Japanese


• 19aPS-91 Development of high field ESR system under pressure up to 3 GPa

  Sakurai T., Hirao Y., Okubo S., Ohta H., Uwatoko Y.

  The Physical Society of Japan (JPS), 2016, Meeting Abstracts of the Physical Society of Japan, 71, 1096 - 1096, Japanese


• Development of high field and high pressure ESR system.

  Hirao Y., Ohki E., Sakurai T., Ohta H., Okubo S., Hiji K., Uwatoko Y., Kudo K., Koike Y., Nojiri H., Kimura S.

  我々はこれまで最大磁場10 Tの超伝導マグネットを用いた圧力下ESR装置を開発してきた。これらの開発をベースに現在、磁場領域を拡張するため、東北大金研が所有する最大磁場20 T、あるいは25 Tの超伝導マグネットを用いて圧力下ESR装置を開発中である。これにより前回報告したSrCu_2_(BO_3_)_2_のように、圧力下での物性が注目される物質について、より詳細な物性の解明が期待される。

  The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 818 - 818, Japanese


• High-field ESR measurements of magnetically aligned sample NaCuMoO₄(OH) III

  Okubo S., Kubota S., Kitahara Y., Hara S., Sakurai T., Ohta H., Yoshizawa D., Hagiwara M., Kimura F., Kimura T., Nawa K., Okamoto Y., Hiroi Z.

  S=1/2 1次元フラストレート磁性体では、飽和磁場近傍でスピンネマチック相と呼ばれる新規量子相が出現すると理論的に予測されている。NaCuMoO_4_(OH)は J_1_-J_2_(J_1_=-51K強磁性、J_2_=36K反強磁性)フラストレート磁性体の候補物質である。水熱合成では大型の単結晶試料を得るのが困難なので、粉末試料を磁場中配向させた試料で今回精査に強磁場ESRを行い、スピンネマチック相の検証を行った。

  The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 809 - 809, Japanese


• High pressure THz-ESR measurement of triangular antiferromagnet CsCuCl₃

  Sakurai T., Ohki E., Hirao Y., Okubo S., Ohta H., Uwatoko Y., Tanaka H., Sera A., Kousaka Y., Akimitsu J., Sera M., Inoue K.

  三角格子反強磁性体CsCuCl_3_は磁場中で量子相転移を生ずる物質として非常に注目を集めた物質である。最近、圧力下での磁化過程において1/3プラトーが見出され再び注目を集めている。我々はその詳細をミクロな観点から探ることを目的に、圧力下でESR測定を行っている。現在、圧力に伴う反強磁性ギャップの増大を観測し、これに寄与するいくつかの相互作用を分離して評価する試みを行っている。

  The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 846 - 846, Japanese


• ESR measurements of frustrated magnet K₂Mn₃(OH)₂(VO₄)₂

  Fujimoto M., Okubo S., Hara S., Sakurai T., Ohta H., Otsuka D., Sato H.

  K_2_Mn_3_(OH)_2_(VO_4_)_2_のESR測定を行った。この結晶は2次元格子であり、ダイヤモンド鎖とカゴメ格子に似た形の構造を持っていることからフラストレーションが期待されるMKS格子(Multi-Kagome-Strip lattice)である。また、この単結晶は3種類の交換相互作用のうち、2種の相互作用の強さによって様々な磁気相が存在すると期待され、この単結晶試料のx-bandESR測定をし、温度変化、角度依存性を測定した。磁気異方性について報告する予定である。

  The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 796 - 796, Japanese


• ESR measurements of two-dimensional square lattice magnet Sr₂MnO₂Cl₂

  Takahashi Akihiko, Okubo Susumu, Ohta Hitoshi, Sakurai Takahiro, Matsuoka Eiichi, Sugawara Hitoshi, Tsujimoto Yoshihiro, Yu Su, Yamaura Kazunari

  正方平面配位は低次元磁性の観点から注目されている。Sr_2_MnO_2_Cl_2_はO_4_が作る正方形の中心に磁性イオンMn^2+^が位置する正方平面配位の層状ペロブスカイト物質である。本研究の目的はSr_2_MnO_2_Cl_2_のESR測定を行い、スピンダイナミクスを明らかにすることである。前回の発表では、粉末試料と磁場中配向試料H//cについてESR測定を行い、約20K以下でg値のシフトから短距離秩序が形成されたことを発表した。今回は磁場中配向試料H//abのESR測定で得られた結果と詳細について報告する。

  The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 997 - 997, Japanese


• High Field ESR measurements of Multiferroic compound BiFe_1-xCo_xO₃II

  Morimitsu Arata, Okubo Susumu, Sakurai Takahiro, Hara Shigeo, Ohta Hitoshi, Yamamoto Hajime, Azuma Masaki

  BiFe_1-x_Co_x_O_3_は、ペロブスカイト型化合物である。x=1であるBiCoO_3_は圧力下でCo^2+^の電子状態が高スピン状態から低スピン状態に相転移することが知られている。CoをFeで置換したBiFe_1-x_Co_x_O_3_ではFeの置換割合が多くなるにつれCoのスピン状態が変化することが期待されている。そこで、Coの電子状態を明らかにする目的でBiFe_1-x_Co_x_O_3_の強磁場ESR測定を行った結果について発表する。

  The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 1847 - 1847, Japanese


• Magnetization and ESR studies on CoMoO₄

  Inagaki Yuji, Sakamoto Yasutaka, Yokoyama Daiki, Sakurai Takahiro, Okubo Susumu, Asano Takayuki, Kawae Tatsuya, Kikuchi Hikomitsu, Ohta Hitoshi

  表題の物質に関して、詳細な磁化測定と強磁場を含むESR測定の結果から、系の磁性に関する議論を行う。

  The Physical Society of Japan, 2016, Meeting Abstracts of the Physical Society of Japan, 71, 730 - 730, Japanese


• Multi-Extreme THz ESR: Recent Achievements in Kobe

  Hitoshi Ohta, Susumu Okubo, Eiji Ohmichi, Takahiro Sakurai, Hideyuki Takahashi, Shigeo Hara

  2016, 2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), English

  [Refereed]

  International conference proceedings


• Terahertz ESR Measurements of Magnetically Aligned NaCuMoO4(OH)

  KITAHARA Yoko, HARA Shigeo, SAKURAI Takahiroi, OKUBO Susumu, OHTA Hitoshi, KIMURA Fumiko, KIMURA Tsunehisa, NAWA Kazuhiro, OKAMTO Yoshihiko, HIROI Zenji

  2016, J. Jpn. Soc. Infrared Science & Technology, 26, 51 - 61, English

  [Refereed]

  Scientific journal


• Development of High-Pressure ESR System Using Micro-coil

  KAWASAKI Kohei, SAKURAI Takahiro, OHMICHI Eiji, OKUBO Susumu, OHTA Hitoshi, MATSUBAYASHi Kazuyuki, UWATOKO Yoshiya

  2016, Appl. Magn. Reson., 46(9) (9), 987 - 992, English

  [Refereed]

  Scientific journal


• Frequency Extension to the THz Range in the High Pressure ESR System and Its Application to the Shastry-Sutherland Model Compound SrCu2(BO3)(2)

  Hitoshi Ohta, Takahiro Sakurai, Ryosuke Matsui, Kohei Kawasaki, Yuki Hirao, Susumu Okubo, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Kazutaka Kudo, Yoji Koike

  Oct. 2015, JOURNAL OF PHYSICAL CHEMISTRY B, 119(43) (43), 13755 - 13761, English

  [Refereed]

  Scientific journal


• Development of multi-frequency ESR system for high-pressure measurements up to 2.5 GPa

  T. Sakurai, K. Fujimoto, R. Matsui, K. Kawasaki, S. Okubo, H. Ohta, K. Matsubayashi, Y. Uwatoko, H. Tanaka

  Oct. 2015, JOURNAL OF MAGNETIC RESONANCE, 259, 108 - 113, English

  [Refereed]

  Scientific journal


• Possible Singlet--Triplet Transition of ESR in the Kagome-Lattice Antiferromagnet

  Tru Sakai, Keigo Hijii, Susumu Okubo, Hitoshi Ohta, Hiroki Nakano, Seiji Miyashita

  Sep. 2015, APPLIED MAGNETIC RESONANCE, 46(9) (9), 997 - 1002, English

  [Refereed]

  Scientific journal


• High-field ESR Measurements of YCrO3

  Shohei Ikeda, Shigeo Hara, Takahiro Sakurai, Susumu Okubo, Hitoshi Ohta, Hiroya Sakurai

  Sep. 2015, APPLIED MAGNETIC RESONANCE, 46(9) (9), 1053 - 1058, English

  [Refereed]

  Scientific journal


• Development of High-Pressure and Multi-Frequency ESR System and Its Application to Quantum Spin System

  Takahiro Sakurai, Ryosuke Matsui, Kohei Kawasaki, Susumu Okubo, Hitoshi Ohta, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Kazutaka Kudo, Yoji Koike

  Sep. 2015, APPLIED MAGNETIC RESONANCE, 46(9) (9), 1007 - 1012, English

  [Refereed]

  Scientific journal


• 19aPS-63 High Field ESR measurements of Multiferroic compound BiFe_<1-x>Co_xO_3

  Morimitsu A., Okubo S., Sakurai T., Hara S., Ohta H., Yamamoto H., Azuma M.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 2155 - 2155, Japanese


• 16aPS-119 Sensitivity improvement and application of high pressure, high field and multifrequency ESR system III

  Sakurai T., Hirao Y., Okubo S., Ohta H., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 793 - 793, Japanese


• 17pCM-5 Singlet-Triplet Transitions of ESR in Gapped Spin Systems

  Sakai Toru, Hijii Keigo, Okubo Susumu, Ohta Hitoshi, Nakano Hiroki, Miyashita Seiji

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 897 - 897, Japanese


• 17pCM-4 High pressure ESR measurement of SrCu2(BO3)2 in THz region

  Hirao Y., Sakurai T., Ohta H., Okubo S., Hara S., Matsuoka E., Sugawara H., Matsubayashi K., Uwatoko Y., Kudo K., Koike Y.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 896 - 896, Japanese


• 17pCM-1 High field ESR measurements of frustrated 2 dimensional antiferromagnet ScCu_<2/3>V_<1/3>O_3 II

  Yoshida S., Hara S., Sakurai T., Okubo S., Ohta H., Alexei A. Belik

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 893 - 893, Japanese


• 16aPS-41 Investigation of Amplitude mode for dimer system NH4CuCl3by high frequency ESR

  Takahashi Akihiko, Okubo Susumu, Sakurai Takahiro, Hara Shigeo, Ohta Hitoshi, Tanaka Hidekazu

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 746 - 746, Japanese


• 16pCG-3 High-field ESR measurments of magnetically aligned sample NaCuMoO4(OH)

  Kitahara Y., Hara S., Sakurai T., Okubo S., Ohta H., Nawa K., Okamoto Y., Hiroi Z.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 803 - 803, Japanese


• 16pCG-5 Possible Ideal S=1/2 Heisenberg Ferromagnet for Natural Mineral Cavansite

  Okubo S., Kitahara Y., Mori Y., Hara S., Sakurai T., Takahashi K., Ohta H.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 805 - 805, Japanese


• 21pAH-5 High-frequency ESR measurements of YCrO_3 II

  Okubo S., Ikeda S., Hara S., Sakurai T., Ohta H., Sakurai Y.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1068 - 1068, Japanese


• 21pPSA-61 Sensitivity improvement and application of high pressure, high field and multifrequency ESR system II

  Sakurai T., Matsui R., Kawasaki K., Okubo S., Ohta H., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1130 - 1130, Japanese


• 22aBJ-3 High field ESR measurements of frustrated 2 dimensional antiferromagnet ScCu_<2/3>V_<1/3>O_3

  Yoshida S., Hara S., Sakurai T., Okubo S., Ohta H., Belik Alexei A.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1164 - 1164, Japanese


• 22aAH-2 High field ESR measurements of quasi one dimensional frustrated magnet NaCuMoO_4(OH) II

  Kitahara Y., Hara S., Sakurai T., Okubo S., Ohta H., Nawa K., Okamoto Y., Hiroi Z.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1151 - 1151, Japanese


• 23pBJ-9 Development and application of high pressure ESR system in THz region

  Kawasaki K., Matsui R., Sakurai T., Ohta H., Okubo S., Matsubayashi K., Uwatoko Y., Kudo K., Koike Y.

  The Physical Society of Japan (JPS), 2015, Meeting Abstracts of the Physical Society of Japan, 70, 1217 - 1217, Japanese


• Crystal structure and physical properties of Cr and Mn oxides with 3d(3) electronic configuration and a K2NiF4-type structure

  Ting-Hui Kao, Hiroya Sakurai, Taras Kolodiazhnyi, Yutaro Suzuki, Momoko Okabe, Toru Asaka, Koichiro Fukuda, Susumu Okubo, Shohei Ikeda, Shigeo Hara, Takahiro Sakurai, Hitoshi Ohta, Hung-Duen Yang

  2015, JOURNAL OF MATERIALS CHEMISTRY C, 3(14) (14), 3452 - 3459, English

  [Refereed]

  Scientific journal


• NaCuMoO4(OH) as a Candidate Frustrated J1-J2 Chain Quantum Magnet

  NAWA Kazuhiro, OKAMOTO Yoshihiko, MATSUO Akira, KINDO Koichi, KITAHARA Yoko, YOSHIDA Syota, IKEDA Shohei, HARA Shigeo, SAKURAI Takahiro, OKUBO Susumu, OHTA Hitoshi, HIROI Zenji

  2015, J. Phys. Soc. Jpn., 83, 103702/1 - 5, English

  [Refereed]

  Scientific journal


• Microscopic properties of degradation-free capped GdN thin films studied by electron spin resonance

  Tokuro Shimokawa, Yohei Fukuoka, Masashi Fujisawa, Weimin Zhang, Susumu Okubo, Takahiro Sakurai, Hitoshi Ohta, Reddithota Vidyasagar, Hiroaki Yoshitomi, Shinya Kitayama, Takashi Kita

  Jan. 2015, JOURNAL OF APPLIED PHYSICS, 117(4) (4), 043909, English

  [Refereed]

  Scientific journal


• NaCuMoO4(OH) as a Candidate Frustrated J(1)- J(2) Chain Quantum Magnet

  Kazuhiro Nawa, Yoshihiko Okamoto, Akira Matsuo, Koichi Kindo, Yoko Kitahara, Syota Yoshida, Shohei Ikeda, Shigeo Hara, Takahiro Sakurai, Susumu Okubo, Hitoshi Ohta, Zenji Hiroi

  Oct. 2014, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(10) (10), 103702/1 - 5, English

  [Refereed]

  Scientific journal


• Disappearance of Ising nature in Ca3ZnMnO6 studied by high-field ESR

  M. Y. Ruan, Z. W. Ouyang, Y. M. Guo, J. J. Cheng, Y. C. Sun, Z. C. Xia, G. H. Rao, S. Okubo, H. Ohta

  Jun. 2014, JOURNAL OF PHYSICS-CONDENSED MATTER, 26(23) (23), 236001/1 - 5, English

  [Refereed]

  Scientific journal


• Electron spin resonance study of Er-concentration effect in GaAs; Er, O containing charge carriers

  F. Elmasry, S. Okubo, H. Ohta, Y. Fujiwara

  May 2014, JOURNAL OF APPLIED PHYSICS, 115(19) (19), 193904/1 - 7, English

  [Refereed]

  Scientific journal


• Unusual Magnetic Phase Transition of 2D Kagom´e Compound Cu3(CO3)(bpe)3_2ClO4

  Hikomitsu Kikuchi, Yutaka Fujii, Hayato Nakata, Toshifumi Taniguchi, Weimin Zhang, Susumu Okubo, Hitoshi Ohta

  Mar. 2014, JPS Conf. Proc., 012019, English

  [Refereed]

  International conference proceedings


• THz ESR Study of Perfect Kagome Lattice Antiferromagnet Cr-Jarosite

  Hitoshi Ohta, Susumu Okubo, Ryohei Nakata, Shohei Ikeda, Naoki Takahasi, Takahiro Sakurai, Wei-min Zhang, Tokuro Shimokawa, Koji Okuta, Shigeo Hara, Hirohiko Sato

  2014, 2014 39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), English

  [Refereed]

  International conference proceedings


• Unusual Magnetic Phase Transition of 2D Kagom´e Compound Cu3(CO3)(bpe)3_2ClO4

  H Kikuchi, Y Fujii, H Nakata, T Taniguchi, W Zhang, S Okubo, H Ohta

  2014, JPS Conf. Proc, 3, 012019, English

  [Refereed]

  Scientific journal


• Ground state of the spin-1/2 chain of green dioptase at high fields

  K Matsui, M Fujisawa, K Hagiwara, Y Hoshino, T Goto, T Sasaki, H Tanaka, S Okubo, H Ohta

  2014, JPS Conf. Proc, 3, 014011/1 - 6, English

  [Refereed]

  Scientific journal


• Development of Hybrid-Type Pressure Cell for High-Pressure and High-Field ESR Measurement

  Kohdai Fujimoto, Takahiro Sakurai, Susumu Okubo, Hitoshi Ohta, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Kazutaka Kudo, Yoji Koike

  Aug. 2013, Applied Magnetic Resonance, 44(8) (8), 893 - 898, English

  [Refereed]

  Scientific journal


• Nonmagnetic impurity effect of the S=1/2 spin ladder system (pipdH)(2)Cu1-x Zn (x) Br-4

  Chiori Yokoyama, Eiichi Matsuoka, Hitoshi Sugawara, Takahiro Sakurai, Weimin Zhang, Susumu Okubo, Hitoshi Ohta, Hikomitsu Kikuchi

  Jul. 2013, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 62(12) (12), 2041 - 2045, English

  [Refereed]

  Scientific journal


• Antiferromagnetic ordering in Sr2CrO4.

  Malika Rani, Hiroya Sakurai, Susumu Okubo, Keisuke Takamoto, Ryohei Nakata, Takahiro Sakurai, Hitoshi Ohta, Akira Matsuo, Yoshimitsu Kohama, Koichi Kindo, Javed Ahmad

  The magnetic ground state of Sr2CrO4 with a distorted honeycomb lattice was investigated by means of measurements of the magnetic susceptibility, high-field magnetization process, and electron spin resonance (ESR). Antiferromagnetic ordering was observed clearly below TN = 3.2 K, while the magnetic ground state had been thought to be a spin-singlet state. A two-sublattice model with biaxial anisotropy was applicable for the observed ESR modes. Plateau-like behavior and a sharp kink were detected in the magnetization curve.

  Jun. 2013, Journal of physics. Condensed matter : an Institute of Physics journal, 25(22) (22), 226001 - 226001, English, International magazine

  [Refereed]

  Scientific journal


• Development of High-Field ESR System Using SQUID Magnetometer and its Application to Measurement under High Pressure

  T. Sakurai, K. Fujimoto, S. Okubo, H. Ohta, Y. Uwatoko

  Jun. 2013, JOURNAL OF MAGNETICS, 18(2) (2), 168 - 172, English

  [Refereed]

  Scientific journal


• Detailed impurity phase investigation by X-ray absorption fine structure and electron spin resonance analyses in synthesis of CaMgSi2O 6:Eu phosphor

  Takashi Kunimoto, Tetsuo Honma, Koutoku Ohmi, Susumu Okubo, Hitoshi Ohta

  Apr. 2013, Japanese Journal of Applied Physics, 52(4) (4), 1 - 7., English

  [Refereed]

  Scientific journal


• Detailed Impurity Phase Investigation by X-ray Absorption Fine Structure and Electron Spin Resonance Analyses in Synthesis of CaMgSi2O6:Eu Phosphor

  Takashi Kunimoto, Tetsuo Honma, Koutoku Ohmi, Susumu Okubo, Hitoshi Ohta

  Mar. 2013, Jpn. J. Applied Phys., 52, 042402/1 - 7, English

  [Refereed]

  Scientific journal


• Developments of Multi-Extreme THz ESR System and Its Application to Cr-Jarosite

  Hitoshi Ohta, Susumu Okubo, Takahiro Sakurai, Eiji Ohmichi, Weimin Zhang, Tokuro Shimokawa, Ryohei Nakata, Koji Okuta, Shigeo Hara, Hirohiko Sato

  2013, 2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), English

  [Refereed]

  International conference proceedings


• The effect of doping a molecular spin ladder with non-magnetic impurities

  S. Nishihara, X. Zhang, K. Kunishio, K. Inoue, X-M Ren, T. Akutagawa, J. Kishine, M. Fujisawa, A. Asakura, S. Okubo, H. Oh, T. Nakamura

  2013, Dalton Trans., 42(43) (43), 15263 - 15266, English

  [Refereed]

  Scientific journal


• Development of millimeter wave ESR system using SQUID magnetometer

  T. Sakurai, K. Fujimoto, S. Okubo, H. Ohta

  日本赤外線学会, 2013, J. Jpn. Soc. Infrared Science & Technology, 23(1) (1), 121 - 126, Japanese

  [Refereed][Invited]

  Scientific journal


• Developments of Multi-extreme High Field ESR in Kobe

  Hitoshi Ohta, Susumu Okubo, Eiji Ohmichi, SAKURAI Takahiro

  Jan. 2013, J. Low Temp Phys, 170, 511 - 519, English

  [Refereed]

  Scientific journal


• Development of high-pressure and high-field ESR system using SQUID magnetometer

  T. Sakurai, K. Fujimoto, R. Goto, S. Okubo, H. Ohta, Y. Uwatoko

  Oct. 2012, JOURNAL OF MAGNETIC RESONANCE, 223, 41 - 45, English

  [Refereed]

  Scientific journal


• Dzyaloshinsky-Moriya interaction and field-induced magnetic order in an antiferromagnetic honeycomb lattice compound Bi3Mn4O12(NO3) studied by high-field electron spin resonance

  Susumu Okubo, Tomonari Ueda, Hitoshi Ohta, Weimin Zhang, Takahiro Sakurai, Nozomi Onishi, Masaki Azuma, Yuichi Shimakawa, Hiroki Nakano, Toru Sakai

  Oct. 2012, PHYSICAL REVIEW B, 86(14) (14), 140401(R)/1 - 4, English

  [Refereed]

  Scientific journal


• Ferromagnetic properties of GdN thin films studied by temperature dependent circular polarized spectroscopy

  H. Yoshitomi, R. Vidyasagar, S. Kitayama, T. Kita, H. Ohta, S. Okubo, Y. Fukuoka, T. Sakurai

  Aug. 2012, APPLIED PHYSICS LETTERS, 101(7) (7), 072403/1 - 5, English

  [Refereed]

  Scientific journal


• THz ESR Study of Multiferroic Material CuO Under Pulsed Magnetic Field

  H. Ohta, S. Okubo, T. Kobayashi, T. Sakurai, W. Zhang, C. Yokoyama, X. G. Zheng, S. Nishihara, K. Inoue, M. Fujisawa, H. Kikuchi, E. Matsuoka, H. Sugawara

  2012, 2012 37TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), English

  [Refereed]

  International conference proceedings


• Possible new temperature phase observed in GeCo2O4 spinel by high-field ESR

  Tatsuya Yamasaki, Susumu Okubo, Hitoshi Ohta, Takahiro Sakurai, Shinichi Ikeda, Hiroyuki Oshima, Miwako Takahashi, Shigeo Hara, Keisuke Tomiyasu, Tadataka Watanabe

  2012, 26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5, 400, 032119/1 - 4, English

  [Refereed]

  International conference proceedings


• Magnetic and electric properties in the distorted tetrahedral spin chain system Cu3Mo2O9

  T. Hosaka, S. Hachiuma, H. Kuroe, T. Sekine, M. Hase, K. Oka, T. Ito, H. Eisaki, M. Fujisawa, S. Okubo, H. Ohta

  2012, 26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5, 400, 032022/1 - 4, English

  [Refereed]

  International conference proceedings


• Dzyaloshinsky-Moriya Interaction Estimated by AFMR of Kagome Like Substance Cu2O(SO4) Observed at 1.8K

  Naoki Takahashi, Susumu Okubo, Hitoshi Ohta, Takahiro Sakurai, Masashi Fujisawa, Hikomitu Kikuchi

  2012, 26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5, 400, 032097/1 - 4, English

  [Refereed]

  International conference proceedings


• Ferromagnetic transition and spin-ordering-induced band-gap reduction in GdN thin films

  Hiroaki Yoshitomi, Shinya Kitayama, Takashi Kita, Youhei Fukuoka, Masashi Fujisawa, Wei-Min Zhang, Susumu Okubo, Hitoshi Ohta, Takahiro Sakurai

  Nov. 2011, Zairyo/Journal of the Society of Materials Science, Japan, 60(11) (11), 1004 - 1008, Japanese

  [Refereed]

  Scientific journal


• Energy structure of Er-2O center in GaAs:Er,O studied by high magnetic field photoluminescence measurement

  Hiroyasu Katsuno, Hitoshi Ohta, Oliver Portugall, Nicolas Ubrig, Masashi Fujisawa, Fatma Elmasry, Susumu Okubo, Yasufumi Fujiwara

  Nov. 2011, JOURNAL OF LUMINESCENCE, 131(11) (11), 2294 - 2298, English

  [Refereed]

  Scientific journal


• Magnetic properties of vanadium oxide nanotubes and nanolayers

  S. V. Demishev, A. L. Chernobrovkin, V. V. Glushkov, A. V. Grigorieva, E. A. Goodilin, H. Ohta, S. Okubo, M. Fujisawa, T. Sakurai, N. E. Sluchanko, N. A. Samarin, A. V. Semeno

  Sep. 2011, PHYSICAL REVIEW B, 84(9) (9), English

  [Refereed]

  Scientific journal


• High-Frequency ESR Measurements of S=1/2 1-D Heisenberg Antiferromagnetic Zig-Zag Chain (VO)(SO4)(2,2-bpy)

  Naoki Takahashi, Susumu Okubo, Hitoshi Ohta, Takahiro Sakurai, Yuya Ishikawa, Masashi Fujisawa, Hikomitsu Kikuchi

  Aug. 2011, APPLIED MAGNETIC RESONANCE, 40(4) (4), 481 - 487, English

  [Refereed]

  Scientific journal


• Electric Polarization Induced by Neel Order without Magnetic Superlattice: Experimental Study of Cu3Mo2O9 and Numerical Study of a Small Spin Cluster

  Haruhiko Kuroe, Tomohiro Hosaka, Suguru Hachiuma, Tomoyuki Sekine, Masashi Hase, Kunihiko Oka, Toshimitsu Ito, Hiroshi Eisaki, Masashi Fujisawa, Susumu Okubo, Hitoshi Ohta

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

  [Refereed]

  Scientific journal


• Electron spin resonance study of photoluminescent material GaAs:Er,O-Er concentration effect

  Masashi Fujisawa, Atsushi Asakura, Fatma Elmasry, Susumu Okubo, Hitoshi Ohta, Yasufumi Fujiwara

  Mar. 2011, JOURNAL OF APPLIED PHYSICS, 109(5) (5), English

  [Refereed]

  Scientific journal


• Anomalous Spin Dynamics Observed by High-Frequency ESR in Honeycomb Lattice Antiferromagnet InCu2/3V1/3O3

  Susumu Okubo, Hideo Wada, Hitoshi Ohta, Takahiro Tomita, Masashi Fujisawa, Takahiro Sakurai, Eiji Ohmichi, Hikomitsu Kikuchi

  Feb. 2011, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(2) (2), English

  [Refereed]

  Scientific journal


• 希土類窒化物半導体GdN薄膜の強磁性相転移とスピン秩序誘起のバンドギャップ減少

  吉富 大明, 來山 真也, 喜多 隆, 福岡 洋平, 藤澤 真士, 張 衛民, 大久保 晋, 太田 仁, 櫻井 敬博

  2011, 材料, vol.60,No11,pp.1004-1008, Japanese

  [Refereed]

  Scientific journal


• High-field ESR using SQUID magnetometer

  T. Sakurai, R. Goto, N. Takahashi, S. Okubo, H. Ohta

  2011, HORIBA INTERNATIONAL CONFERENCE: THE 19TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS AND NANOTECHNOLOGY, 334, English

  [Refereed]

  International conference proceedings


• High field ESR measurements of S=1/2 low dimensional antiferromagnet (2,3-dmpyH)(2)CuBr(4)

  Hitoshi Ohta, Tatsuya Yamasaki, Susumu Okubo, Takahiro Sakurai, Masashi Fujisawa, Hikomitsu Kikuchi

  2011, INTERNATIONAL CONFERENCE ON FRUSTRATION IN CONDENSED MATTER (ICFCM), 320, English

  [Refereed]

  International conference proceedings


• Ferromagnetic State of GdN Thin Film Studied by Ferromagnetic Resonance

  H. Ohta, M. Fujisawa, F. Elmasry, S. Okubo, Y. Fukuoka, H. Yoshitomi, S. Kitayama, T. Kita, O. Wada

  2011, PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, 1399, English

  [Refereed]

  International conference proceedings


• Antiferromagnetic resonance modes for the S=1/2 kagome antiferromagnet Cs2Cu3SnF12

  S. Sharmin, I. Umegaki, H. Tanaka, T. Ono, G. Tanaka, H. Nojiri, M. Fujisawa, N. Matsumi, M. Tomoo, S. Okubo, H. Ohta, T. Sakurai

  2011, INTERNATIONAL SYMPOSIUM: NANOSCIENCE AND QUANTUM PHYSICS 2011 (NANOPHYS'11), 302, English

  [Refereed]

  International conference proceedings


• Far-Infrared Ferromagnetic Resonance of Magnetic Garnet for High Frequency Electromagnetic Sensor

  Nobuyasu Adachi, Daisuke Uematsu, Toshitaka Ota, Masanori Takahashi, Kazushi Ishiyama, Katsumi Kawasaki, Hiroyasu Ota, Kenichi Arai, S. Fujisawa, Susumu Okubo, Hitoshi Ohta

  Jun. 2010, IEEE TRANSACTIONS ON MAGNETICS, 46(6) (6), 1986 - 1989, English

  [Refereed]

  Scientific journal


• Spin dynamics of S=1/2 kagome basic solid state physics lattice antiferromagnets observed by high-field ESR

  Hitoshi Ohta, Wei-min Zhang, Susumu Okubo, Masashi Fujisawa, Takahiro Sakurai, Yoshihiko Okamoto, Hiroyuki Yoshida, Zenji Hiroi

  Mar. 2010, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 247(3) (3), 679 - 681, English

  [Refereed]

  Scientific journal


• Photoluminescence Measurement of Er,O-Codoped GaAs Under a Pulsed Magnetic Field up to 60 T

  Hitoshi Ohta, O. Portugall, N. Ubrig, M. Fujisawa, H. Katsuno, F. Elmasry, Susumu Okubo, Y.Fujiwara

  Mar. 2010, J. Low Temp. Phys., 159, 203-207, English

  [Refereed]

  Scientific journal


• High Field ESR Measurements of S=1/2 Quasi One-Dimensional Antiferromagnet Cu3Mo2O9

  Susumu Okubo, T. Yoshida, M. Fujisawa, Takahiro Sakurai, Hitoshi Ohta, T. Hamasaki, H. Kuroe, T. Sekine, M. Hase, K. Oka, T. Ito, H. Eisaki

  Mar. 2010, J. Low Temp. Phys., 159, 32-36, English

  [Refereed]

  Scientific journal


• Development of Multi-extreme ESR Measurement System in Kobe

  Hitoshi Ohta, Eiji Ohmichi, Susumu Okubo, Takahiro Sakurai, M. Fujisawa

  Mar. 2010, Low Temp. Phys., 159, 302-306, English

  [Refereed]

  Scientific journal


• High-Field ESR Measurements of S=1/2 Kagome Lattice Antiferromagnet BaCu3V2O8(OH)2

  W-M Zhang, Hitoshi Ohta, Susumu Okubo, M.Fujisawa, Takahiro Sakurai, Y.Okamoto, H. Yoshida, Z. Hiroi

  Feb. 2010, J, Phys. Soc. Jpn., 79(2), 023708/1-4, English

  [Refereed]

  Scientific journal


• Developments of THz ESR Systems Using a SQUID Magnetometer and a Micro-Cantilever

  Hitoshi Ohta, Takahiro Sakurai, Masashi Fujisawa, Susumu Okubo, Eiji Ohmichi

  2010, 35TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ 2010), English

  [Refereed]

  International conference proceedings


• Development of high-pressure, high-field and multi-frequency ESR apparatus and its application to quantum spin system

  T. Sakurai, T. Horie, M. Tomoo, K. Kondo, N. Matsumi, S. Okubo, H. Ohta, Y. Uwatoko, K. Kudo, Y. Koike, H. Tanaka

  2010, INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50, 215, English

  [Refereed]

  International conference proceedings


• Spin-Gap Observation in the Triangular Lattice Antiferromagnet InMnO(3) by High-Field ESR

  H. Ohta, N. Matsumi, S. Okubo, M. Fujisawa, T. Sakurai, H. Kikuchi, K. Furukawa, T. Nakamura

  2010, INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 200, English

  [Refereed]

  International conference proceedings


• High-field ESR measurements of S=3/2 honeycomb lattice antiferromagnet Bi3Mn4O12(NO3)

  Susumu Okubo, Fatma Elmasry, Weimin Zhang, Masashi Fujisawa, Takahiro Sakurai, Hitoshi Ohta, Masaki Azuma, Olga A. Sumirnova, Nobuhiro Kumada

  2010, INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 200, English

  [Refereed]

  International conference proceedings


• V-51-NMR Study of Honeycomb Lattice Antiferromagnet InCu2/3V1/3O3

  Y. Fujii, D. Takahashi, Y. Kubo, H. Kikuchi, A. Matsuo, K. Kindo, S. Okubo, H. Ohta

  2010, INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 200, English

  [Refereed]

  International conference proceedings


• Magnetic properties of magnetic semiconductor GaAs:Er,O studied by ESR

  Masashi Fujisawa, Atsushi Asakura, Fatma Elmasry, Susumu Okubo, Hitoshi Ohta, Yasufumi Fujiwara

  2010, INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 200, English

  [Refereed]

  International conference proceedings


• Magnetic interactions in frustrated Mn3Fe4(VO4)(6)

  N. Guskos, H. Ohta, G. Zolnierkiewicz, S. Okubo, Wei-min Zhang, J. Typek, C. Rudowicz, R. Szymczak, M. Bosacka, T. Nakamura

  Aug. 2009, JOURNAL OF NON-CRYSTALLINE SOLIDS, 355(24-27) (24-27), 1419 - 1426, English

  [Refereed]

  Scientific journal


• Dzyaloshinsky-Moriya interaction in the S=12 quasi-one-dimensional antiferromagnet Cu2Cl4 center dot H8C4SO2 as determined via high-frequency ESR

  M. Fujisawa, K. Shiraki, S. Okubo, H. Ohta, M. Yoshida, H. Tanaka, T. Sakai

  Jul. 2009, PHYSICAL REVIEW B, 80(1) (1), English

  [Refereed]

  Scientific journal


• Development and applications of high-frequency ESR up to 55 T

  H. Ohta, S. Okubo, N. Souda, M. Tomoo, T. Sakurai, T. Yoshida, E. Ohmichi, N. Fujisawa, H. Tanaka, R. Kato

  Apr. 2009, APPLIED MAGNETIC RESONANCE, 35(3) (3), 399 - 410, English

  [Refereed]

  Scientific journal


• New Magneto-Optical Effect in Co-Doped CuGeO3

  A.V. Semeno, Hitoshi Ohta, Susumu Okubo, N.E. Sluchanko, I.E. Tarasenko, A.V. Kuznetsov, T.V. Ishchenko, S.V. Demishev

  Feb. 2009, Appl. Magn. Reson, 33 3-9, English

  [Refereed]

  Scientific journal


• High-frequency study of the orbital ordering resonance in the strongly correlated heavy fermion metal CeB6

  S. V. Demishev, A. V. Semeno, H. Ohta, S. Okubo, Yu. B. Paderno, N. Yu. Shitsevalova, N. E. Sluchanko

  Feb. 2009, APPLIED MAGNETIC RESONANCE, 35(2) (2), 319 - 326, English

  [Refereed]

  Scientific journal


• Magnetic Resonance and Nature of Magnetism in CeB6

  S. V. Demishev, A. V. Semeno, A. V. Bogach, N. A. Samarin, H. Ohta, S. Okubo, N. Yu. Shitsevalova, N. E. Sluchanko

  2009, MAGNETISM AND MAGNETIC MATERIALS, 152-153, 353 - +, English

  [Refereed]

  International conference proceedings


• Submillimeter and millimeter wave ESR measurements of frustrated triangular lattice substance InMnO3

  N. Matsumi, S. Okubo, M. Fujisawa, T. Sakurai, H. Ohta, K. Furukawa, T. Nakamura, H. Kikuchi

  2009, 2009 34TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, VOLS 1 AND 2, 574 - +, English

  [Refereed]

  International conference proceedings


• Magnetic Susceptibility Measurement Under High Pressure and Magnetization Measurement of S=1/2 Dioptase Lattice Antiferromagnet

  H. Ohta, M. Fujisawa, N. Souda, S. Okubo, E. Ohmichi, T. Sakurai, H. Kikuchi, T. Ono, H. Tanaka, K. Matsubayashi, Y. Uwatoko

  2009, 25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4, 150, English

  [Refereed]

  International conference proceedings


• Impurity effect of an S = 1/2 two leg spin ladder antiferromagnet [Ph(NH3)]([18]crown-6)[Ni(dmit)2] studied

  M. Fujisawa, A. Asakura, Susumu Okubo, Hitoshi Ohta, S. Nishihara, T.Akutagawa, T. Nakamura, Y. Hosokoshi

  2009, J. Phys.:Conf. Series, 150, 042034, English

  [Refereed]

  Scientific journal


• High frequency ESR measurements of Co-delta chain

  W. Zhang, S. Okubo, M. Fujisawa, T. Tomita, H. Ohta, H. Kikuchi

  2009, 25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4, 150, English

  [Refereed]

  International conference proceedings


• High field ESR measurements of quantum triple chain system Cu-3(OH)(4)SO4

  S. Okubo, H. Yamamoto, M. Fujisawa, H. Ohta, T. Nakamura, H. Kikuchi

  2009, 25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4, 150, English

  [Refereed]

  International conference proceedings


• High-field and high-pressure ESR measurements of SrCu2(BO3)(2)

  T. Sakurai, M. Tomoo, S. Okubo, H. Ohta, K. Kudo, Y. Koike

  2009, 25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4, 150, English

  [Refereed]

  International conference proceedings


• S=1/2 Kagome Lattice Antiferromagnet Cu3V2O7(OH)(2) center dot 2H(2)O Studied by High Field ESR

  H. Ohta, W. Zhang, S. Okubo, M. Tomoo, M. Fujisawa, H. Yoshida, Y. Okamoto, Z. Hiroi

  2009, HIGHLY FRUSTRATED MAGNETISM 2008 (HFM 2008), 145, English

  [Refereed]

  International conference proceedings


• Multi-frequency ESR study of S=1/2 frustration systems ZnxCu4-x(OH)(6)Cl-2

  M. Tomoo, S. Okubo, T. Sakurai, T. Tomita, M. Fujisawa, H. Ohta, H. Kikuchi

  2009, HIGHLY FRUSTRATED MAGNETISM 2008 (HFM 2008), 145, English

  [Refereed]

  International conference proceedings


• High field ESR measurements of S=1/2 kagome Heisenberg antiferromagnet ZnCu3(OH)(6)Cl-2

  S. Okubo, M. Tomoo, H. Ohta, H. Kikuchi

  2009, HIGHLY FRUSTRATED MAGNETISM 2008 (HFM 2008), 145, English

  [Refereed]

  International conference proceedings


• High field ESR measurements on one dimensional antiferromagnetic zigzag chain systems

  Hitoshi Ohta, Susumu Okubo, Kousuke Shiraki, Makoto Yoshida, Alexei A. Belik, Masaki Azuma, Mikio Takano

  Aug. 2008, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 53(2) (2), 999 - 1005, English

  [Refereed]

  Scientific journal


• SR Probing of Quantum Critical Phenomena in Doped S=1/2 AF Quantum Spin Chain

  S. V. Demishev, A. V. Semeno, N. E. Sluchanko, N. A. Samarin, I. E. Tarasenko, Hitoshi Ohta, Susumu Okubo

  2008, Appl. Magn. Reson, 35 327-335, English

  [Refereed]

  Scientific journal


• Observation of Direct Transitions in the Ferromagnetic and Antiferromagnetic Dimer System (CH3)2NH2CuCl3 by High-Field ESR

  Makoto YOSHIDA, Yumiko KITANO, Yuji Inagaki, Motoi Kimata, Susumu Okubo, Hitoshi Ohta, Keiichi Koyamao, Mistuhiro Motokawa, Takayuki Sano, Yoshitami Ajiro

  High-field electron spin resonance (ESR) measurements of single crystals of (CH₃)₂NH₂CuCl₃ (DMACuCl₃) have been performed in the frequency range of 50 to 550 GHz in the paramagnetic region. In addition to the electron paramagnetic resonance, we have observed four ESR modes ω₁, ω₂, ω₃, and ω₄. The modes ω₂ and ω₃ have a frequency gap of 325 GHz (15.6 K), while the mode ω₁ has a gap of 420 GHz (20 K) at 0 T. The modes ω₂ and ω₃ are attributed to the transitions between the singlet and the triplet of the antiferromagnetic (AF) dimer. We found that the large spin-gap for the AF dimer still remains at the critical field B_c2 = 3.5 T determined by magnetization and specific heat measurements.

  THE PHYSICAL SOCIETY OF JAPAN, Dec. 2007, Journal of the Physical Sociery of Japan, Vol.76, No.11 113704-1-4(11) (11), 113704 - 113704, English

  [Refereed]

  Scientific journal


• Anomalous polarization characteristics of magnetic resonance in a quasi-one-dimensional CuGeO3 : Co magnet

  S. V. Demishev, A. V. Semeno, H. Ohta, S. Okubo, I. E. Tarasenko, T. V. Ishchenko, N. A. Samarin, N. E. Sluchanko

  Jul. 2007, PHYSICS OF THE SOLID STATE, 49(7) (7), 1295 - 1304, English

  [Refereed]

  Scientific journal


• Development of high-pressure, high-field and multifrequency electron spin resonance system

  T. Sakurai, A. Taketani, T. Tomita, S. Okubo, H. Ohta, Y. Uwatoko

  Jun. 2007, REVIEW OF SCIENTIFIC INSTRUMENTS, 78(6) (6), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• High-frequency ESR measurements of the Co spinel compound SiCo2O4

  Wei-Min Zhang, Susum Okubo, Hitoshi Ohta, Takashi Saito, Mikio Takano

  Apr. 2007, JOURNAL OF PHYSICS-CONDENSED MATTER, 19(14) (14), English

  [Refereed]

  Scientific journal


• Submillimetre and millimetre wave ESR study of manganese spinel compound LiMn2O4

  S. Takano, T. Kaji, S. Okubo, H. Ohta, M. Yoshida, S. Kimura, R. Dziembaj, M. Molenda, C. Rudowicz, Y. Inagaki, T. Asano

  Apr. 2007, JOURNAL OF PHYSICS-CONDENSED MATTER, 19(14) (14), English

  [Refereed]

  Scientific journal


• High-field ESR study of one-dimensional S=1/2 Heisenberg antiferromagnet with next-nearest exchange interaction

  H. Ohta, S. Takano, S. Okubo, M. Yoshid, H. Kikuchi

  Mar. 2007, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310(2) (2), 1234 - 1235, English

  [Refereed]

  Scientific journal


• High field ESR studies of layered manganese oxides A(4)Mn(3)O(10) (A = Ba, Sr)

  Noriyasu Souda, Weimin Zhang, Takahiro Sakurai, Susumu Okubo, Hitoshi Ohta, Kousuke Nishimura, Hiroya Sakurai, Kazuyoshi Yoshimura, Eiji Takayama-Muromachi

  Mar. 2007, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310(2) (2), 1829 - 1831, English

  [Refereed]

  Scientific journal


• Quantum criticality and collective effects in low-dimensional magnet CuGeO 3:Fe probed by high frequency EPR

  S. V. Demishev, A. V. Semeno, A. A. Pronin, N. E. Sluchanko, N. A. Samarin, H. Ohta, S. Okubo, M. Kimata, K. Koyama, M. Motokawa, A. V. Kuznetsov

  Feb. 2007, Journal of Superconductivity and Novel Magnetism, 20, 105 - 108


• ESR measurement of triple chain magnet Cu-3(OH)(4)SO4 in millimeter wave region

  Hiroshi Yamamoto, Takahiro Tomita, Masashi Fujisawa, Susumu Okubo, Hitoshi Ohta, Hikomimtu Kikuchi, Toshikazu Nakamura

  2007, 2007 JOINT 32ND INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 15TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, VOLS 1 AND 2, 232 - +, English

  [Refereed]

  International conference proceedings


• New polarization effect and collective excitation in S=1/2 quasi-one-dimensional antiferromagnetic quantum spin chain

  S. V. Demishev, A. V. Semeno, H. Ohta, S. Okubo, I. E. Tarasenko, T. V. Ishchenko, N. E. Sluchanko

  Nov. 2006, JETP LETTERS, 84(5) (5), 249 - 253, English

  [Refereed]

  Scientific journal


• ESR measurements on one-dimensional quantum ferrimagnets A(3)Cu(3)(PO4)(4) with A = Sr and Ca in submillimeter-wave region

  Shojiro Kimura, Hirofumi Ishikawa, Yuji Inagaki, Makoto Yoshida, Susumu Okubo, Hitoshi Ohta, Hiroyuki Nojiri, Alexei A. Belik, Masaki Azuma, Mikio Takano

  Sep. 2006, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75(9) (9), English

  [Refereed]

  Scientific journal


• Low-temperature study of the quantum critical phenomena in CuGeO 3:Fe

  S. V. Demishev, A. V. Semeno, A. A. Pronin, N. E. Sluchanko, N. A. Samarin, H. Ohta, S. Okubo, M. Kimata, K. Koyama, M. Motokawa, A. V. Kuznetsov

  May 2006, Journal of Magnetism and Magnetic Materials, 300


• Quantum critical behavior induced by Mn impurity in CuGeO3

  AV Semeno, NE Sluchanko, NA Samarin, AA Pronin, H Ohta, S Okubo, SV Demishev

  May 2006, PHYSICA B-CONDENSED MATTER, 378-80, 115 - 116, English

  [Refereed]

  Scientific journal


• High field ESR study of three dimensional spin frustrated system MgCr2O4

  M Yoshida, T Hirano, Y Inagaki, S Okubo, H Ohta, H Kikuchi, Kagomiya, I, M Toki, K Kohn

  Apr. 2006, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75(4) (4), English

  [Refereed]

  Scientific journal


• Submillimeter wave ESR measurement of a finite haldane chain system Y2BaNi0.96Mg0.04O5

  H. Ohta, A. Yoshida, S. Okubo

  2006, CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, 233 - 233, English

  [Refereed]

  International conference proceedings


• Submillimeter and millimeter wave ESR measurements of the S=1/2 trimer chain M3Cu3(PO4)(4)(M=Sr,Ca)

  S. Okubo, H. Ishikawa, H. Ohta, S. Kimura, Y. Inagaki, A. A. Belik, M. Azuma, M. Takano

  2006, LOW TEMPERATURE PHYSICS, PTS A AND B, 850, 1037 - +, English

  [Refereed]

  International conference proceedings


• Submillimeter and millimeter wave ESR measurements of the S=1/2 one dimensional Zigzag chain MCuP2O7 (M=Sr, Pb)

  K. Shiraki, M. Yoshida, S. Okubo, H. Ohta, M. Sakamoto, S. Miyashita, Alexei A. Belik, M. Azuma, M. Takano

  2006, LOW TEMPERATURE PHYSICS, PTS A AND B, 850, 1025 - +, English

  [Refereed]

  International conference proceedings


• Recent developments of high field ESR systems in Kobe

  H. Ohta, M. Tomoo, S. Okubo, T. Sakurai, M. Fujisawa, T. Tomita, M. Kimata, T. Yamamoto, M. Kawauchi, K. Kindo

  2006, YAMADA CONFERENCE LX ON RESEARCH IN HIGH MAGNETIC FIELDS, 51, 611 - +, English

  [Refereed]

  International conference proceedings


• Highly sensitive detection of pulsed field ESR using a cantilever at low temperature

  H. Ohta, M. Kimata, S. Okubo, E. Ohmichi, T. Osada

  2006, LOW TEMPERATURE PHYSICS, PTS A AND B, 850, 1643 - +, English

  [Refereed]

  International conference proceedings


• High frequency ESR measurements of one-dimensional edgesharing CuO2 chain system Ca2Y2Cu5O10

  Susumu Okubo, Kanji Kawakami, Makoto Yoshida, Hitoshi Ohta

  2006, PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 8, 3(8) (8), 2828 - +, English

  [Refereed]

  International conference proceedings


• High frequency ESR measurements of high pressure phase SiCo2O4

  W. Zhang, S. Okub, H. Ohta, T. Saito, M. Takano

  2006, PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 8, 3(8) (8), 2824 - +, English

  [Refereed]

  International conference proceedings


• High field ESR study of frustrated spinel system LiCrTiO4

  H. Ohta, S. Okubo, S. Ono, H. Kikuchi

  2006, Physica Status Solidi (C) Current Topics in Solid State Physics, 3(8) (8), 2816 - 2819, English

  [Refereed]

  International conference proceedings


• High field ESR measurements on the lithium-ion battery substance LiMn2O4

  S. Takano, T. Kaji, S. Okubo, M. Yoshida, Y. Inagaki, S. Kimura, T. Asano, H. Ohta, T. Kunimoto, R. Dziembaj, M. Molenda, C. Rudowicz

  2006, PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 8, 3(8) (8), 2820 - +, English

  [Refereed]

  International conference proceedings


• High field ESR measurements of the organic magnet F5PNN

  Masafumi Kodama, Takahiro Sakurai, Susurnu Okubo, Hitoshi Ohta, Yuko Hosokoshi

  2006, LOW TEMPERATURE PHYSICS, PTS A AND B, 850, 1027 - +, English

  [Refereed]

  International conference proceedings


• ESR studies of quantum spin systems using the pulsed magnetic field

  H. Ohta, M. Yoshida, S. Okubo, T. Ito, H. Takagi, Y. Ajiro

  2006, YAMADA CONFERENCE LX ON RESEARCH IN HIGH MAGNETIC FIELDS, 51, 15 - +, English

  [Refereed]

  International conference proceedings


• ESR measurements of KCuCl3 under multi extreme conditions

  T. Sakurai, A. Taketani, S. Kimura, A. Yoshida, S. Okubo, H. Ohta, H. Tanaka, Y. Uwatoko

  2006, LOW TEMPERATURE PHYSICS, PTS A AND B, 850, 1057 - +, English

  [Refereed]

  International conference proceedings


• Development and application of high field and high pressure ESR system

  T. Sakurai, A. Taketani, T. Tomita, S. Okubo, H. Ohta, H. Tanaka, Y. Uwatoko

  2006, YAMADA CONFERENCE LX ON RESEARCH IN HIGH MAGNETIC FIELDS, 51, 565 - +, English

  [Refereed]

  International conference proceedings


• Crystal structure and properties of phosphate PbCu2(PO4)(2) with spin-singlet ground state

  AA Belik, M Azuma, A Matsuo, T Kaji, S Okubo, H Ohta, K Kindo, M Takano

  Jan. 2006, PHYSICAL REVIEW B, 73(2) (2), English

  [Refereed]

  Scientific journal


• High sensitive detection of sub-THz ESR using the cantilever and the pulsed magnetic field

  H. Ohta, M. Kimata, S. Okubo, E. Ohmichi, T. Osada

  Dec. 2005, The Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005, 2, 417 - 418

  [Refereed]

  International conference proceedings


• High field ESR measurements of spin gap system MCu2(PO4)(2)

  T Kaji, S Okubo, H Ohta, Y Inagaki, AA Belik, M Azuma, M Takano

  Nov. 2005, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 66(11) (11), 2068 - 2071, English

  Scientific journal


• Magnetization and high-frequency EMR measurements on the lithium-ion battery substance LiMn2O4

  S. Kimura, T. Kaji, S. Okubo, M. Yoshida, Y. Inagaki, T. Asano, H. Ohta, T. Kunimoto, R. Dziembaj, M. Molenda, C. Rudowicz

  Oct. 2005, Jpn, J, Appl. Phys., 44, 7440, English

  [Refereed]

  Scientific journal


• Ferro-antiferromagnetic delta-chain system studied by high field magnetization measurements

  Y Inagaki, Y Narumi, K Kindo, H Kikuchi, T Kamikawa, T Kunimoto, S Okubo, H Ohta, T Saito, M Azuma, M Takano, H Nojiri, M Kaburagi, T Tonegawa

  Oct. 2005, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74(10) (10), 2831 - 2835, English

  [Refereed]

  Scientific journal


• Investigation of the crystal structure and the structural and magnetic properties of SrCu2(PO4)(2)

  AA Belik, M Azuma, A Matsuo, MH Whangbo, HJ Koo, J Kikuchi, T Kaji, S Okubo, H Ohta, K Kindo, M Takano

  Sep. 2005, INORGANIC CHEMISTRY, 44(19) (19), 6632 - 6640, English

  Scientific journal


• Energy structure of a finite Haldane chain in Y2BaNi0.96Mg0.04O5 studied by high field electron spin resonance

  M Yoshida, K Shiraki, S Okubo, H Ohta, T Ito, H Takagi, M Kaburagi, Y Ajiro

  Sep. 2005, PHYSICAL REVIEW LETTERS, 95(11) (11), English

  [Refereed]

  Scientific journal


• Disorder-driven quantum critical behaviour in CuGeO3 doped with magnetic impurity

  S. V. Demishev, A. V. Semeno, N. E. Sluchanko, N. A. Samarin, A. A. Pronin, V. V. Glushkov, H. Ohta, S. Okubo, M. Kimata, K. Koyama, M. Motokawa, A. V. Kuznetsov

  Apr. 2005, Physica B: Condensed Matter, 359-361, 1315 - 1317


• High field ESR study of the spin gap system with the field-induced phase

  H Ohta, T Sakurai, M Kodama, M Kimata, S Okubo, M Yoshida, Y Hosokoshi, H Tanaka, Y Uwatoko

  2005, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, (159) (159), 184 - 188, English

  [Refereed]

  Scientific journal


• The competition between staggered field and antiferromagnetic interactions in CuGeO3 : Fe

  S Demishev, A Semeno, A Pronin, N Sluchanko, N Samarin, H Ohta, S Okubo, M Kimata, K Koyama, M Motokawa

  2005, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 159 387-391(159) (159), 387 - 391, English

  [Refereed]

  Scientific journal


• Studies of Novel Quantum Spin System by High Field ESR in Kobe

  OHTA Hitoshi, OKUBO Susumu, INAGAKI Yuji, NAGASAWA Y, KAMIKAWA T, KAJI T, TANAKA Hidekazu, KIKUCHI Hikomitsu

  2005, Megagauss X, ed. M. von Ortenberg, 276-279, Japanese

  Scientific journal


• Oshikawa-Affleck Electron Spin Resonance Behavior Observed in One-Dimensional Antiferromagnet BaCu2(Si1-xGex)(2)O-7 (x=0.65)

  Susumu Okubo, Daisuke Fukuoka, Motoi Kimata, Hitoshi Ohta, Yuji Inagaki, Takashi Kumimoto, Keiichi Koyama, Mitsuhiro Motokawa, Zenji Hiroi

  2005, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74, English

  Scientific journal


• Oshikawa-Affleck Electron Spin Resonance Behavior Observed in One-Dimensional Antiferromagnet BaCu2(Si1-xGex)(2)O-7 (x=0.65)

  Susumu Okubo, Daisuke Fukuoka, Motoi Kimata, Hitoshi Ohta, Yuji Inagaki, Takashi Kumimoto, Keiichi Koyama, Mitsuhiro Motokawa, Zenji Hiroi

  2005, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74, English

  [Refereed]

  Scientific journal


• High Field ESR Study of the Spin Gap System with the Field-Induced Order

  OHTA Hitoshi, SAKURAI Takahiro, KODAMA Masafumi, KIMATA Motoi, OKUBO Susumu, YOSHIDA Makoto, HOSOKOSHI Y, TANAKA Hidekazu, UWATOKO Yoshiya

  2005, Prog. Theo. Phys. Suppl., vol159, pp184-188, English

  Scientific journal


• High field ESR study of 1D alternating chain system Pb2V3O9

  M Kodama, M Yoshida, S Okubo, H Ohta, T Waki, Y Morimoto, C Michioka, M Kato, K Yoshimura

  2005, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 159 114-117(159) (159), 114 - 117, English

  [Refereed]

  Scientific journal


• High field ESR measurements of S=1/2 diamond chain substance Cu-3(CO3)(2)(OH)(2) at the magnetization plateau region

  S Okubo, A Taketani, H Ohta, T Kunimoto, Y Inagaki, T Saito, M Azuma, M Takano, H Kikuchi

  2005, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 159 11-16(159) (159), 11 - 16, English

  [Refereed]

  Scientific journal


• High field ESR measurements of MCuP2O7 (M = Sr, Pb)

  K Shiraki, M Yoshida, S Okubo, H Ohta, AA Belik, M Azuma, M Takano

  2005, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, vol.159, pp168-172(159) (159), 168 - 172, English

  Scientific journal


• High field ESR measurements of MCuP2O7 (M = Sr, Pb)

  K Shiraki, M Yoshida, S Okubo, H Ohta, AA Belik, M Azuma, M Takano

  2005, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 159 168-172.(159) (159), 168 - 172, English

  [Refereed]

  Scientific journal


• High field ESR measurement of TlCuCl3 under pressure

  A Taketani, T Sakurai, M Kodama, S Okubo, H Ohta, H Tanaka, Y Uwatoko

  2005, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, vol159, pp407-411(159) (159), 407 - 411, English

  Scientific journal


• Experimental examination of chain-dimer model in Ca1-xCuO2 (x=0.164) by high field ESR measurements

  Y Inagaki, H Ohta, A Ueda, S Okubo, Z Hiroi, M Okumura, M Takano

  Jun. 2004, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(6) (6), 1547 - 1553, English

  [Refereed]

  Scientific journal


• Submillimeter and millimeter wave ESR measurements of diamond-chain substance Cu-3(CO3)(2)(OH)(2)

  S Okubo, T Kamikawa, T Kunimoto, Y Inagaki, H Ohta, H Nojiri, H Kikuchi

  May 2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, 912 - 913, English

  [Refereed]

  Scientific journal


• Magnetic phase transition of high-pressure phase (VO)(2)P2O7 studied by high-field ESR measurements

  K. Hiraka, Y. Nagasaka, T. Kunimoto, Y. Inagaki, S. Okubo, H. Ohta, T. Saito, M. Azuma, M. Takano

  May 2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, E1675 - E1676, English

  [Refereed]

  Scientific journal


• Direct determination of magnetic anisotropy in S=1 bond alternating system by high field ESR

  Y. Inagaki, S. Takeda, S. Okubo, H. Ohta, H. Kikuchi, N. Ogawa, T. Tonegawa

  May 2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, E661 - E662, English

  [Refereed]

  Scientific journal


• Breather excitation observed by high-field ESR in one-dimensional antiferromagnet BaCu2(Si1-xGex)(2)O-7 (x=0.65)

  B Ohta, S Okubo, D Fukuoka, Y Inagaki, T Kunimoto, M Kimata, K Koyama, M Motokawa, Z Hiroi

  May 2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, 929 - 930, English

  [Refereed]

  Scientific journal


• High-field ESR measurements of CsCuCl3 under pressure

  T Sakurai, M Saruhashi, Y Inagaki, S Okubo, H Ohta, H Tanaka, Y Uwatoko

  Apr. 2004, PHYSICA B-CONDENSED MATTER, 346, 221 - 225, English

  [Refereed]

  Scientific journal


• Recent high field ESR studies of low-dimensional quantum spin systems in Kobe

  H Ohta, S Okubo, Y Inagaki, Z Hiroi, H Kikuchi

  Apr. 2004, PHYSICA B-CONDENSED MATTER, 346, 38 - 44, English

  [Refereed]

  Scientific journal


• High-field ESR study on frustrated spin chain system KCu5V3O13

  Y Inagaki, D Fukuoka, T Sakurai, S Okubo, H Ohta, H Sakurai, K Yoshimura, K Kosuge, H Michor, G Hilscher

  Apr. 2004, PHYSICA B-CONDENSED MATTER, 346(1-4) (1-4), 60 - 64, English

  [Refereed]

  Scientific journal


• High-field ESR systems in Kobe

  S Okubo, H Ohta, Y Inagaki, T Sakurai

  Apr. 2004, PHYSICA B-CONDENSED MATTER, 346, 627 - 632, English

  [Refereed]

  Scientific journal


• High-field ESR measurements of novel spin chain substance Bi4Cu3V2O14

  S Okubo, T Hirano, Y Inagaki, H Ohta, H Sakurai, H Yoshimura, K Kosuge

  Apr. 2004, PHYSICA B-CONDENSED MATTER, 346, 65 - 69, English

  [Refereed]

  Scientific journal


• Development of submillimeter wave ESR measurement system under high pressure

  H Ohta, T Sakurai, S Okubo, M Kodama, A Taketani, H Tanaka, Y Uwatoko

  2004, CONFERENCE DIGEST OF THE 2004 JOINT 29TH INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 12TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, 169 - 170, English

  [Refereed]

  International conference proceedings


• Microwave EPR spectroscopy of cobalt-doped germanium cuprate

  Demishev S. V, Semeno A. V, Sluchanko N. E, Samarin N. A, Pronin A. A, Inagaki Y, Okubo S, Ohta H, Oshima Y, Leonyuk L. I

  2004, Physics of the Solid State, 46, 2238 - 2248

  [Refereed]


• High Field ESR Measurements of Organic Compounds

  OHTA Hitoshi, OKUBO Susumu, SAKURAI T, KIRITA K, KANODA K, HIRAKI K, ENOMOTO K, MIYAZAKI A, ENOKI T, YAMAMOTO H, KATO R

  2004, Radiobiology and Bio-Medical Research, K.P.Mishra ed., 177-183, English

  [Refereed]

  Scientific journal


• Cyclotron Resonance Measurement of BEDT-TTF Salt Under High Magnetic Field

  OHTA Hitoshi, OSHIMA Y, AKIOKA K, OKUBO Susumu, KANODA K

  2004, Megagauss Magnetic Field Generation, Its Application to Science and Ultra High Pulsed Power Technology, Hans J Schneider- Muntau Ed., 250-253, English

  [Refereed]

  Scientific journal


• Millimeter-wave investigation of the antiferromagnetic phase in lambda-(BETS)(2)FeCl4 in high magnetic fields

  Rutel, I, S Okubo, JS Brooks, E Jobiliong, H Kobayashi, A Kobayashi, H Tanaka

  Oct. 2003, PHYSICAL REVIEW B, 68(14) (14), English

  Scientific journal


• Millimeter-wave investigation of the antiferromagnetic phase in lambda-(BETS)(2)FeCl4 in high magnetic fields

  Rutel, I, S Okubo, JS Brooks, E Jobiliong, H Kobayashi, A Kobayashi, H Tanaka

  Oct. 2003, PHYSICAL REVIEW B, 68(14) (14), English

  Scientific journal


• High field ESR study of the S=1/2 diamond-chain substance Cu-3(CO3)(2)(OH)(2) up to the magnetization plateau region

  H Ohta, S Okubo, T Kamikawa, T Kunimoto, Y Inagaki, H Kikuchi, T Saito, M Azuma, M Takano

  Oct. 2003, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72(10) (10), 2464 - 2467, English

  Scientific journal


• Anomalous temperature dependence of the ESR linewidth in CuGeO3 doped with magnetic impurities and the universal relations in the Oshikawa-Affleck theory

  SV Demishev, Y Inagaki, H Ohta, S Okubo, Y Oshima, AA Pronin, NA Samarin, AV Semeno, NE Sluchanko

  Aug. 2003, EUROPHYSICS LETTERS, 63(3) (3), 446 - 452, English

  Scientific journal


• Submillimeter wave ESR system using the pulsed magnetic field and its applications to one dimensional antiferromagnetic system

  Hitoshi Ohta, Susumu Okubo, Kanji Kawakami, Daisuke Fukuoka, Yuji Inagaki, Takashi Kunimoto, Zenji Hiroi

  Jun. 2003, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72, English

  Scientific journal


• High Field ESR Measurements under Pressure

  Takahiro Sakurai, Masayoshi Saruhashi, Tomoya Hirano, Yuji Inagaki, Susumu Okubo, Takashi Kunimoto, Hitoshi Ohta, Hidekazu Tanaka, Yoshiya Uwatoko

  Jun. 2003, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72, English

  Scientific journal


• Field induced magnetic ordering in CsFeBr3 studied by high field ESR

  Yuji Inagaki, Susumu Okubo, Hitoshi Ohta, Hidekazu Tanaka

  Jun. 2003, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72, English

  Scientific journal


• Electron Spin Resonance in Triangular Antiferromagnets

  Hidekazu Tanaka, Toshio Ono, Shuji Maruyama, Soichiro Teraoka, Kazukiyo Nagata, Hitoshi Ohta, Susumu Okubo, Shojiro Kimura, Takashi Kambe, Hiroyuki Nojiri, Mitsuhiro Motokawa

  Jun. 2003, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72, English

  Scientific journal


• High-field ESR measurements of quantum spin system under high pressure

  M Saruhashi, T Sakurai, T Hirano, H Ohta, S Okubo, Y Inagaki, Y Uwatoko

  May 2003, PHYSICA B-CONDENSED MATTER, 329, 963 - 964, English

  [Refereed]

  Scientific journal


• High magnetic field ESR study of field induced antiferromagnetic ordering in CsFeBr3 at low temperature

  S Okubo, R Koyama, Y Inagaki, H Ohta, H Tanaka

  May 2003, PHYSICA B-CONDENSED MATTER, 329, 1069 - 1070, English

  Scientific journal


• High field ESR measurement of diamond chain substance Cu-3(OH)(2)(CO3)(2)

  T Kamikawa, S Okubo, T Kunimoto, H Ohta, Y Inagaki, H Kikuchi, T Saito, M Azuma, M Takano

  May 2003, PHYSICA B-CONDENSED MATTER, 329, 988 - 989, English

  Scientific journal


• ESR study of frustrared Delta-chain system

  T Kunimoto, T Kamikawa, Y Inagaki, S Okubo, H Ohta, H Kikuchi, T Saito, M Azuma, M Takano

  May 2003, PHYSICA B-CONDENSED MATTER, 329, 1057 - 1058, English

  Scientific journal


• Submillimeter and millimeter wave ESR measurements of (DMET)(2)FeBr4 below T-N

  S Okubo, K Kirita, Y Inagaki, H Ohta, K Enomoto, A Miyazaki, T Enoki

  Apr. 2003, SYNTHETIC METALS, 135(1-3) (1-3), 589 - 590, English

  Scientific journal


• High field ESR measurements of charge transfer salts under high pressure

  T Sakurai, M Saruhashi, Y Inagaki, S Okubo, H Ohta, K Hiraki, Y Uwatoko

  Apr. 2003, SYNTHETIC METALS, 135(1-3) (1-3), 523 - 524, English

  Scientific journal


• Temperature dependence millimeter wave ESR measurements of Et2Me2P[Pd(dmit)(2)](2)

  T Sakurai, H Ohta, S Okubo, R Kato, T Nakamura

  Mar. 2003, SYNTHETIC METALS, 133, 421 - 422, English

  [Refereed]

  Scientific journal


• Quantum critical point in CuGeO3 doped with magnetic impurities

  Demishev S. V, Inagaki Y, Markina M. M, Ohta H, Okubo S, Oshima Y, Pronin A. A, Sluchanko N. E, Samarin N. A, Glushkov V. V

  2003, Physica B-Condensed Matter, 329, 715 - 716

  [Refereed]


• Magnetic properties of the fullerene organic compounds in strong magnetic fields

  Spitsina N, Demishev S, Ohta H, Okubo S, Oshima Y, Weckhuysen L

  2003, Polyhedron, 22, 2009 - 2012

  [Refereed]


• Quantum critical behaviour in CuGeO3

  Demishev S. V, Pronin A. A, Sluchanko N. E, Samarin N. A, Glushkov V. V, Inagaki Y, Ohta H, Okubo S, Oshima Y, Markina M. M

  2003, Acta Physica Polonica B, 34, 729 - 732

  [Refereed]


• Magnetooptical measurements of β-(BEDT-TTF)2AuI2

  OHTA Hitoshi, OSHIMA Y, INAGAKI Yuuji, OKUBO Susumu, KIMATA Motoi, KOYAMA K, MOTOKAWA M, MORI T

  2003, Synthetic Metals, 135-136, 527-528, English

  Scientific journal


• Development of a high-field ESR system under high pressure

  H Ohta, T Sakurai, S Okubo, M Saruhashi, T Kunimoto, Y Uwatoko, J Akimitsu

  Nov. 2002, JOURNAL OF PHYSICS-CONDENSED MATTER, 14(44) (44), 10637 - 10640, English

  [Refereed]

  Scientific journal


• Low Dimensionality Observed by ESR Measurements in S=1 Spin Ladder Substance BIP-TENO (3,3',5,5'-tetrakis(N-tert-butyl- aminoxyl)biphenyl)

  Hitoshi Ohta, Keizo Kirita, Takashi Kunimoto, Susumu Okubo, Yuko Hosokoshi, Keiichi Katoh, Katsuya Inoue, Akira Ogasahara, Seiji Miyashita

  May 2002, J. Phys. Soc. Jpn., 71(11) (11), 2640 - 2643, English

  [Refereed]


• High field ESR measurements of quantum antiferromagnetic chain substances BaCu₂(Si_1－xGe_x)₂O₇

  Hitoshi Ohta, Kanji Kawakami, Susumu Okubo, Takashi Kunimoto, Zenji Hiroi, Takahiro Yamada, Mikio Takano

  Apr. 2002, Journal of Physics and Chemistry of Solids, 63, 1107 - 1110, English

  [Refereed]

  Scientific journal


• High field ESR study of BaCu2(Si1-xGex)2O7 single crystal

  Hitoshi Ohta, Kanji Kawakami, Yuji Inagaki, Susumu Okubo, Takashi Kunimoto, Zenji Hiroi

  Yukawa Institute for Theoretical Physics, 2002, Progress of Theoretical Physics, (145) (145), 95 - 100, English

  International conference proceedings


• ESR study of heavily doped GaAs : Er grown by organometallic vapor phase epitaxy

  J Yoshikawa, S Okubo, H Ohta, T Koide, T Kawamoto, Y Fujiwara, Y Takeda

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 302 - 305, English

  [Refereed]

  International conference proceedings


• Submillimeter and millimeter wave ESR measurements of one-dimensional edge-sharing CuO2 chain system Ca2Y2Cu5O10

  S Okubo, K Kawakami, H Ohta

  2002, TWENTY SEVENTH INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES, CONFERENCE DIGEST, 175 - 176, English

  [Refereed]

  International conference proceedings


• Millimeter and submillimeter wave ESR measurement of spin ladder system Sr(Cu1-xZnx)(2)O-3

  S Okubo, K Hazuki, T Sakurai, H Ohta, H Yoshida, M Azuma, M Takano

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 747 - 750, English

  [Refereed]

  International conference proceedings


• ESR measurement of heavily doped Si : Fe

  R Koyama, J Yoshikawa, T Kunimoto, S Okubo, H Ohta, H Nakayama

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 298 - 301, English

  [Refereed]

  International conference proceedings


• EPR evidence of onset of the quantum critical point in CuGeO3 : Fe

  SV Demishev, RV Bunting, H Ohta, S Okubo, Y Oshima, NE Sluchanko

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 741 - 746, English

  [Refereed]

  International conference proceedings


• High field ESR measurements (VO)(2)P2O7

  Y Nagasaka, T Kunimoto, S Okubo, H Ohta, T Yamauchi, Y Ueda

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 771 - 774, English

  [Refereed]

  International conference proceedings


• ESR study of frustrated spin chain [Cu(bpy)H2O][Cu(bpy)(mal)H2O](ClO4)(2)

  T Kunimoto, T Kamikawa, S Okubo, H Ohta, H Kikuchi

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 759 - 762, English

  [Refereed]

  International conference proceedings


• High field ESR measurements of Cu-2(C5H12N2)(2)Cl-4 under high pressure

  M Saruhashi, T Sakurai, K Kirita, T Kunimoto, S Okubo, H Ohta, H Kikuchi, Y Uwatoko

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 803 - 806, English

  [Refereed]

  International conference proceedings


• ESR study on magnetic ordering of spin-frustrated antiferromagnet ZnCr2O4 single crystal

  H Kikuchi, H Ohta, S Okubo, Kagomiya, I, M Toki, K Kohn, K Shiratori

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 755 - 758, English

  [Refereed]

  International conference proceedings


• Millimeter wave ESR measurements of (DMET)(2)FeBr4

  K Kirita, Y Inagaki, S Okubo, H Ohta, K Enomoto, A Miyazaki, T Enoki

  2002, MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 379, 29 - 34, English

  [Refereed]

  Scientific journal


• Frequency dependence millimeter wave ESR measurements of Et2Me2P[Pd(dmit)(2)](2)

  T Sakurai, Y Inagaki, S Okubo, H Ohta, R Kato, T Nakamura

  2002, MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 379, 59 - 64, English

  [Refereed]

  Scientific journal


• High field ESR study of BaCu2(Si1-Ge-x(x))(2)O-7 single crystal

  H Ohta, K Kawakami, Y Inagaki, S Okubo, T Kunimoto, Z Hiroi

  2002, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, (145) (145), 95 - 100, English

  [Refereed]

  Scientific journal


• X-band ESR measurements of Et2Me2P[Pd(dmit)(2)](2)

  T Sakurai, H Ohta, S Okubo, R Kato, T Nakamura

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 197 - 200, English

  [Refereed]

  International conference proceedings


• One dimensional behavior of mixed crystal BaCu2(Si1-xGex)(2)O-7 observed by submillimter wave ESR

  H Ohta, K Kawakami, S Okubo, Y Inagaki, T Kunimoto, Z Hiroi

  2002, TWENTY SEVENTH INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES, CONFERENCE DIGEST, 323 - 324, English

  [Refereed]

  International conference proceedings


• Millimeter wave ESR measurement of diamond chain substance azurite

  T Kamikawa, T Kunimoto, S Okubo, H Ohta, H Kikuchi

  2002, EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES, 763 - 766, English

  [Refereed]

  International conference proceedings


• Magnetism of C-60-Based molecular complexes: High-field-magnetization and magnetooptical study

  Demishev S. V, Sluchanko N. E, Weckhuysen L, Moshchalkov V. V, Ohta H, Okubo S, Oshima Y, Spitsina N. G

  2002, Physics of the Solid State, 44, 441 - 443

  [Refereed]


• ESR measurements of (DI-DCNQI)(2)Ag single crystals

  Sakurai T, Nakagawa N, Okubo S, Ohta H, Kanoda K, Hiraki K

  Jun. 2001, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 70(6) (6), 1794 - 1800

  [Refereed]


• ESR measurements of (DMe-DCNQI)(2)Li

  Sakurai T, Ohta H, Okubo S, Kanoda K, Hiraki K

  Mar. 2001, SYNTHETIC METALS, 120(1-3) (1-3), 851 - 852

  [Refereed]


• High-field AFMR measurement of Nd2BaNiO5 single crystal in the submillimeter wave region

  S Okubo, T Yamada, H Ohta, T Yokoo, J Akimitsu, H Nojiri, M Motokawa

  Jan. 2001, PHYSICA B, 294, 51 - 54, English

  [Refereed]

  Scientific journal


• High-field ESR study of kagome-like substance Cu3V2O7(OH)(2)center dot 2H(2)O

  S Okubo, H Ohta, K Hazuki, T Sakurai, N Kobayashi, Z Hiroi

  Jan. 2001, PHYSICA B, 294, 75 - 78, English

  [Refereed]

  Scientific journal


• High-Frequency ESR Measurements Using Pulsed Magnetic Fields in Kobe

  Ohta H, Okubo S, Sakurai T, Goto T, Kirita K, Ueda K, Uwatoko Y, Saito T, Azuma M, Takano M, Akimitsu J

  2001, Physica B, 294-295, 624 - 629, English

  [Refereed]

  International conference proceedings


• Observation of direct transition in S = (1)/(2) quantum spin system Cu-2(C5N12N2)(2)Cl-4 by high-field ESR

  Ohta H, Oshima Y, Sakurai T, Okubo S, Tanaka T, Koyama K, Motokawa M, Kikuchi H, Nagasawa H, Boucher J. P

  2001, Journal of Magnetism and Magnetic Materials, 226, 439 - 440

  [Refereed]


• Submillimeter wave ESR measurements of gapless S=1 antiferromagnetic bond alternating chain system

  H Ohta, S Okubo, S Kimura, S Takeda, H Kikuchi, H Nagasawa

  Jul. 2000, PHYSICA B, 284, 1627 - 1628, English

  [Refereed]

  Scientific journal


• High-field magnetization measurement of three-dimensional antiferromagnet Nd2BaNiO5 single crystal

  S Okubo, H Ohta, T Tanaka, T Yokoo, J Akimitsu

  Jul. 2000, PHYSICA B-CONDENSED MATTER, 284, 1475 - 1476, English

  [Refereed]

  Scientific journal


• Submillimeter-wave ESR measurements of low-dimensional quantum spin systems

  H Ohta, S Okubo, S Kimura, T Sakurai, S Takeda, T Tanaka, H Kikuchi, H Nagasawa

  2000, APPLIED MAGNETIC RESONANCE, 18(4) (4), 469 - 474, English

  [Refereed]

  Scientific journal


• Submillimeter-wave ESR measurements of Ca(1-x)CuO2 (x=0.164) with edge-sharing CuO2 chains

  A Ueda, H Ohta, S Okubo, Z Hiroi, M Okumura, M Takano

  2000, APPLIED MAGNETIC RESONANCE, 19(3-4) (3-4), 399 - 402, English

  [Refereed]

  Scientific journal


• Metamagnetic transitions of Lu2Cu2O5 studied by submillimeter-wave ESR measurement

  T Goto, S Kimura, S Okubo, H Ohta, M Motokawa

  2000, APPLIED MAGNETIC RESONANCE, 18(4) (4), 463 - 468, English

  [Refereed]

  Scientific journal


• Submillimeter wave ESR and high-field magnetization measurements of aligned powder sample of Nd₂BaNiO₅

  S. Okubo, H. Ohta, M. Hayashi, H. Nojiri, T. Sakon, I. Mogi, K. Watanabe, H. Kikuchi, H. Nagasawa, N. Kitamura

  Dec. 1999, Phys. Stat. Sol. B, 215, 1099 - 1107, English

  [Refereed]

  Scientific journal


• Submillimeter wave ESR study of magnetic excitations in the Ising ferromagnetic chain CoNb₂O₆

  T. Kunimoto, K. Nagasaka, H. Nojiri, S. Luther, M. Motokawa, H. Ohta, T. Goto, S. Okubo, K. Kohn

  Dec. 1999, J. Phys. Soc. Jpn., 68, 1703 - 1710, English

  [Refereed]

  Scientific journal


• Submillimeter wave ESR study of spin gap excitations in CuGeO₃

  H. Nojiri, H. Ohta, S. Okubo, O. Fujita, J. Akimitsu, M. Motokawa

  Dec. 1999, J. Phys. Soc. Jpn., 68, 3417 - 3423, English

  [Refereed]

  Scientific journal


• Circularly polarized cyclotron resonance measurement system and its application to BEDT-TTF salts

  Ohta H, Oshima Y, Nakagawa N, Akioka K, Okubo S, Kanoda K

  Jun. 1999, SYNTHETIC METALS, 103(1-3) (1-3), 1913

  [Refereed]


• X-band and millimeter wave ESR studies of (DI-DCNQI)(2)Ag

  Nakagawa N, Akioka K, Ohta H, Okubo S, Kanoda K, Hiraki K

  Jun. 1999, SYNTHETIC METALS, 103(1-3) (1-3), 1894 - 1895

  [Refereed]


• ESR study of Mott insulator kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl

  Ohta H, Nakagawa N, Akioka K, Nakashima Y, Okubo S, Kanoda K, Kitamura N

  Jun. 1999, SYNTHETIC METALS, 103(1-3) (1-3), 1914 - 1915

  [Refereed]


• High field phase transitions of quasi one-dimensional S=1/2 Heisenberg antiferromagnet Cu2(1,4-diazaycloheptane) 2Cl4 observed by submillimeter wave ESR

  H. Ohta, T. Tanaka, S. Okubo, S. Kimura, H. Kikuchi, H. Nagasawa

  Mar. 1999, J. Phys. Soc. Jpn., 65, 732, English

  [Refereed]

  Scientific journal


• Auger electron spectroscopy of super-doped Si:Mn thin films

  S. Abe, Y. Nakasima, S. Okubo, H. Nakayama, T. Nishino, H. Yanagi, H. Ohta, S. Iida

  Elsevier Science Publishers B.V., 1999, Applied Surface Science, 142(1) (1), 537 - 542, English

  Scientific journal


• Submillimeter wave ESR of triangular-kagome antiferromagnet Cu9X2(cpa)(6)(X=Cl, Br)

  S Okubo, M Hayashi, S Kimura, H Ohta, M Motokawa, H Kikuchi, H Nagasawa

  May 1998, PHYSICA B, 246, 553 - 556, English

  [Refereed]

  Scientific journal


• High-field AFMR measurement of Nd2BaNiO5 in submillimeter wave region

  S Okubo, H Ohta, M Hayashi, H Kikuchi, M Motokawa, H Nagasawa

  May 1998, PHYSICA B, 246, 219 - 221, English

  [Refereed]

  Scientific journal


• ESR study of Mott-Hubbard insulators YTiO3 and LaTiO3 in submillimeter wave region

  S. Okubo, S. Kimura, H. Ohta, M. Itoh

  May 1998, Physica B, 177-181, 1373, English

  [Refereed]

  Scientific journal


• Fermi surface study of alpha-(BEDT-TTF)(2)MHg(SCN)(4) by cyclotron resonance measurement

  Akioka K, Ohta H, Kimura S, Okubo S, Kanoda K, Motokawa M

  May 1998, PHYSICA B, 246, 311 - 314

  [Refereed]


• Millimeter and submillimeter wave ESR system: using 30T pulsed magnetic field

  N. Nakagawa, T. Yamada, K. Akioka, S. Okubo, S. Kimura, H. Ohta

  Feb. 1998, Int. J. Infrared MMW., 19, 167, English

  [Refereed]

  Scientific journal


• ESR measurements of quasi-one-dimensional antiferromagnet Sr3CuPtO6 in millimeter wave region

  T Arioka, H Ohta, S Okubo, R Kanno, N Kitamura

  Jan. 1998, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 177, 653 - 654, English

  [Refereed]

  Scientific journal


• Submillimeter wave ESR of Yb2Cu2O5

  Y Ikeuchi, H Ohta, S Okubo, M Motokawa, N Kitamura

  Jan. 1998, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 177, 765 - 766, English

  [Refereed]

  Scientific journal


• High-field magnetization measurement of (YxNd1-x)(2)BaNiO5

  S Okubo, M Hayashi, H Ohta, M Motokawa, H Kikuchi, H Nagasawa, N Kitamura

  Jan. 1998, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 177, 763 - 764, English

  [Refereed]

  Scientific journal


• Submillimeter wave ESR measurements of two-dimensional organic antiferromagnet beta '-(BEDT-TTF)(2)ICl2

  Akioka K, Ohta H, Okubo S, Miyagawa K, Kanoda K

  Jan. 1998, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 177, 746 - 747

  [Refereed]


• Morphology control of electrodeposits by high magnetic fields

  Mogi, I, S Okubo, M Kamiko

  Dec. 1997, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 61(12) (12), 1278 - 1282, Japanese

  [Refereed]

  Scientific journal


• PATTERN-FORMATION IN ELECTROLESS DEPOSITION

  MOGI, I, S OKUBO

  Jun. 1995, FRACTALS-AN INTERDISCIPLINARY JOURNAL ON THE COMPLEX GEOMETRY OF NATURE, 3(2) (2), 371 - 375, English

  [Refereed]

  Scientific journal


• EFFECT OF HIGH MAGNETIC FIELDS ON FRACTAL GROWTH OF SILVER METAL-FOREST

  S. Okubo, I. Mogi, G. Kido, Y. Nakagawa

  Sep. 1993, FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY, 1(3) (3), 425 - 429, English

  [Refereed]

  Scientific journal


• A MORPHOLOGICAL-STUDY OF ELECTROLESS DEPOSITION IN HIGH MAGNETIC-FIELDS

  S OKUBO, MOGI, I, Y NAKAGAWA

  Jun. 1993, SCIENCE REPORTS OF THE RESEARCH INSTITUTES TOHOKU UNIVERSITY SERIES A-PHYSICS CHEMISTRY AND METALLURGY, 38(2) (2), 383 - 389, English

  [Refereed]

  Scientific journal


• EFFECT OF HIGH MAGNETIC-FIELDS ON FRACTAL GROWTH OF LEAD METAL-LEAVES

  MOGI, I, S OKUBO, Y NAKAGAWA

  Mar. 1993, JOURNAL OF CRYSTAL GROWTH, 128(1-4) (1-4), 258 - 261, English

  [Refereed]

  Scientific journal


• DENSE RADIAL GROWTH OF SILVER METAL LEAVES IN A HIGH MAGNETIC-FIELD

  MOGI, I, S OKUBO, Y NAKAGAWA

  Oct. 1991, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 60(10) (10), 3200 - 3202, English

  [Refereed]

  Scientific journal


• 金属葉に及ぼす強磁場の影響

  大久保 晋, 茂木 巌, 中川 康昭

  The Crystallographic Society of Japan, 1990, 日本結晶学会誌, 32, 138 - 138, Japanese

• ESR and NMR studies of spin-1/2 low-dimensional antiferromagnet Ca₂Cu(OH)₄[B(OH)₄]₂

  林哉汰, 廣澤康平, 倉知豊, 丸山薫, 石川裕也, 浅野貴行, 光藤誠太郎, 菊池彦光, 高橋英幸, 長澤直生, 山本孟, 大道英二, 大久保晋, 大久保晋, 太田仁, 太田仁, 藤井裕

  2023, 日本物理学会講演概要集(CD-ROM), 78(1) (1)


• Observation of ESR localized modes in one-dimensional antiferromagnet henmilite

  林哉汰, 倉知豊, 石川裕也, 古谷峻介, 浅野貴行, 光藤誠太郎, 菊池彦光, 山本孟, 高橋英幸, 大道英二, 大久保晋, 大久保晋, 太田仁, 太田仁, 藤井裕

  2023, 日本物理学会講演概要集(CD-ROM), 78(2) (2)


• Development of high-pressure THz ESR and its application

  櫻井敬博, 高橋英幸, 大道英二, 大久保晋, 太田仁, 上床美也

  2023, 電子スピンサイエンス学会年会講演要旨集, 62nd (CD-ROM)


• ESR measurements of S=1/2 antiferromagnetic chain KCuMoO₄(OH) single crystal: IV

  大久保晋, 大久保晋, 恒石一義, 高橋英幸, 高橋英幸, 齋藤佑, 原茂生, 櫻井敬博, 大道英二, 高橋一志, 太田仁, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二

  2022, 日本物理学会講演概要集(CD-ROM), 77(1) (1)


• Application of THz Electron Spin Resonance to Low-dimensional Magnet

  大久保晋, 大久保晋, 恒石一義, 高橋英幸, 高橋英幸, 齋藤佑, 原茂生, 櫻井敬博, 大道英二, 高橋一志, 太田仁, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二

  2021, 映像情報メディア学会技術報告, 45(3(IST2021 1-7)) (3(IST2021 1-7))


• Angle-dependent force-detected terahertz ESR measurement of non-centrosymmetric magnet CuB₂O₄

  八谷大輝, 高橋英幸, 高橋英幸, 有馬孝尚, 有馬孝尚, 豊田新悟, 齋藤充, 大道英二, 大久保晋, 大久保晋, 太田仁, 太田仁

  2021, 日本赤外線学会誌, 31(1) (1)


• High Pressure THz ESR measurements of spin gap systems

  竹原良祐, 櫻井敬博, 大久保晋, 太田仁, 嵯峨慎

  2021, 日本物理学会講演概要集(CD-ROM), 76(1) (1)


• Pressure-induced nonmagnetic-magnetic transition in spin gap system Cu₂(C₅H₁₂N₂)₂Cl₄

  竹原良祐, 櫻井敬博, 嵯峨慎, 太田仁, 大久保晋

  2021, 日本物理学会講演概要集(CD-ROM), 76(2) (2)


• High frequency ESR measurements of dimer antiferromagnet CoSeO₃・2H₂O: II

  船越風太, 齋藤佑, 原茂生, 櫻井敬博, 高橋英幸, 大道英二, 大久保晋, 太田仁, 菊池彦光, 藤井裕

  2020, 日本物理学会講演概要集(CD-ROM), 75(1) (1)


• ESR measurements of S=1/2 antiferromagnetic chain KCuMoO₄(OH) single crystal: II

  恒石一義, 齋藤佑, 原茂生, 櫻井敬博, 高橋英幸, 高橋英幸, 大道英二, 高橋一志, 大久保晋, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二

  2020, 日本物理学会講演概要集(CD-ROM), 75(1) (1)


• Force-detected ESR measurement of chiral spin system copper metaborate CuB₂O₄

  八谷大輝, 高橋英幸, 高橋英幸, 有馬孝尚, 豊田新悟, 豊田新悟, 斉藤充, 荒川翔, 大道英二, 大久保晋, 太田仁

  2020, 日本物理学会講演概要集(CD-ROM), 75(1) (1)


• Force-detected terahertz ESR spectroscopy of non-centrosymmetric magnet CuB₂O₄

  八谷大輝, 高橋英幸, 高橋英幸, 有馬孝尚, 豊田新悟, 豊田新悟, 斉藤充, 荒川翔, 大道英二, 大久保晋, 太田仁

  2020, 日本物理学会講演概要集(CD-ROM), 75(2) (2)


• High frequency ESR measurements of dimer antiferromagnet CoSeO₃・2H₂O: III

  船越風太, 齋藤佑, 櫻井敬博, 高橋英幸, 大道英二, 大久保晋, 太田仁, 菊池彦光, 藤井裕, 原茂生

  2020, 日本物理学会講演概要集(CD-ROM), 75(2) (2)


• ESR measurements of S=1/2 antiferromagnetic chain KCuMoO₄(OH) single crystal: II

  恒石一義, 高橋英幸, 高橋英幸, 齋藤佑, 原茂生, 櫻井敬博, 大道英二, 高橋一志, 大久保晋, 大久保晋, 太田仁, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二

  2020, 日本物理学会講演概要集(CD-ROM), 75(2) (2)


• High Pressure ESR Study of Pressure Induced Magnetic Phase of Spin Gapped System CsFeCl₃

  大久保晋, 大久保晋, 鈴木哲平, 齋藤佑, 原茂生, 櫻井敬博, 高橋英幸, 高橋英幸, 大道英二, 太田仁, 太田仁, 松本正茂, 栗田伸之, 田中秀数

  2020, 電子スピンサイエンス学会年会講演要旨集, 59th (CD-ROM)


• Angle-dependent force-detected terahertz ESR spectroscopy of non-centrosymmetric magnet CuB₂O₄

  八谷大輝, 高橋英幸, 高橋英幸, 有馬孝尚, 豊田新悟, 豊田新悟, 斉藤充, 荒川翔, 大道英二, 大久保晋, 太田仁

  2020, 電子スピンサイエンス学会年会講演要旨集, 59th (CD-ROM)


• Development of Advanced THz ESR Spectroscopy for Heme Proteins with Integer Spin System

  二宮春菜, 西川佳那, 藤井浩, 岡本翔, 高橋英幸, 大久保晋, 大道英二, 太田仁, 堀谷正樹

  2020, 電子スピンサイエンス学会年会講演要旨集, 59th (CD-ROM)


• High frequency ESR measurements of spin dimer antiferromagnet CoSeO₃・2H₂O

  船越風太, 齋藤佑, 櫻井敬博, 高橋英幸, 大道英二, 大久保晋, 太田仁, 菊池彦光, 藤井裕, 原茂生

  2020, 電子スピンサイエンス学会年会講演要旨集, 59th (CD-ROM)


• Membrane Force-detected ESR measurements of S=1/2 antiferromagnetic chain KCuMoO₄(OH) micro single crystal

  恒石一義, 高橋英幸, 高橋英幸, 齋藤佑, 原茂生, 櫻井敬博, 大道英二, 高橋一志, 大久保晋, 大久保晋, 太田仁, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二

  2020, 電子スピンサイエンス学会年会講演要旨集, 59th (CD-ROM)


• High-pressure high-field ESR measurement of triangular lattice antiferromagnet CsCuCl₃

  櫻井敬博, 奥藤涼介, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高阪勇輔, 高阪勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2020, 日本物理学会講演概要集(CD-ROM), 75(1) (1)


• High-pressure high-field ESR measurement of triangular lattice antiferromagnet CsCuCl₃: II

  櫻井敬博, 奥藤涼介, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高阪勇輔, 高阪勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2020, 日本物理学会講演概要集(CD-ROM), 75(2) (2)


• 幾何学的スピン構造を持つ反強磁性体の強磁場ESRによる研究 III

  大久保晋, 大久保晋, 下城世那, 齋藤祐, 原茂生, 櫻井敬博, 岡本翔, 高橋英幸, 大道英二, 太田仁, 太田仁, 大熊隆太郎, 廣井善二

  2019, 日本物理学会講演概要集(CD-ROM), 74(1) (1)


• S=1/2反強磁性鎖KCuMoO₄(OH)の単結晶ESR測定

  恒石一義, 齋藤佑, 原茂生, 櫻井敬博, 高橋英幸, 大道英二, 高橋一志, 大久保晋, 太田仁, 那波和宏, 矢島健, 岡本佳比古, 廣井善二

  2019, 日本物理学会講演概要集(CD-ROM), 74(2) (2)


• 幾何学的スピン構造を持つ反強磁性体の強磁場ESRによる研究 IV

  大久保晋, 大久保晋, 下城世那, 齋藤佑, 原茂生, 櫻井敬博, 岡本翔, 高橋英幸, 大道英二, 太田仁, 太田仁, 大熊隆太郎, 廣井善二

  2019, 日本物理学会講演概要集(CD-ROM), 74(2) (2)


• 圧力下における三角格子反強磁性体CsCuCl₃の相互作用パラメータの評価

  奥藤涼介, 櫻井敬博, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高橋勇輔, 高橋勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2019, 日本物理学会講演概要集(CD-ROM), 74(1) (1)


• 25T無冷媒型超伝導磁石を用いた直交ダイマー系SrCu₂(BO₃)₂の高圧下ESR

  櫻井敬博, 奥藤涼介, 木村尚次郎, 木俣基, 野尻浩之, 太田仁, 大久保晋, 上床美也, 工藤一貴, 小池洋二

  2019, 日本物理学会講演概要集(CD-ROM), 74(1) (1)


• 高圧下強磁場ESR装置における圧力較正手法の開発

  櫻井敬博, 安谷佳将, 奥藤涼介, 大久保晋, 太田仁, 菅原仁, 上床美也

  2019, 高圧討論会講演要旨集, 60th


• 圧力下における三角格子反強磁性体CsCuCl₃の相互作用パラメータの評価 II

  奥藤涼介, 櫻井敬博, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高橋勇輔, 高橋勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2019, 日本物理学会講演概要集(CD-ROM), 74(2) (2)


• パルス強磁場を用いた圧力下ESR装置の開発

  櫻井敬博, 奥藤涼介, 赤木暢, 木田孝則, 萩原政幸, 大久保晋, 太田仁

  2019, 日本物理学会講演概要集(CD-ROM), 74(2) (2)


• S=1/2カゴメ格子反強磁性体Ca‐kapellasiteの圧力下の磁性

  鈴木哲平, 齋藤佑, 原茂生, 櫻井敬博, 大久保晋, 太田仁, 赤木暢, 鳴海康雄, 萩原政幸, 吉田紘行

  21 Sep. 2018, 日本物理学会講演概要集(CD-ROM), 73(2) (2), ROMBUNNO.9aPS‐65, Japanese


• 幾何学的スピン構造をもつ反強磁性体の強磁場ESRによる研究 II

  下城世那, 大久保晋, 齋藤佑, 原茂生, 櫻井敬博, 岡本翔, 高橋英幸, 大道英二, 太田仁, 大熊隆太郎, 廣井善二

  2018, 日本物理学会講演概要集(CD-ROM), 73(2) (2)


• High-Field ESR Study of High-spin Metal Ion Type Hexaaqua Complex: Ecaluation of Tuton’s Salt as Pressure Standard for High-Pressure ESR Spectroscopy

  齋藤佑, 岡本翼, 大道英二, 櫻井敬博, 原茂夫, 大久保晋, 太田仁, 太田仁

  2018, 電子スピンサイエンス学会年会講演要旨集, 57th


• ESR measurements of S=1/2 distorted diamond chain (Cu₃(OH)₂(CH₃CO₂)₂(H₂O)_xXy II

  大久保晋, 宮崎大輔, 岡本翔, 高橋英幸, 大道英二, 齋藤祐, 原茂生, 櫻井敬博, 太田仁, 太田仁, 入澤明典, 藤田渉

  2018, 電子スピンサイエンス学会年会講演要旨集, 57th


• 三角格子反強磁性体CsCuCl₃のプラトー領域における圧力下強磁場ESR

  櫻井敬博, 大木瑛登, 石村謙斗, 岡本翔, 高橋英幸, 肘井敬吾, 大道英二, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高坂勇輔, 高坂勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也

  2018, 日本物理学会講演概要集(CD-ROM), 73(1) (1)


• ハイブリッド型圧力セルを用いた多重極限ESR装置の開発と応用

  奥藤涼介, 櫻井敬博, 高橋英幸, 肘井敬吾, 大道英二, 大久保晋, 太田仁, 上床美也, 田中秀数

  2018, 日本物理学会講演概要集(CD-ROM), 73(2) (2)


• 25T無冷媒超伝導磁石を用いた2.5GPa高圧ESR装置の開発と応用

  櫻井敬博, 木村尚次郎, 木俣基, 野尻浩之, 淡路智, 大久保晋, 太田仁, 上床美也, 工藤和也, 小池洋二

  2018, Selected Topics Research Highlight at HFLSM, 2017


• 金属ポルフィリン錯体ヘミンのTHz-ESR測定

  岡本翔, 大道英二, 大久保晋, 太田仁

  2017, 日本赤外線学会研究発表会資料, 27th


• 多重極限THz ESRの現状と展望

  太田仁, 櫻井敬博, 大久保晋, 大道英二, 高橋英幸

  2017, 日本赤外線学会研究発表会資料, 27th


• ヘムタンパク質モデル錯体ヘミンの多周波ESR測定

  岡本翔, 大道英二, 大久保晋, 太田仁

  2017, 日本物理学会講演概要集(CD-ROM), 72(1) (1)


• Precision ESR Spectroscopy of Hemin in High-field and Terahertz Region

  岡本翔, 大道英二, 大久保晋, 江間文俊, 小堀康博, 太田仁

  2017, 電子スピンサイエンス学会年会講演要旨集, 56th


• ESR Measurement of Hemin under High Pressure employing High-field/Multiple-frequency in THz-region

  斎藤佑, 岡本翔, 大木瑛登, 櫻井敬博, 原茂夫, 大道英二, 大久保晋, 大久保晋, 太田仁, 太田仁, 太田仁

  2017, 電子スピンサイエンス学会年会講演要旨集, 56th


• Developments of Multi-Extreme Terahertz ESR and Its Perspectives

  太田仁, 大久保晋, 大道英二, 櫻井敬博, 高橋英幸

  2017, 電子スピンサイエンス学会年会講演要旨集, 56th


• KCuCl₃における圧力下THz-ESR測定による圧力誘起相転移の観測

  櫻井敬博, 平尾祐樹, 大久保晋, 太田仁, 上床美也, 田中秀数

  2017, 日本物理学会講演概要集(CD-ROM), 72(1) (1)


• 三角格子反強磁性体CsCuCl₃のテラヘルツ領域における圧力下ESR測定

  大木瑛登, 櫻井敬博, 肘井敬吾, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高橋勇輔, 高橋勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2017, 日本赤外線学会研究発表会資料, 27th


• 量子磁性体CsCuCl₃の高圧下THz-ESR測定

  櫻井敬博, 大木瑛登, 肘井敬吾, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高坂勇輔, 高坂勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2017, 高圧討論会講演要旨集, 58th


• NaCuMoO₄(OH)の磁場中配向試料によるテラヘルツESR測定

  北原 遥子, 原 茂生, 櫻井 敬博, 大久保 晋, 太田 仁, 木村 史子, 木村 恒久, 那波 和宏, 岡本 佳比古, 廣井 善二

  日本赤外線学会, Aug. 2016, 日本赤外線学会誌 = Journal of the Japan Society of Infrared Science and Technolog, 26(1) (1), 56 - 61, Japanese


• 多重極限THz ESRの現状

  太田仁, 櫻井敬博, 大久保晋, 大道英二, 高橋英幸

  2016, 日本赤外線学会研究発表会資料, 26th


• 多重極限THz ESRの開発とその応用

  太田仁, 大久保晋, 大道英二, 櫻井敬博, 高橋英幸

  2016, 電子スピンサイエンス学会年会講演要旨集, 55th


• 高圧下サブミリ波ESR装置の開発と量子スピン系への応用

  大木瑛登, 櫻井敬博, 平尾祐樹, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高橋勇輔, 高橋勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2016, 日本赤外線学会研究発表会資料, 26th


• 新しい高圧下強磁場ESR装置の開発と量子スピン系への応用

  大木瑛登, 櫻井敬博, 平尾祐樹, 大久保晋, 太田仁, 上床美也, 田中秀数, 世良文香, 世良文香, 高坂勇輔, 高坂勇輔, 秋光純, 秋光純, 世良正文, 井上克也, 井上克也, 井上克也

  2016, 電子スピンサイエンス学会年会講演要旨集, 55th


• テラヘルツ領域における圧力下ESR装置の開発とスピンギャップ系への応用

  平尾祐樹, 大木瑛登, 櫻井敬博, 太田仁, 大久保晋, 上床美也, 野尻浩之, 木村尚次郎, 田中秀数

  2016, 電子スピンサイエンス学会年会講演要旨集, 55th


• 多重極限THz ESRの開発とその応用

  太田仁, 櫻井敬博, 大久保晋, 大道英二, 高橋英幸

  2015, 日本赤外線学会研究発表会資料, 2015


• 多重極限THz ESRの最近の進展とその量子スピン系への応用

  太田仁, 太田仁, 大久保晋, 大道英二, 櫻井敬博, 高橋英幸

  2015, 電子スピンサイエンス学会年会講演要旨集, 54th


• SrCu₂(BO₃)₂の圧力下強磁場ESR

  櫻井敬博, 平尾祐樹, 肘井敬吾, 大久保晋, 太田仁, 松林和幸, 上床美也, 工藤一貴, 小池洋二

  2015, 電子スピンサイエンス学会年会講演要旨集, 54th


• 9aAG-1 Development of high pressure cyclotron resonance measurement system and application to Dirac electron system

  Matsui R., Sakurai T., Okubo S., Ohta H., Kato R., Suda M., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 611 - 611, Japanese


• 7aPS-131 High field ESR measurements of 2 dimensional antiferromagnets Sr_2MO_3X(M=Cr,Ni X=F,Cl)

  Yoshida S., Hara S., Sakurai T., Okubo S., Ohta H., Tsujimoto Y., Yamaura K., Uchikoshi T.

  The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 262 - 262, Japanese


• 7aPS-147 High field ESR measurements of quasi one dimensional frustrated magnet NaCuMoO_4(OH)

  Kitahara Y., Hara S., Sakurai T., Okubo S., Ohta H., Nawa K., Okamoto Y., Hiroi Z.

  The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 265 - 265, Japanese


• 7pPSA-85 Development of ESR system under high pressure using micro-coil

  Kawasaki K., Ohmichi E., Sakurai T., Ohta H., Okubo S., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 281 - 281, Japanese


• 9aBC-10 High field ESR measurements of YCrO_3 and related substance

  Ikeda S., Okubo S., Hara S., Sakurai T., Ohta H., Kao T. H., Sakurai Y., Yang H. D.

  The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 302 - 302, Japanese


• 8pBC-4 ESR study of CuB_2O_4

  Arakawa S., Sakurai T., Hara S., Okubo S., Ohta H., Saito M., Arima T.

  The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 294 - 294, Japanese


• 7aBC-3 Sensitivity improvement and application of high pressure, high field and mulit-frequency ESR system

  Sakurai T., Matsui R., Okubo S., Ohta H., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69(2) (2), 245 - 245, Japanese


• スピネル化合物GeCo₂O₄の単結晶試料によるESR測定 4

  大久保晋, 伊島竜哉, 山崎竜哉, ZHANG W, 太田仁, 原茂生, 櫻井敬博, 池田伸一, 大島弘行, 高橋美和子, 富安啓輔, 渡辺忠孝

  22 Aug. 2014, 日本物理学会講演概要集, 69(2) (2), 306, Japanese


• 27aAF-11 High-field ESR measurements of S=1/2 Kagome Antiferromagnet [Cu_3(CO_3)_2(bpe)_3]・2ClO_4

  Okubo S., Takamoto K., Takahashi N., Zhang W., Sakurai T., Ohta H., Taniguchi T., Nakata H., Kikuchi H., Fujii Y.

  The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 471 - 471, Japanese


• 27aPS-59 High-field ESR measurements of YCaCrO_4

  Ikeda S., Okubo S., Hara S., Sakurai T., Ohta H., Kao T. H., Sakurai Y., Yang H. D.

  The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 488 - 488, Japanese


• 27aPS-125 Sensitivity improvement of high pressure, high field and high frequency ESR system

  Sakurai T., Matsui R., Okubo S., Ohta H., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 504 - 504, Japanese


• ミリ波サブミリ波領域における圧力下ESR測定技術の開発と応用

  川崎航平, 松井亮輔, 大道英二, 櫻井敬博, 太田仁, 大久保晋, 松林和幸, 上床美也

  2014, 日本赤外線学会研究発表会資料, 2014


• Numerical study on the nontrivial field-induced phase transition on the honeycomb antiferromagnet

  Shimokawa Tokuro, Okubo Susumu, Ohta Hitoshi

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 361 - 361, Japanese


• High field ESR measurements of S=1/2 kagome magnet [Cu_3(CO_3)_2(bpe)_3]・2ClO_4

  Takamoto K., Takahashi N., Zhang W., Okubo S., Ohta H., Sakurai T., Taniguchi T., Nakata H., Kikuchi H., Fujii Y.

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 403 - 403, Japanese


• Cu/Si-NMR study on S=1/2 low-dimensional antiferromagnet Dioptase

  松井 一樹, 後藤 貴行, 藤澤 真士, 大久保 晋, 太田 仁, 佐々木 孝彦, 淡路 智, 渡辺 和雄

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 409 - 409, Japanese


• High-frequency ESR measurements of YCrO_3

  Ikeda S., Zhang W., Sakurai T., Okubo S., Ohta H., Sakurai Y.

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 448 - 448, Japanese


• Optimization of pressure cell for high pressure and high field ESR system

  Matsui R., Sakurai T., Okubo S., Ohta H., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 396 - 396, Japanese


• High-field ESR Measurements of Cs_3V_2Cl_9

  Arakawa S., Sakurai T., Okubo S., Ohta H., Kikuchi H., Tanaka T., Fujii Y., Fujisawa M., Hagihara M., Masuda T., Matsuo A., Kindo K.

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 389 - 389, Japanese


• Development of high pressure ESR system using mini coil

  Sakurai T., Matsui R., Ohmichi E., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68(2) (2), 396 - 396, Japanese


• スピネル化合物GeCo₂O₄の単結晶試料によるESR測定 3

  伊島竜哉, 山崎達也, ZHANG W, 大久保晋, 太田仁, 櫻井敬博, 池田伸一, 大島弘行, 高橋美和子, 原茂生, 富安啓輔, 渡辺忠孝

  26 Aug. 2013, 日本物理学会講演概要集, 68(2) (2), 420, Japanese


• 26pXW-7 Magnetic Anisotropy of S=1/2 Antiferromagnet CuO by Terahertz ESR measurements

  Okubo S., Kobayashi T., Zhang W., Ohta H., Sakurai T., Zheng X. G., Nishihara S., Fujisawa M., Kikuchi H., Matsuoka E., Sugawara H.

  The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 533 - 533, Japanese


• 26aPS-61 S=1カゴメ格子反強磁性体KV_3Ge_2O_9の強磁場ESR測定(26aPS 領域3ポスターセッション,領域3(磁性,磁気共鳴))

  高本 圭祐, 中田 亮平, 張 衛民, 大久保 晋, 太田 仁, 櫻井 敬博, 原 茂生, 佐藤 博彦

  一般社団法人日本物理学会, 26 Mar. 2013, 日本物理学会講演概要集, 68(1) (1), 512 - 512, Japanese


• 26aXW-9 Development and application of high pressure and high field ESR system using hybrid type pressure cell

  Sakurai T., Fujimoto K., Okubo S., Ohta H., Matsubayashi K., Uwatoko Y.

  The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 495 - 495, Japanese


• 26aXY-6 ESR measurements of Cr Jarosite II

  Nakata R., Takahashi N, Shimokawa T., Sakurai T., Zhang W., Okubo S., Ohta H., Okuta K., Hara S., Sato H.

  The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68(1) (1), 496 - 496, Japanese


• スピネル化合物GeCo₂O₄の単結晶試料によるESR測定 2

  伊島竜哉, 山崎達也, 大久保晋, ZHANG W, 太田仁, 櫻井敬博, 池田伸一, 大島弘行, 高橋美和子, 原茂生, 富安啓輔, 渡辺忠孝

  05 Mar. 2013, 日本物理学会講演概要集, 68(1) (1), 557, Japanese


• 多重極限THz電子スピン共鳴の開発と応用

  太田仁, 大久保晋, 大道英二, 櫻井敬博, 原茂生

  2013, 日本赤外線学会研究発表会資料, 23rd


• 多重極限テラヘルツESRの開発とその応用

  太田仁, 大久保晋, 大道英二, 櫻井敬博, 下川統久朗

  2013, 電子スピンサイエンス学会年会講演要旨集, 52nd


• 電磁波透過型圧力セルを用いた圧力下多周波数ESR装置の開発

  松井亮輔, 櫻井敬博, 大久保晋, 太田仁, 松林和幸, 上床美也

  2013, 電子スピンサイエンス学会年会講演要旨集, 52nd


• 18aPSA-69 High Field ESR measurements of Sr_2CrO_4

  Takamoto K., Nakata R., Zhang W., Okubo S., Ohta H., Sakurai T., Rani Malika, Ahmad Javed, Sakurai H.

  The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 393 - 393, Japanese


• 18pPSA-43 Development of hybrid pressure cell for high field ESR under pressure

  Fujimoto K., Sakurai T., Ohta H., Okubo S., Uwatoko Y.

  The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 409 - 409, Japanese


• 18pCC-5 Impurity effect of S=1/2 two-leg ladder substance (pipdH)_2CuBr_4

  Yokoyama C., Takahashi N., Zhang W., Okubo S., Sakurai T., Matsuoka E., Sugawara H., Kikuchi H.

  The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 395 - 395, Japanese


• 20aCD-7 ESR measurements of Cr Jarosite II

  Nakata R., Takahashi N., Shimokawa T., Sakurai T., Zhang W., Okubo S., Ohta H., Okuda K., Hara S., Sato H.

  The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 429 - 429, Japanese


• 20aCD-5 High field ESR Study of DM interaction on S=3/2 Honeycomb Antiferromagnet Bi_3Mn_4O_<12>(NO_3)

  Okubo S., Ueda T., Ohta H., Zhang W., Sakurai T., Onishi N., Azuma M., Shimakawa Y., Nakano H., Sakai T.

  The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 429 - 429, Japanese


• スピネル化合物GeCo₂O₄の単結晶試料によるESR測定

  伊島竜哉, 山崎達也, 大久保晋, 太田仁, 櫻井敬博, 池田伸一, 大島弘行, 高橋美和子, 原茂生, 富安啓輔, 渡辺忠孝

  24 Aug. 2012, 日本物理学会講演概要集, 67(2) (2), 397, Japanese


• 25aBG-1 ESR measurements of Cr Jarosite

  Nakata R., Takahashi N., Zhang W., Okubo S., Ohta H., Okuda K., Hara S., Sato H.

  The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 509 - 509, Japanese


• 24aPS-109 Improvement of sensitivity in high pressure and high field ESR system

  Fujimoto K., Goto R., Sakurai T., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 500 - 500, Japanese


• 24aPS-71 Non magnetic impurity effect of (C_5H_<12>N)_2CuBr_4

  Yokoyama C., Zhang W., Okubo S., Sakurai T., Ohta H., Matsuoka E., Sugawara H., Kikuchi H.

  The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 491 - 491, Japanese


• 24aPS-110 Development of high pressure ESR technique with new detection method

  Sakurai T., Fujimoto K., Goto R., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 501 - 501, Japanese


• 27aCE-3 Study of the Er concentration-dependency for GaAa:Er,O indicating photolumineacent by X-band ESR

  Zhang W., Fukuoka Y., Okubo S., Ohta H., Fujisawa M., Fujiwara Y.

  The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 754 - 754, Japanese


• 24aSA-5 High field ESR measurements of S=1/2 1D Heisenberg Antiferromagnet Cu_2(OH)_4SO_4 II

  Okubo S., Takahashi N, Zhang W., Sakurai T., Ohta H, Kikuchi H., Hara S., Sato H

  The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67(1) (1), 473 - 473, Japanese


• S=1/2カゴメ格子反強磁性体のESRによる研究

  OTA HITOSHI, OKUBO SUSUMU, ZHANG W, SAKURAI TAKAHIRO, OKAMOTO YOSHIHIKO, HIROI ZENJI, YOSHIDA HIROYUKI

  05 Mar. 2012, 日本物理学会講演概要集, 67(1) (1), 511, Japanese


• スピネル化合物GeCo₂O₄単結晶試料のテラヘルツESR測定

  伊島竜哉, 山崎達也, 大久保晋, 太田仁, 櫻井敬博, 池田伸一, 大島弘行, 高橋美和子, 原茂生, 富安啓輔, 渡辺忠孝

  2012, 日本赤外線学会研究発表会資料, 2012, 46 - 47, Japanese


• 21aPS-131 Development of high magnetic field ESR system using bucket resonator

  Nakata R., Kobayashi T., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 403 - 403, Japanese


• 21pGM-6 High Field ESR Measurements of S=1/2 1D Heisenberg Antiferromagnetic System Cu_3(OH)_4SO_4 Single Crystal

  Takahashi N., Okubo S., Sakurai T., Ohta H., Kikuchi H., Hara S., Sato H.

  The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 408 - 408, Japanese


• 21aPS-130 Development of ESR measurement system for pulsed high magnetic field under very low temperature

  Yokoyama C., Kobayashi T., Okubo S., Sakurai T., Ohta H.

  The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 403 - 403, Japanese


• 21aGH-7 Development of high pressure ESR technique using SQUID magnetometer

  Sakurai T., Fujimoto K., Goto R., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), 370 - 370, Japanese


• スピネル化合物GeCo₂O₄の単結晶ESR測定 II

  山崎達也, 大久保晋, 太田仁, 櫻井敬博, 池田伸一, 大島弘行, 高橋美和子, 原茂生, 富安啓輔, 渡辺忠孝

  24 Aug. 2011, 日本物理学会講演概要集, 66(2) (2), 429, Japanese


• 22aGP-10 High-field ESR measurements beyond the saturation field of 1D diamond chain Cu_3(CO_3)_2(OH)_2

  Kobayashi T, Okubo S, Ohta H, Sakurai T, Nishihara S, Fujisawa M, Kikuchi H

  The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), Japanese


• 22pGH-7 High field ESR measurements of frustrated spin system Dolerophanite Cu_2O(SO_4)

  Okubo S, Takahashi N, Zhang W, Sakurai T, Ohta H, Fujisawa M, Kikuchi H

  The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), Japanese


• 21pTL-7 Ferromagnetic State of GdN Thin Film Studied by Ferromagnetic Resonance II

  Fukuoka Y, Fujisawa M, Zhang W, Okubo S, Ohta H, Yoshitomi H, Kitayama S, Kita T, Wada O

  The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66(2) (2), Japanese


• S=1/2カゴメ格子反強磁性体の強磁場ESRによる研究 II

  ZHANG W, OKUBO SUSUMU, OTA HITOSHI, SAKURAI TAKAHIRO, OKAMOTO YOSHIHIKO, HIROI ZENJI, YOSHIDA HIROYUKI

  24 Aug. 2011, 日本物理学会講演概要集, 66(2) (2), 399, Japanese


• 28aTK-5 Development of cyclotron resonance technique under high pressure and its application

  Goto R., Sakurai T., Okubo S., Ohta H., Kato R.

  The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 889 - 889, Japanese


• 25aPS-71 Development of high pressure ESR technique using SQUID magnetometer and its application

  Sakurai T., Goto R., Takahashi N., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66(1) (1), 472 - 472, Japanese


• スピネル化合物GeCo₂O₄の単結晶ESR測定

  山崎達也, 大久保晋, 太田仁, 櫻井敬博, 池田伸一

  03 Mar. 2011, 日本物理学会講演概要集, 66(1) (1), 504, Japanese


• 25aPS-34 Cu/Si-NMR study on S=1/2 low-dimensional antiferromagnet Dioptase

  萩原 健太, 後藤 貴行, 造田 法弥, 藤澤 真士, 大久保 晋, 櫻井 敬博, 大道 英二, 太田 仁

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


• 25aPS-62 Development and application of high-frequency and high-field ESR equipment using FIR laser.

  Kobayahsi T, Okubo S, Ohta H, Sakurai T, Matsuo A, Kindo K, Zheng X. G, Nishihara S, Fujisawa M, Kikuchi H

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


• 27pHF-2 High Field ESR Measurements of S=1/2 1D Heisenberg Antiferromagnetic Zigzag Chain (VO)(SO_4)(2,2-bpy) II

  Takahashi N, Okubo S, Ohta H, Sakurai T, Fujisawa M, Ishikawa Y, Kikuchi H

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


• 25pHD-3 Ferromagnetic State of GdN Thin Film Studied by Ferromagnetic Resonance II

  Fukuoka Y, Fujisawa M, Zhang W, Okubo S, Ohta H, Yoshitomi H, Kitayama S, Kita T, Wada O

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


• カゴメ格子磁性体Cu₃V₂O₇(OH)₂・2H₂Oのサブミリ波ESR II

  CHO EIMIN, OKUBO SUSUMU, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, OKAMOTO YOSHIHIKO, HIROI ZENJI, YOSHIDA HIROYUKI

  03 Mar. 2011, 日本物理学会講演概要集, 66(1) (1), 468, Japanese


• S=1/2低次元反強磁性体DioptaseのCu/Si-NMR V

  萩原健太, 後藤貴行, 造田法弥, 藤澤真士, 大久保晋, 櫻井敬博, 大道英二, 太田仁

  2011, 日本物理学会講演概要集, 66(1) (1)


• 多重極限テラヘルツ強磁場電子スピン共鳴装置の開発

  太田仁, 大久保晋, 大道英二, 櫻井敬博

  2011, 日本赤外線学会定例研究会資料, 60th


• 多周波数ESR測定によるハニカム格子反強磁性体InCu_2/3V_1/3O₃の特異なスピンダイナミクスの観測

  大久保晋, 和田秀雄, 太田仁, 太田仁, 冨田崇弘, 藤澤真士, 櫻井敬博, 大道英二, 菊池彦光

  2011, 電子スピンサイエンス学会年会講演要旨集, 50th


• 21aPS-91 High field ESR of cluster magnet V_4S_9Br_4

  Fujimoto K, Sakurai T, Ohta H, Okubo S, Tomioka Y, Waki T, Tabata Y

  The Physical Society of Japan, 2011, Meeting Abstracts of the Physical Society of Japan, 66(0) (0), Japanese


• Development of high pressure ESR technique using SQUID magnetometer

  SAKURAI Takahiro, TAKAHASHI Naoki, GOTO Ryoji, OKUBO Susumu, OHTA Hitoshi

  11 Oct. 2010, 高圧討論会講演集, 51, 119 - 119, Japanese


• 25aPS-55 High-field ESR measurements of CuO using FIR laser

  Kobayashi T., Tomoo M., Zhang W., Okubo S., Sakurai T., Ohta H., Zheng X. G.

  The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 411 - 411, Japanese


• 26aRB-7 Development of ESR technique using SQUID magnetometer and its application to organic conductor

  Goto R., Takahashi N., Sakurai T., Ohkubo S., Ohta H.

  The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 829 - 829, Japanese


• 23pWL-6 Development of multi-frequency ESR technique using SQUID magnetometer

  Sakurai T., Goto R., Takahashi N., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65(2) (2), 369 - 369, Japanese


• 23pWL10 High frequency ESR measurements of S=3/2 honeycomb lattice antiferromagnet Bi_3Mn_4O_<12>(NO_3)

  Yu Y, Zhang W, Elmasry F, Sakurai T, Fujisawa M, Okubo S, Ohta H, Sumirnova O. A, Onishi N, Azuma M, Kumada N

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


• 23pWP-8 High Field ESR Measurements of Bond Alternating Chain System Pb2_V_3O_3 using FIR Laser

  Okubo S, Kondo K, Hino S, Sakurai T, Ohta H, Fujisawa M, Nanami K, Michioka C, Kato M, Wake T, Yoshimura K

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


• 24pWL-2 ESR measurements of Co_2(OH)_3Br

  Tomoo Mizuki, Okubo Susumu, Fujisawa Masashi, Sakurai Takahiro, Ohmichi Eiji, Ohta Hitoshi, Kikuchi Hikomitsu, Hagihala Masato, Zheng Xu-Guang

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


• 25pPSA-33 High Field ESR Measurements of S=1/2 1D Heisenberg Antiferromagnetic Zigzag Chain (VO)(SO_4)(2,2-bpy)

  Takahashi N, Okubo S, Ohta H, Sakurai T, Fujisawa M, Kikuchi H

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


• 25pPSA-34 High field ESR measurements of quantum spin system (2,3-dmpyH)_2CuBr_4

  Yamasaki T, Okubo S, Masashi M, Ohto H, Sakurai T, Kikuchi H

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


• 25pPSA-36 Cu/Si-NMR study on S=1/2 low-dimensional ultiferromagnet Dioptase

  萩原 健太, 後藤 貴行, 造田 法弥, 藤澤 真士, 大久保 晋, 櫻井 敬博, 大道 英二, 太田 仁

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


• 25pPSA-40 Crystal structure and magnetism of S=1/2 antiferromagnet dioptase

  Fujisawa M, Souda N, Okubo S, Sakurai T, Ohmichi E, Ohta H, Inagaki Y, Kikuchi H, Ono T, Tanaka H

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


• カゴメ格子磁性体BaCu₃V₂O₈(OH)₂のサブミリ波ESR III

  ZHANG W, OKUBO SUSUMU, TOMOO MIZUKI, SAKURAI TAKAHIRO, OTA HITOSHI, OKAMOTO YOSHIHIKO, YOSHIDA HIROYUKI, HIROI ZENJI

  18 Aug. 2010, 日本物理学会講演概要集, 65(2) (2), 443, Japanese


• 20pGC-4 High field ESR measurements of magnetically aligned sample of S=3/2 honeycomb lattice antiferromagnet Bi_3Mn_4O_<12>(NO_3)II

  Yu Y, Zhang W, Elmasry F, Sakurai T, Fujisawa M, Okubo S, Ohta H, Sumirnova O, Onishi N, Azuma M, Kumada N

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


• 21pGJ-2 Cu/Si-NMR study on S=1/2 low-dimensional antiferromagnet Dioptase

  萩原 健太, 後藤 貴行, 造田 法弥, 藤澤 真士, 大久保 晋, 櫻井 敬博, 大道 英二, 太田 仁, 稲垣 祐次, 菊池 彦光, 小野 俊雄, 田中 秀数, 上床 美也

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


• 21pGJ-3 Terahertz ESR Measurements of Damond Chain Substance Cu_3(OH)_2(MoO_4)_9 II

  Okubo S, Matsumi N, Hino S, Fujisawa M, Sakurai T, Ohta H, Kikuchi H

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


• 21pGJ-13 X-band ESR measurement of S=1/2 spin ladder [Ph(NH_3)]([18]crown-6)[Ni(dmit)_2]

  Fujisawa M, Asakura A, Okubo S, Ohta H, Nishihara S, Akutagawa T, Nakamura T, Hosokoshi Y

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


• 22pPSA-59 ESR measurement using SQUID magnetometer

  Sakurai T, Fujisawa M, Okubo S, Ohta H

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


• 23aGJ-13 ESR measurements of Co_2(OH)_3Br

  Tomoo Mizuki, Okubo Susumu, Fujisawa Masashi, Sakurai Takahiro, Ohmichi Eiji, Ohta Hitoshi, Kikuchi Hikomitsu, Hagihala Masato, Zheng Xu-Guang

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


• S=1/2カゴメ格子反強磁性体の強磁場ESRによる研究

  ZHANG W, OKUBO SUSUMU, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, OKAMOTO YOSHIHIKO, HIROI ZENJI, YOSHIDA HIROYUKI

  01 Mar. 2010, 日本物理学会講演概要集, 65(1) (1), 473, Japanese


• S=1/2低次元反強磁性体DioptaseのCu/Si-NMR III

  萩原健太, 後藤貴行, 造田法弥, 藤澤真士, 大久保晋, 櫻井敬博, 大道英二, 太田仁, 太田仁, 稲垣祐次, 菊池彦光, 小野俊雄, 田中秀数, 上床美也

  2010, 日本物理学会講演概要集, 65(1) (1)


• Co₂(OH)₃BrのESR測定

  友尾水樹, 大久保晋, 藤澤真士, 櫻井敬博, 大道英二, 太田仁, 太田仁, 菊池彦光, 萩原雅人, ZHENG Xu-Guang

  2010, 日本物理学会講演概要集, 65(1) (1)


• S=1/2低次元反強磁性体DioptaseのCu/Si-NMR IV

  萩原健太, 後藤貴行, 造田法弥, 藤澤真士, 大久保晋, 櫻井敬博, 大道英二, 太田仁, 太田仁

  2010, 日本物理学会講演概要集, 65(2) (2)


• Co₂(OH)₃BrのESR測定 II

  友尾水樹, 大久保晋, 藤澤真士, 櫻井敬博, 大道英二, 太田仁, 太田仁, 菊池彦光, 萩原雅人, ZHENG Xu-Guang

  2010, 日本物理学会講演概要集, 65(2) (2)


• 55Tパルス磁場を用いたテラヘルツESRによるS=1/2反強磁性体dioptaseの反強磁性共鳴の観測

  太田仁, 藤澤真士, 大久保晋, 造田法弥, 友尾水樹, 櫻井敬博, 大道英二, 菊地彦光, 小野俊雄, 田中秀数

  2010, 日本赤外線学会研究発表会資料, 2010


• 量子スピン系dioptaseの強磁場ESR

  太田仁, 太田仁, 藤澤真士, 造田法弥, 大久保晋, 友尾水樹, 大道英二, 櫻井敬博, 菊池彦光, 小野俊雄, 田中秀数

  2010, 電子スピンサイエンス学会年会講演要旨集, 49th


• カゴメ格子磁性体BaCu₃V₂O₈(OH)₂のテラヘルツ光ESR

  CHO EIMIN, OKUBO SUSUMU, TOMOO MIZUKI, SAKURAI TAKAHIRO, OTA HITOSHI, OKAMOTO YOSHIHIKO, YOSHIDA HIROYUKI, HIROI ZENJI

  2010, 日本赤外線学会研究発表会資料, 2010, 48 - 49, Japanese


• カゴメ格子反強磁性体の多周波数ESR測定によるスピンフラストレーションとスピン液体の研究

  OKUBO SUSUMU, ZHANG W, TOMOO MIZUKI, KONDO KENTA, FUJISAWA MASASHI, SAKURAI TAKAHIRO, OTA HITOSHI, FURUKAWA KO, NAKAMURA TOSHIKAZU, KIMATA MOTOI, UJI SHIN'YA, TAKEHANA KANJI, IMANAKA YASUTAKA, TAKAMASU TADASHI, KIKUCHI HIKOMITSU, OKAMOTO YOSHIHIKO, YOSHIDA HIROYUKI, HIROI ZENJI

  10 Nov. 2009, 電子スピンサイエンス学会年会講演要旨集, 48th, 132 - 133, Japanese


• S=1/2カゴメ格子反強磁性体Cu₃V₂O₇(OH)₂・2H₂Oの低周波ESR測定

  KONDO KENTA, TOMOO MIZUKI, ZHANG W, SAKURAI TAKAHIRO, FUJISAWA MASASHI, OKUBO SUSUMU, OTA HITOSHI, FURUKAWA KO, NAKAMURA TOSHIKAZU, KIMATA MOTOI, TAKEHANA KANJI, IMANAKA YASUTAKA, TAKAMASU TADASHI, UJI SHIN'YA, YOSHIDA HIROYUKI, OKAMOTO YOROHIKO, HIROI ZENJI

  10 Nov. 2009, 電子スピンサイエンス学会年会講演要旨集, 48th, 128 - 129, Japanese


• カゴメ格子磁性体BaCu₃V₂O₈(OH)₂のサブミリ波ESR

  ZHANG W, OKUBO SUSUMU, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, OKAMOTO YOSHIHIKO, YOSHIDA HIROYUKI, HIROI ZENJI

  10 Nov. 2009, 電子スピンサイエンス学会年会講演要旨集, 48th, 144 - 145, Japanese


• 28aQJ-8 Development of High-field and High-pressure ESR System

  Sakurai T., Horie T., Okubo S., Ohta H., Tanaka H., Uwatoko Y.

  The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 397 - 397, Japanese


• 25aRE-3 Spin Dynamics of Kagome Lattice Antiferromagnets Observed by High-Field ESR

  Ohta H., Zhang W., Tomoo M., Okubo S., Okamoto Y., Hiroi Z., Kikuchi H.

  The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64(2) (2), 323 - 323, Japanese


• 27pRE-13 High field ESR measurements of magnetically aligned sample of S=3/2 honeycomb lattice antiferromagnet Bi_3Mn_4O_<12>(NO_3)

  Yu Y, Zhang W, Elmasry F, Sakurai T, Fujisawa M, Okubo S, Ohta H, Sumirnova O, Azuma M, Kumada N

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


• 25pQJ-11 High Field ESR Measurements on Spring Crystal of Bond Alternating Chain System Pb_2V_3O_9 II

  Okubo S, Kondo K, Hino S, Fujisawa M, Sakurai T, Ohta H, Wake T, Morimoto Y, Michioka C, Kato M, Yoshimura K, Sugawara N, Kawamata T, Koike Y

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


• 26aQJ-2 Cu/Si-NMR study on S=1/2 low-dimensional antiferromagnet Dioptase

  荻原 健太, 後藤 貴行, 造田 法弥, 藤澤 真士, 大久保 晋, 桜井 敬博, 大道 英二, 太田 仁, 稲垣 祐次, 菊池 彦光, 小野 俊雄, 田中 秀敏, 上床 美也

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


• 26aQJ-8 Terahertz ESR measurements of diamond chain substance Cu_3(OH)_2(MoO_4)_2

  Matsumi N, Hino S, Okubo S, Fujisawa S, Ohta H, Kikuchi H

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


• 26pQJ-9 The study of peculiar magnetic states of Atacamite system pyrochlore substance

  Tomoo Mizuki, Okubo Susumu, Fujisawa Masashi, Sakurai Takahiro, Ohmichi Eiji, Ohta Hitoshi, Hagihara Masato, Kikuchi Hikomitsu, Zheng Xu-Guang

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


• 28aRE-7 ESR measurements of Ising chain system Ca_3Co_<2-x>Mn_xO_6

  Horie T, Kondo K, Sakurai T, Okubo S, Ohta H, Fujisawa M, Choi Y. J, Yi H. T, Cheong S. W

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


• 25aXD-4 Photoluminescence measurement of GaAs:Er,O under high magnetic field

  Katsuno Hiroyasu, Ohta Hitoshi, Portugall Oliver, Ubrig Nicolas, Fujisawa Masashi, Elmasry Fatma, Okubo Susumu, Fujiwara Yasufumi

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


• 25aXD-5 X-band ESR measurement of luminescent center in magnetic semiconductor GaAs:Er,O

  Fujisawa M, Katsuno H, Elmasry Fatma, Asakura A, Okubo S, Ohta H, Fujiwara Y

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


• カゴメ格子磁性体BaCu₃V₂O₈(OH)₂のサブミリ波ESR II

  ZHANG W, OKUBO SUSUMU, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, OKAMOTO YOSHIHIKO, YOSHIDA HIROYUKI, HIROI ZENJI

  18 Aug. 2009, 日本物理学会講演概要集, 64(2) (2), 336, Japanese


• S=1/2カゴメ格子反強磁性体の低周波ESR測定

  KONDO KENTA, TOMOO MIZUKI, ZHANG W, SAKURAI TAKAHIRO, FUJISAWA MASASHI, OKUBO SUSUMU, OTA HITOSHI, YOSHIDA HIROYUKI, OKAMOTO YOSHIHIKO, HIROI ZENJI

  18 Aug. 2009, 日本物理学会講演概要集, 64(2) (2), 398, Japanese


• Evolution of Terahertz ESR in Study of Magnetic Properties

  OHTA H., OKUBO S., OHMICHI E., SAKURAI T.

  日本磁気学会, 01 May 2009, Magnetics Japan, 4(5) (5), 216 - 223, Japanese


• 28aTG-2 High Field ESR Measurements of Low Dimensional Magnet Cu_3Mo_2O_9

  Ohta H., Yoshida T., Okubo S., Fujisawa M., Hamasaki T., Kuroe H., Sekine T., Hase M., Oka K., Ito T., Eisaki H.

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 473 - 473, Japanese


• 28pTF-7 ^<51>V-NMR study of honeycomb lattice antiferromagnet InCu_<2/3>V_<1/3>O_3

  Fujii Y., Takahashi D., Kikuchi H., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), 494 - 494, Japanese


• 27pTG-15 High field ESR measurements of the triangular lattice antiferromagnet InMnO_3 II

  Matsumi N, Okubo S, Fujisawa M, Ohta H, Furukawa M, Nakamura T, Kikuchi H

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), Japanese


• 27pPSB-31 Cu/Si-NMR study on S=1/2 low-dimensional antiferromagnet Dioptase

  萩原 健太, 後藤 貴行, 造田 法弥, 藤澤 真士, 大久保 晋, 櫻井 敬博, 大道 英二, 太田 仁, 稲垣 祐次, 菊池 彦光, 小野 俊雄, 田中 秀数, 上床 美也

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), Japanese


• 28aTG-10 High Field ESR Measurements of Bond Alternating Chain Pb_2V_3O_9 Single Crystal

  Okubo S, Hino S, Fujisawa M, Sakurai T, Ohta H, Sugawara N, Kawamata T, Koike Y

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), Japanese


• 28aPS-114 High Field ESR Measurements of S=1/2 Kagome Lattice Antiferromagnet A_2Cu_3SnF_<12>(A=Rb,Cs)

  Fujisawa M, Matsumi N, Tomoo M, Okubo S, Sakurai T, Ohta H, Morita K, Yano M, Ono T, Tanaka H

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), Japanese


• 30aTG-5 High-field ESR measurements of pyrochlore antiferromagnet Cu_2(OH)_3Cl

  Tomoo Mizuki, Okubo Susumu, Fujisawa Masashi, Sakurai Takahiro, Ohta Hitoshi, Kikuchi Hikomitsu

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), Japanese


• 27pYF-5 Nonmagnetic Impurity Induced Fine Structure on S=1/2 Molecular Spin Ladder Ni(dmit)_2

  Asakura A, Fujisawa M, Okubo S, Ohta H, Nishihara S, Akutagawa T, Nakamura T, Hosokoshi Y

  The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64(1) (1), Japanese


• カゴメ格子磁性体Cu₃V₂O₇(OH)₂・2H₂Oのサブミリ波ESR II

  KONDO KENTA, ZHANG W, OKUBO SUSUMU, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, FURUKAWA MITSUGI, NAKAMURA TOSHIKAZU, YOSHIDA HIROYUKI, HIROI ZENJI

  03 Mar. 2009, 日本物理学会講演概要集, 64(1) (1), 493, Japanese


• カゴメ格子磁性体BaCu₃V₂O₈(OH)₂のサブミリ波ESR

  ZHANG W, OKUBO SUSUMU, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, OKAMOTO YOSHIHIKO, YOSHIDA HIROYUKI, HIROI ZENJI

  03 Mar. 2009, 日本物理学会講演概要集, 64(1) (1), 494, Japanese


• S=1/2低次元反強磁性体DioptaseのCu/Si-NMR

  萩原健太, 後藤貴行, 造田法弥, 藤澤真士, 大久保晋, 櫻井敬博, 大道英二, 太田仁, 稲垣祐次, 菊池彦光, 小野俊雄, 田中秀数, 上床美也

  2009, 日本物理学会講演概要集, 64(1) (1)


• S=1/2低次元反強磁性体DioptaseのCn/Si-NMR II

  萩原健太, 後藤貴行, 造田法弥, 藤澤真士, 大久保晋, 櫻井敬博, 大道英二, 太田仁, 太田仁, 稲垣祐次, 菊池彦光, 小野俊雄, 田中秀数, 上床美也

  2009, 日本物理学会講演概要集, 64(2) (2)


• 圧力下強磁場電子スピン共鳴測定における圧力較正方法

  櫻井敬博, 堀江友樹, 大久保晋, 太田仁, 太田仁, 田中秀数, 上床美也

  2009, 電子スピンサイエンス学会年会講演要旨集, 48th


• 21aQH-11 High field ESR measurements of Cu_3(OH)_2(MoO_4)_2

  Hino S., Okubo S., Ohta H., Kikuchi H.

  The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 378 - 378, Japanese


• 20pQH-7 High field and high pressure ESR measurements of SrCu_2(BO_3)_2

  Sakurai T., Yoshida K., Tomoo M., Okubo S., Ohta H., Kudo K., Koike Y., Uwatoko Y.

  The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 369 - 369, Japanese


• 23aQG-5 Development of high field ESR system the using He free super-conducting magnet

  Kondo K., Okubo S., Ohta H.

  The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 430 - 430, Japanese


• 23aQG-4 Development of Terahertz ESR System Using FIR Laser

  Okubo S., Matsumi N., Hino S., Sakurai T., Ohta H., Kikuchi H., Kindo K.

  The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63(2) (2), 430 - 430, Japanese


• 21aQH-13 ESR Study of Impurity Effect on S=1/2 Antiferromagnetic Spin Ladder Ni(dmit)_2

  Asakura A, Fujisawa M, Okubo S, Ohta H, Nishihara S, Akutagawa T, Nakamura T, Hosokoshi Y

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


• 22pQH-8 Submillimeter wave ESR measurements of kagome lattice antiferromagnets Zn_xCu_<4-X>(OH)_6Cl_2(0≦X≦1)

  Tomoo Mizuki, Okubo Susumu, Sakurai Takahiro, Fujisawa Masashi, Ohta Hitoshi, Kikuchi Hikomitsu

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


• 22pQH-9 High Field ESR Measurements of S=1/2 Kagome Lattice Antiferromagnet Cs_2Cu_3SnF_<12>

  Fujisawa M, Matsumi N, Tomoo M, Okubo S, Sakurai T, Ohta H, Morita K, Yano M, Ono T, Tanaka H

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


• 22pQH-11 High field ESR measurements of the triangular lattice antiferromagnet InMnO_3

  Matsumi N, Okubo S, Fujisawa M, Ohta H, Kikuchi H

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


• カゴメ格子磁性体Cu₃V₂O₇(OH)₂・2H₂Oのサブミリ波ESR

  ZHANG W, OKUBO SHIN, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, YOSHIDA HIROYUKI, HIROI ZENJI

  25 Aug. 2008, 日本物理学会講演概要集, 63(2) (2), 420, Japanese


• 25pWL-7 High field ESR measurements of (4,4'-bpy)Cu_3(OH)_2(MoO_4)_2

  Hino S., Okubo S., Ohta H., Kikuchi H.

  The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 498 - 498, Japanese


• 23aPS-124 Development of high pressure and high field ESR system

  Sakurai T., Yoshida T., Okubo S., Ohta H., Uwatoko Y.

  The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 454 - 454, Japanese


• 23aPS-108 High magnetic field ESR measurements of oxides M_3Fe_4V_6O_24(M=Mn,Mg,Zn)

  Zhang W., Okubo S., Ohta H., Nakamura T., Rudowicz C., Guskos N.

  The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 450 - 450, Japanese


• 23pTF-2 Multi-frequency-ESR measurement of Pd(dmit)_2 salt

  Yoshida T., Sakurai T., Ohmichi E., Okubo S., Ohta H., Kato R., Nakamura T., Furukawa K.

  The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63(1) (1), 802 - 802, Japanese


• 23pWK-10 High-Field ESR measurements of triple chains magnet Cu_3(OH)_4SO_4

  Okubo S, Yamamoto H, Fujisawa M, Sakurai T, Ohta H, Kikuchi H, Nakamura T

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


• 25pWJ-1 ESR study of Er-concentration dependence in photoluminescent material GaAs:Er,O

  Fujisawa M, Asakura A, Okubo S, Ohta H, Fujiwara Y

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


• 25pWL-13 ESR Measurements of S=1/2 Ni(dmit) Spin Ladder System

  Asakura A, Fujisawa M, Okubo S, Ohta H, Nishihara S, Akutagawa T, Nakamura T, Hosokoshi Y

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


• 24pWL-7 Magnetic Properties of S=1/2 Antiferromagnet Cu_6Si_6O_<18>・6H_2O

  Ohta H, Souda N, Fujisawa M, Kameyama T, Zhang W, Tomoo M, Okubo S, Sakurai T, Ohmichi E, Inagaki Y, Kikuchi H, Ono T, Tanaka H, Uwatoko Y

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


• 23pWK-11kagome lattice antiferromagnets Zn_xCu_<4-x>(OH)_6Cl_2(0≦x≦1)

  Tomoo Mizuki, Okubo Susumu, Sakurai Takahiro, Tomita Takahiro, Fujisawa Masashi, Ohta Hitoshi, Kikuchi Hikomitsu

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


• S=1/2反強磁性体Cu₆Si₆O₁₈・6H₂Oの磁性

  太田仁, 太田仁, 造田法弥, 藤澤真士, 亀山俊彦, ZHANG W., 友尾水樹, 大久保晋, 櫻井敬博, 大道英二, 稲垣祐次, 菊池彦光, 小野俊雄, 田中秀数, 上床美也

  2008, 日本物理学会講演概要集, 63(1) (1)


• テラヘルツ光の強磁場電子スピン共鳴への応用と今後の展望

  太田仁, 太田仁, 太田仁, 太田仁, 大久保晋, 大道英二, 櫻井敬博, 藤澤真士

  2008, 日本赤外線学会研究発表会資料, 2008


• 高周波ESRから見たハニカム格子反強磁性体の異常スピンダイナミクス

  太田仁, 和田秀雄, 大久保晋, 冨田崇弘, 藤澤真士, 櫻井敬博, 大道英二, 菊池彦光

  2008, 電子スピンサイエンス学会年会講演要旨集, 47th


• Cu₃V₂O₇(OH)₂・2H₂OのテラヘルツESR

  CHO EIMIN, OKUBO SUSUMU, OTA HITOSHI, FUJISAWA MASASHI, SAKURAI TAKAHIRO, YOSHIDA HIROYUKI, HIROI ZENJI

  2008, 日本赤外線学会研究発表会資料, 2008, 72 - 73, Japanese


• Application of the High Field ESR to the Material Science Research using Millimeter and Terahertz Waves

  OKUBO Susumu, OHTA Hitoshi

  28 Oct. 2007, 日本赤外線学会誌 = Journal of the Japan Society of Infraed Science and Technolog, 16(2) (2), 22 - 29, Japanese


• 22aPS-43 High field ESR measurements of LiMn_2O_4:S spinel

  Hino S., Okubo S., Ohta H., Rudowicz C., Molenda M.

  The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 469 - 469, Japanese


• 21pPSB-44 High Field ESR Measurements of Mn_3Fe_4V_6O_<24> Vanadate

  Zhang W., Okubo S., Ohta H., Nakamura T., Rudowic C., Guskos N.

  The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 442 - 442, Japanese


• 22aRB-2 High field ESR study of EtMe_3P[Pd(dmit)_2]_2

  Yoshida T., Sakurai T., Omichi E., Okubo S., Ohta H., Kato R.

  The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62(2) (2), 863 - 863, Japanese


• 24aWD-12 High field ESR studies of S=1/2 pyrochlore antiferromagnet Cu_2Cl(OH)_3

  Okubo S, Tomoo M, Fujisawa M, Ohmichi E, Ohta H, Kikuchi H

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


• 24aWB-13 High Field ESR Measurements of S=1/2 Antiferromagnet Cu_6Si_6O_<18>・6H_2O III

  Souda N, Fujisawa M, Kameyama T, Zhang W, Tomoo M, Okubo S, Ohta H, Sakurai T, Inagaki Y, Kikuchi H, Ono T, Tanaka H

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


• 24aWB-12 High Field ESR Measurements of S=1/2 Quantum Antiferromagnet Cu(NH_3)_2CO_3

  Fujisawa M, Wada H, Tomoo M, Yamamoto H, Zhang W, Okubo S, Sakurai T, Ohmichi E, Ohta H, Tanaka H

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


• 21pWB-2 High-Field ESR and magnetization measurements of triple chains magnet Cu_3(OH)_4SO_4

  Yamamoto H, Fujisawa M, Sakurai T, Ohta H, Okubo S, Tomita T, Kikuchi H, Nakamura T

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


• 21aWB-10 High Field ESR Measurements of S=1/2 Ni(dmit) Spin Ladder System

  Asakura A, Fujisawa M, Okubo S, Ohta H, Nishihara S, Akutagawa T, Nakamura T, Hosokoshi Y

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


• 21aWB-5 High field ESR measurements of spin gap system Cu_2Cl_4H_8C_4SO_2

  Wada H, Tomoo M, Soda N, Hino S, Fujisawa M, Sakurai T, Okubo S, Ohmichi E, Ohta H, Tanaka H

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


• 22aWD-10 Submillimeter wave ESR measurements of kagome lattice magnets Zn_xCu_<4-x>(OH)_6Cl_2(0≦x≦1)

  Tomoo Mizuki, Okubo Susumu, Sakurai Takahiro, Tomita Takahiro, Fujisawa Masashi, Ohta Hitoshi, Kikuchi Hikomitsu

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


• 18aRB-5 High field ESR study of honeycomb lattice antiferromagnet InCu_<2/3>V_<1/3>O_3 II

  Wada H., Tomita T., Ohta H., Okubo S., Kikuchi H., Uwatoko Y.

  The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 398 - 398, Japanese


• 20pTB-13 Millimeter and Terahertz wave ESR measurements of diamond chain Cu_3(OH)_2(CO_3)_2

  Okubo S., Souda N., Tomoo M., Ohta H., Kikuchi H.

  The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 477 - 477, Japanese


• 21aRB-1 Pressure Dependence of ESR on CsCuCl_3 under High Field.

  Tomita Takahiro, Sakurai Takahiro, Okubo Susumu, Ohta Hitoshi, Uwatoko Yoshiya, Tanaka Hidekazu

  The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62(1) (1), 480 - 480, Japanese


• 21aRB-6 High-Frequency ESR measurements of one- dimensional S=1/2 zig-zag antiferromagnetic chain substance Cu(ampy)Br_2 II

  Yamamoto H, Takano S, Yoshida M, Okubo S, Ohta H, Kikuchi H, Ono T, Tanaka H

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


• 20pTB-8 Sub-millimeter wave ESR measurements of kagome lattice antiferromagnet Zn_xCu_<4-x>(OH)_6Cl_2(0≦x≦1)

  Tomoo Mizuki, Okubo Susumu, Sakurai Takahiro, Tomita Takahiro, Fujisawa Masashi, Ohta Hitoshi, Kikuchi Hikomitsu

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


• 20aRB-8 High Field ESR Measurements of S=1/2 Antiferromagnet Cu_6Si_6O_<18>・6H_2O

  Souda N, Fujisawa M, Kameyama T, Zhang W, Tomoo M, Okubo S, Ohta H, Sakurai T, Inagaki Y, Kikuchi H

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


• 20aRB-4 High Field ESR Measurements of S=1 Spin Dimer System Ba_3Mn_2O_8 II

  Fujisawa M, Souda N, Tomoo M, Okubo S, Sakurai T, Ohta H, Sugiyama R, Tanaka H

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


• 20aRB-3 Angular dependence ESR measurements of spin gap system KCuCl_3 under high magnetic field

  Sakurai T, Taketani A, Fujisawa M, Okubo S, Ohta H, Tanaka H

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


• スピンパイエルス系EtMe₃P[Pd(dmit)₂]₂のサブミリ波ESR測定

  吉田喬久, 櫻井敬博, 大道英二, 大久保晋, 太田仁, 加藤礼三

  2007, 日本赤外線学会研究発表会資料, 2007


• EtMe₃P[Pd(dmit)₂]₂の強磁場ESR測定

  吉田喬久, 櫻井敬博, 大道英二, 大久保晋, 太田仁, 加藤礼三

  2007, 日本物理学会講演概要集, 62(2) (2)


• Analysis of the temperature dependence of the high-frequency EMR spectra of Mn ions in the lithium-ion battery material LiMn2O4

  Czeslaw Rudowicz, Ireneusz Stefaniuk, Roman Dziembaj, Hitoshi Ohta, Marcin Molenda, Susumu Okubo, Makoto Yoshida

  2007, RESEARCH ON CHEMICAL INTERMEDIATES, 33(8-9) (8-9), 853 - 862, English

  Book review


• 23aPS-103 High field ESR measurements of magnetically aligned sample Co_2SiO_4

  Zhang W., Okubo S., Ohta H., Saito T., Takano M.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 338 - 338, Japanese


• 23pXK-8 High-Frequency ESR measurements of one- dimensional S=1/2 zigzag antiferromagnetic chain substance Cu(ampy)Br_2

  Takano S., Yoshida M., Okubo S., Ohta H., Kikuchi H.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 349 - 349, Japanese


• 23pXK-6 [Co_2(OH){1,2,3-(O_2C)_3C_6H_3}(H_2O)]・(H_2O) delta-chain magnet studied by high field ESR

  Tomita T., Zhang W., Okubo S., Ohta H., Sakurai T., Kikuchi H.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 348 - 348, Japanese


• 25aXK-11 High field ESR measurements of KCuCl_3 under precisely determined pressure

  Sakurai T., Tomita T., Okubo S., Ohta H., Tanaka H., Uwatoko Y.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 362 - 362, Japanese


• 25pXH-2 Development of the high sensitive and high frequency ESR system using a microcantilever under a static magnetic field

  Kimata M., Ohta H., Okubo S., Oshima Y., Nojiri H., Ohmichi E., Osada T.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 363 - 363, Japanese


• 25aXH-3 High Field ESR Measurements of Layered Manganese Oxide A_4Mn_3O_<10>(A=Sr,Ba)

  Souda N., Zhang W., Sakurai T., Okubo S., Ohta H., Nishimura K., Sakurai H., Muromachi E., Yoshimura K.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 357 - 357, Japanese


• 25pXH-1 Development of the high-field ESR system using 55T pulsed magnet

  Tomoo M., Okubo S., Ohta H., Kawauchi M., Yamamoto T., Kindo K.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 363 - 363, Japanese


• 24aXK-8 High field ESR study of honeycomb lattice antiferromagnet InCu_<2/3>V_<1/3>O_3

  Wada H., Tomita T., Ohta H., Okubo S., Kikuchi H.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 354 - 354, Japanese


• 23aXK-6 High field ESR study of 1D alternating chain system Pb_2V_3O_9 II

  Yamamoto H., Kodama K., Ohta H., Okubo S., Yoshida M., Waki T., Morimoto Y., Michioka C., Kato M., Yoshimura K.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 312 - 312, Japanese


• 26aXK-11 High field ESR measurements of S=1/2 Kagome antiferromagnet Cu-titmb

  Okubo S., Zhang W., Ohta H., Kaji R., Maegawa S.

  The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61(2) (2), 374 - 374, Japanese


• 23aPS-50 High Field ESR Measurements of S=1/2 Antiferromagnet Cu_6Si_6O_<18>・6H_2O

  Kameyama T, Zhang W, Fujisawa M, Okubo S, Sakurai H, Ohta H, Inagaki Y, Kikuchi H

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


• 25aXK-8 High Field ESR Measurement of S=1 Spin Dimer System Ba_3Mn_2O_8

  Fujisawa M, Souda N, Okubo S, Sakurai T, Ohta H, Sugiyama R, Tanaka H

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


• 27pTE-4 Development and application of high-pressure and high-field ESR system up to 1GPa

  Sakurai T., Taketani A., Okubo S., Ohta H., Uwatoko Y.

  The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 433 - 433, Japanese


• 30aSC-2 Submillimeter wave ESR measurements of "Cu-titmb"

  Zhang W., Okubo S., Ohta H., Kaji R., Maegawa S.

  The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 495 - 495, Japanese


• 30pSC-6 High Field ESR Measurements on the lithium manganese spinel LiMn_2O_4 II

  Takano S., Kaji T., Okubo S., Yoshida M., Ohta H., Inagaki Y., Kimura S., Asano T., Kunimoto T., Dziembaj R., Molenda M., Rudowicz C.

  The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61(1) (1), 502 - 502, Japanese


• 27aSB-7 High Field ESR Measurements of 1D antiferromagnet Cu_2Cl_4・H_8C_4SO_2 II

  Okubo S, Shiraki K, Ohta H, Yoshida M, Fujisawa M, Tanaka H, Sakai T

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


• 圧力下強磁場ESRによるKCuCl₃の精密な圧力依存性の測定

  櫻井敬博, 竹谷明朗, 冨田崇弘, 大久保晋, 太田仁, 田中秀数, 上床美也

  2006, 電子スピンサイエンス学会年会講演要旨集, 45th


• 27pSB-9 High field ESR measurement of 1D quantum spin system Pb_2V_3O_9

  Ohta H, Yoshimura K, Kodama M, Yoshida M, Okubo S, Waki T, Ito Y, Morimoto Y, Michioka C, Kato M

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


• 19pXH-7 High field ESR measurements of NH_4CuCl_3 under pressure

  Taketani A., Sakurai T., Oku M., Okubo S., Ohta H., Tanaka H., Uwatoko Y.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 286 - 286, Japanese


• 22aYB-5 Submillimeter wave ESR measurements of Co_2SiO_4

  Okubo S., Chow Z., Ohta H., Saito T., Takano M.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 342 - 342, Japanese


• 21pPSB-26 Submillimeter wave ESR measurements of SrCo_6O_<11>

  Zhang W., Okubo S., Ohta H., Satio T., Takeda Y., Ishiwata S., Shimakawa Y., Takano M.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 334 - 334, Japanese


• 21aYB-9 Development of high-field and high pressure ESR system and its application

  Sakurai T., Taketani A., Shiraki K., Kodama M., Yoshida M., Okubo S., Ohta H., Tanaka H., Uwatoko Y.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 309 - 309, Japanese


• 20pYB-9 High field ESR measurement of the organic magnet F_5PNN

  Kodama Masafumi, Sakurai Takahiro, Okubo Susumu, Ohta Hitosih, Hosokoshi Yuko

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 303 - 303, Japanese


• 20pYB-5 High field ESR study of a quantum spin system (CH_3)_2NH_2CuCl_3 IV

  Yoshida M., Kitano Y., Inagaki Y., Sakurai T., Kimata M., Okubo S., Ohta H., Koyama K., Motokawa M., Asano T., Ajiro Y.

  The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60(2) (2), 302 - 302, Japanese


• 19aXH-11 High Field ESR Measurements of 1D substance Cu_2Cl_4・H_8C_4SO_2

  Shiraki K, Yoshida M, Okubo S, Ohta H, Fujisawa M, Tanaka H

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


• 24pYP-4 High field ESR measurement of the organic magnets F_2PNNNO and F_5PNN

  Kodama Masafumi, Sakurai Takahiro, Okubo Susumu, Ohta Hitoshi, Hosokoshi Yuko

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 419 - 419, Japanese


• 24pXN-5 High Field ESR Measurements of Spinel Compound LiMn_2O_4

  Okubo S., Kaji T., Kimura S., Yoshida M., Ohta H., Inagaki Y., Asano T., Kunimoto T., Rudowiczc C., Molenda M., Dziembaj R.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 416 - 416, Japanese


• 24aYP-14 Magnetic Study of the Quantum Spin Chain System(CH_3)_2NH_2Cu(Cl_xBr_<1-x>)_3

  Kitano Y., Inagaki Y., Yoshida M., Sakurai T., Okubo S., Ohta H., Asano T., Ajiro Y., Kimata M., Koyama K., Motokawa M., Matsuo A., Kindo K., Hagiwara M.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 413 - 413, Japanese


• 25aYP-2 Development of the ultra high sensitive pulsed magnetic field and high frequency ESR using a microcantilever

  Ohta H., Kimata M., Okubo S., Ohmichi E., Osada T.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 456 - 456, Japanese


• 25aYP-3 Development of pressure cell for pulsed high field ESR measurment

  Taketani A., Sakurai T., Kodama M., Okubo S., Ohta H., Uwatoko Y., Tanaka H.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 456 - 456, Japanese


• 24aYP-4 High field ESR measurements of a finite Haldane chain in Y_2BaNi_<1-x>Mg_xO_5

  Yoshida M., Shiraki K., Okubo S., Ohta H., Ito T., Takagi H., Kaburagi M., Ajiro Y.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 410 - 410, Japanese


• 24aYP-8 High Field ESR measurements of 1D zigzag chain substances MCuP_2O_7(M=Sr,Pb) III

  Shiraki K., Yoshida M., Okubo S., Ohta H., Sakamoto M., Miyashita S., Belik Alexei A., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60(1) (1), 411 - 411, Japanese


• マイクロカンチレバーを用いたパルス強磁場中高感度ESR測定法の開発

  木俣基, 太田仁, 大久保晋, 大道英二, 長田俊人

  2005, 電子スピンサイエンス学会年会講演要旨集, 44th


• ACuCl₃(A=K,NH₄)の高圧下強磁場ESR

  櫻井敬博, 竹谷明朗, 白木高輔, 児玉政文, 吉田誠, 大久保晋, 太田仁, 田中秀数, 上床美也

  2005, 電子スピンサイエンス学会年会講演要旨集, 44th


• 12aPS-113 High Field ESR Measurements of Spin Gap System MCu_2(PO_4)_2 II

  Kaji T, Okubo S, Ohta H, Belik A A, Azuma M, Takano M, Inagaki Y

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 366 - 366, Japanese


• 12pWG-3 Energy level structure of CuHpCl in high field

  Inagaki Y., Yoshida M., Kitano Y., Kimata M., Sakurai T, Okubo S., Ohta H., Setsune J., Kikuchi H., Boucher J. P.

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 376 - 376, Japanese


• 12aPS-119 High field ESR measurements of spinel oxsides ZnCr_2O_4

  Taketani A, Hirano T, Ohta H, Okubo S., Inagaki Y, Kikuchi H., Kagomiya I., Toki M, Kohn K

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 368 - 368, Japanese


• 12pWG-4 High field ESR measurements of ABX_3 compounds under pressure

  Sakurai T, Takatani A, Kodama M, Okubo S, Ohta H, Tanaka H, Uwatoko Y

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 376 - 376, Japanese


• 12pWG-5 High field ESR measurements of linear trimer system M_3Cu_3(PO_4)_4

  Ishikawa H, Inagaki Y, Okubo S, Ohta H, Belik Alexei A, Azuma M, Takano M

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 376 - 376, Japanese


• 13pWG-10 High Field ESR measurements of 1D zig-zag chain substances MCuP_2O_7 (M=Sr, Pb) II

  Shiraki K, Yoshida M, Ohta H, Okubo S, Belik Alexei, Azuma M, Takano M

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 395 - 395, Japanese


• 13pWG-11 High Field LSR Study of the Bond-alternating Quantum Spin Chain System (CH_3)_2NH_2CuCl_3 III

  Kitano Yumiko, Inagaki Yuji, Okubo Susumu, Ohta Hitoshi, Asano Takayuki, Ajiro Yoshitami

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 395 - 395, Japanese


• 13pWG-4 HIGH FIELD ESR MEASUREMENTS OF DIAMOND CHAIN SUBSTANCE Cu_3(OH)_2(CO_3)_2 III

  OKUBO S, KAJI T, TAKETANI A, KODAMA M, OHTA H, INAGAKI Y, KIKUCHI H

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 394 - 394, Japanese


• 13aWG-12 High field ESR measurements of the organic magnet F_2PNNNO

  Ohta H, Sakurai T, Kodama M, Kimata M, Okubo S, Yoshida M, Hosokoshi Y

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 389 - 389, Japanese


• 13aWG-6 High field ESR study of 1D alternating chain system Pb_2V_3O_9

  Kodama M, Yoshida M, Okubo S., Ohta H., Waki T., Morimoto Y., Michioka C., Kato M., Yoshimura K.

  The Physical Society of Japan (JPS), 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59(2) (2), 387 - 387, Japanese


• 28aXL-7 Magnetic excitation of one-dimensional quantum antiferromagnetic chain substance BaCu_2(Si_<1-x>Ge_x)_2O_7(x=0.65) at very low temperature II

  Ohta H, Fukuoka D, Okubo S, Inagaki Y, Kunimoto T, Kimata M, Koyama K, Motokawa M, Hiroi Z

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 483 - 483, Japanese


• 29pXR-6 High field ESR measurements of linear trimer system M_3Cu_3(PO_4)_4

  Ishikawa H, Inagaki Y., Okubo S., Ohta H, Belik Alexei A., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 499 - 499, Japanese


• 27pXL-5 High Field ESR Study of the Bond-alternating Quantum Spin Chain System (CH_3)_2NH_2CuC1_3 II

  Kitano Yumiko, Inagaki Yuji, Okubo Susumu, Ohta Hitoshi, Asano Takayuki, Ajiro Yoshitami

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 467 - 467, Japanese


• 27pXL-4 HIGH FIELD ESR MEASUREMENTS OF DIAMOND CHAIN SUBSTANCE CU_3(OH)_2(CO_3)_2 II

  OKUBO S., KAMIKAWA T., INAGAKI Y, OHTA H., KOYAMA K., MOTOKAWA M., NOJIRI H., KIKUCHI H.

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 466 - 466, Japanese


• 27pXL-2 High field ESR measurements of ID zig-zag chain substances MCuP_2O_7(M=Sr,Pb)

  Yoshida M, Inagaki Y, Okubo S, Shiraki K, Ohta H, Belik Alexei, Azuma M, Takano M

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 466 - 466, Japanese


• 28aXL-11 Mangettzation and ESR of Delta-Chain Model Substance with Ferromagnetic Interaction

  Inagaki Y., Kunimoto T., Kamikawa T., Okubo S., Ohta H., Kikuchi H., Saito T., Azuma M, Takano M., Nojiri H., Koyama K., Motokawa M., Narumi Y., Kindo K., Kaburagi M., Tonegawa T.

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 484 - 484, Japanese


• 27aPS-91 High Field ESR Measurements of Spin Gap System MCu_2(PO_4)_2

  Kaji T, Inagaki Y, Okubo S., Ohta H, Belik A A., Azuma M, Takano M

  The Physical Society of Japan (JPS), 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59(1) (1), 456 - 456, Japanese


• 圧力下におけるスピンギャップ系の強磁場ESR測定

  竹谷明朗, 桜井敬博, 児玉政文, 大久保晋, 太田仁, 田中秀数, 上床美也

  2004, 電子スピンサイエンス学会年会講演要旨集, 43rd


• 強磁場ESRによるスピンギャップ系の研究

  太田仁, 桜井敬博, 児玉政文, 竹谷明朗, 大久保晋, 吉田誠, 細越裕子, 田中秀数, 上床美也

  2004, 電子スピンサイエンス学会年会講演要旨集, 43rd


• High field ESR measurements of 1D zig-zag chains of SrCuP_2O_7

  Yoshida M., Inagaki Y., Okubo S., Shiraki K., Ohta H., Belik Alexei, Azuma M., Takano M.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 371 - 371, Japanese


• High Field ESR Measurements of Quantum Spin System Cu_2(OH)_2CO_3

  Kaji T., Kamikawa T., Inagaki Y., Okubo S., Ohta H., Kikuchi H., Funahashi R., Kitamura N.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 368 - 368, Japanese


• High field ESR study in the magnetic ordered phase of frustrated magnetic chain system KCu_5V_3O_<13>

  Inagaki Y., Fukuoka D., Sakurai T., Okubo S., Ohta H., Sakurai H., Yoshimura K., Kosuge K.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 371 - 371, Japanese


• High field ESR measurements of spinel oxsides MCr_2O_4(M=Mg, Zn)

  Hirano T., Ohta H., Okubo S., Inagaki Y., Kikuchi H., Kagomiya I., Toki M., Kohn K.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 407 - 407, Japanese


• High field ESR measurements of TlCuCl_3 under pressure

  Sakurai T., Inagaki Y., Okubo S., Ohta H., Tanaka H., Uwatoko Y.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 422 - 422, Japanese


• Submillimeter wave ESR measurements of linear trimer system M_3Cu_3(PO_4)_4

  Ishikawa H., Inagaki Y., Okubo S., Ohta H., Belik Alexei A., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 423 - 423, Japanese


• High Field ESR Study of the Bond alternating Quantum Spin Chain System (CH_3)_2NH_2CuCl_3

  Kitano Yumiko, Sakurai Takahiro, Inagaki Yuji, Okubo Susumu, Ohta Hitoshi, Asano Takayuki, Ajiro Yoshitami

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 376 - 376, Japanese


• Magnetic excitation of one-dimensional quantum antiferromagnetic chain substance BaCu_2(Si_<1-x>Ge_x)_2O_7 (x=0.65) at very low temperature

  Fukuoka D., Ohta H., Okubo S., Inagaki Y., Kunimoto T., Kimata M., Koyama K., Motokawa M., Hiroi Z.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 354 - 354, Japanese


• High field ESR measurements of diamond chain substance Cu_3(OH)_2(CO_3)_2

  Okubo S., Kamikawa T., Inagaki Y., Ohta H., Koyama K., Motokawa M., Nojiri H., Kikuchi H.

  The Physical Society of Japan (JPS), 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58(2) (2), 355 - 355, Japanese


• High field ESR measurements of ID alternating spin chain system (VO)_2P_2O_7

  Okubo S., Nagasaka Y., Inagaki Y., Kunimoto T., Ohta H., Saito T., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 466 - 466, Japanese


• Submillimeter wave ESR measurements of MEM (TCNQ)_2 under pressure

  Sakurai T., Saruhashi M., Inagaki Y., Okubo S., Ohta H., Takagi S., Uwatoko Y.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 472 - 472, Japanese


• High field ESR measurements of Bi_4Cu_3V_2O_<14> II

  Hirano T., Ohta H., Okubo S., Inagaki Y., Kunimoto T., Sakurai H., Yoshimura K., Kosuge K.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 459 - 459, Japanese


• The observation of the direct transition in diamond chain substance Cu_3(OH)_2(CO_3)_2 by high field ESR measurements

  Ohta H., Kamikawa T., Okubo S., Kunimoto T., Inagaki Y., Kikuchi H., Saito T., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 458 - 458, Japanese


• High field ESR measurements of one-dimensional quantum antiferromagnetic chain substances BaCu_2(Si_<1-x>Ge_x)_2O_7

  Fukuoka D., Ohta H., Okubo S., Inagaki Y., Kunimoto T., Hiroi Z.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 459 - 459, Japanese


• High Field ESR Measurements of Quantum Spin System under High Pressure II

  Saruhashi M., Sakurai T., Okubo S., Inagaki Y., Ohta H., Uwatoko Y., Ono T., Tanaka H.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 392 - 392, Japanese


• Field induced magnetic order in singlet ground state system CsFeBr_3 studied by high-field ESR II

  Inagaki Y., Hiraka K., Okubo S., Ohta H., Tanaka H.

  The Physical Society of Japan (JPS), 06 Mar. 2003, Meeting abstracts of the Physical Society of Japan, 58(1) (1), 392 - 392, Japanese


• Field Induced Magnetic Ordering in CsFeBr3 Studied by High Field ESR (Application of Submillimeter Wave Electron Spin Resonance for Novel Magnetic Systems)

  Inagaki Yuji, Okubo Susumu, Ohta Hitoshi

  Physical Society of Japan, 2003, Journal of the Physical Society of Japan, 72, 127 - 134, English


• NMR Study on the Quantum Spin Ladder NH_4_CuCl_3_

  H. Tanaka, T. Ono, S. Maruyama, S. Teraoka, K. Nagata, H. Ohta, S. Okubo, S. Kimura, T. Kambe, H. Nojiri, M. Motokawa

  2003, Physica B, 329-333, 977 - 978


• Millimeter and Submillimeter Wave ESR Study of [Cu(bpy)H_2O][Cu(bpy)(mal)H_2O](CIO_4)_2 III

  Kunimoto T., Kamikawa T., Inagaki Y., Okubo S., Ohta H., Kikuchi H., Saito T., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 346 - 346, Japanese


• Millimeter and submillimeter wave ESR measurements of diamond chain substance azurite III

  Kamikawa T., Okubo S., Ohta H., Kunimoto T., Inagaki Y., Kikuchi H., Saito T., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 346 - 346, Japanese


• High Field ESR Measurements of Quantum Spin Systems under High Pressure

  Saruhashi M., Sakurai T., Ohta H, Okubo S, Inagaki Y, Uwatoko Y., Ono T., Tanaka H.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 348 - 348, Japanese


• Field induced magnetic order in singlet ground state system CsFeBr_3 studied by high-field ESR.

  Inagaki Y, Hiraka K, Koyama R, Okubo S, Ohta H, Tanaka H.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 347 - 347, Japanese


• High Magnetic Field ESR Measurements of Spin Frustration System

  Okubo S., Hirano T., Inagaki Y., Ohta H.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 396 - 396, Japanese


• Submilimeter wave ESR measurements of KCu_5V_3O_13

  Fukuoka D., Sakurai T., Ohta H., Okubo S., Inagaki Y., Sakurai H., Yoshimura K., Kosuge K.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 393 - 393, Japanese


• Submillimeter wave ESR measurements of (DI-DCNQI)2Ag under pressure

  Sakurai T., Saruhashi M., Inagaki Y., Okubo S., Ohta H., Hiraki K., Uwatoko Y.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 706 - 706, Japanese


• ESR measurements of Bi_4Cu_3V_2O_14

  Hirano T., Ohta H., Okubo S., Inagaki Y., Kunimoto T., Sakurai H., Yoshimura K., Kosuge K.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 381 - 381, Japanese


• High field ESR measurements of S=1 spin gap system Ba_3Mn_2O_8

  Nagasaka Y., Inagaki Y., Okubo S., Ohta H., Kunimoto T., Uchida M., Tanaka H.

  The Physical Society of Japan (JPS), 13 Aug. 2002, Meeting abstracts of the Physical Society of Japan, 57(2) (2), 325 - 325, Japanese


• 25aXJ-9 ESR study on the frustrated antiferromagnet ZnCr_2O_4, single crystal

  Kikuchi H., Ohta H., Okubo S., Kagomiya I., Toki M., Kohn K., Shiratori K

  The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 388 - 388, Japanese


• 26pXJ-8 一次元量子スピン鎖化合物BaCu_2(Si_<1-x>GE_x)_2O_7x=0.65の強磁場ESR(26pXJ 量子スピン1次元鎖,領域3(磁性,磁気共鳴分野))

  太田 仁, 川上 幹児, 大久保 晋, 國本 崇, 稲垣 祐次, 広井 善二, 山田 高広, 高野 幹夫

  一般社団法人日本物理学会, 01 Mar. 2002, 日本物理学会講演概要集, 57(1) (1), 446 - 446, Japanese


• 26pXJ-3 Millimeter and Submillimeter Wave ESR Study of [Cu(bpy)H_2O][Cu(bpy)(mal)H_2O](ClO_4)_2 II

  Kunimoto T., Kamikawa T., OKUBO Y., Ota S., Inagaki, Kikuchi H.

  The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 445 - 445, Japanese


• 26pXJ-7 High Field ESR Measurements of Quantum Spin Systems under High Pressure

  Saruhashi M., Sakurai T., Ohta H., Okubo S., Inagaki Y., Uwatoko Y., Kikuchi H., Takagi Y.

  The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 446 - 446, Japanese


• 27aXJ-9 High field ESR measurements of spin ladder system Sr(Cu_<1-x>Zn_x)_2O_3

  Nagasaka Y., Inagaki Y., Okubo S., Ohta H., Saito T., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 453 - 453, Japanese


• 26pXJ-1 Millimeter and submillimeter wave ESR measurements of diamond chain substance azurite 2

  Kamikawa T., Okubo S., Ohta H., Kunimoto T., Inagaki Y., Kikuchi H.

  The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 445 - 445, Japanese


• 25aXM-5 1Submillimeter wave ESR measurements of Pd(dmit)_2 salts IV

  Sakurai T., Okubo S., Ohta H., Kato R., Nakamura T.

  The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 775 - 775, Japanese


• 27aXM-3 High field ESR measurements of π-d electoron system (DMET)_2FeBr_4 III

  Kirita K., Inagaki Y., Okubo S., Ohta H., Enomoto K., Miyazaki A., Enoki T.

  The Physical Society of Japan (JPS), 01 Mar. 2002, Meeting abstracts of the Physical Society of Japan, 57(1) (1), 800 - 800, Japanese


• Submillimeter wave ESR measurements of Pd(dmit)_2 salts III

  Sakurai T., Ohta H., Okubo S., Kato R., Nakamura T.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 697 - 697, Japanese


• The electronic states of GaAs:Dy analyzed by ESR

  Yoshikawa J., Okubo S., Ohta H., Isogai Y., Koide T., Jinno S., Fujiwara Y., Takeda Y.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 780 - 780, Japanese


• X-band ESR Measurement of Heavily Doped Si:Fe

  Koyama R., Yoshikawa J., Kunimoto T., Okubo S., Ohta S., Nakayama H.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 533 - 533, Japanese


• High field ESR mesurements of π-d electron system (DMET)_2FeBr_4 II

  Kirita K., Okubo S., Ohta H., Enomoto K., Enoki T., Miyazaki A.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 711 - 711, Japanese


• ESR measurements of S=1/2 1D Heisnberg alternating bond chain compound (VO)_2P_2O_7 (AP phase)

  Nagasaka Y., Kunimoto T., Okubo S., Ohta H., Yamauchi T., Ueda Y.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 353 - 353, Japanese


• Observation of Field Induced Magnetic Ordering CsFeBr_3 by High Field ESR

  Okubo S., Koyama R., Ohta H., Tanaka H.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 322 - 322, Japanese


• Pressure Calibration of High Field ESR under High Pressure

  Saruhashi M., Sakurai T., Ohta H., Okubo S., Kunimoto T., Uwatoko Y.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 363 - 363, Japanese


• Millimeter wave ESR mesurements of diamond chain subsatance azurite

  Kamikawa T., Okubo S., Ohta H., Kunimoto T., Kikuchi H.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 368 - 368, Japanese


• Sllimeter and Submillimcter Wave ESR Study of [Cu(bpy)H,O][Cu(bpy)(mal)H_2O](ClO_4)_2

  Kunimoto T., Kamikawa T., Okubo S., Ohta H., Kikuchi H.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 368 - 368, Japanese


• High field ESR of 1D quantum spin system BaCu_2Si_2O_7

  Kawakami K., Okubo S., Ohta H., Kunimoto T., Hiroi Z., Yamada T., Takano M.

  The Physical Society of Japan (JPS), 03 Sep. 2001, Meeting abstracts of the Physical Society of Japan, 56(2) (2), 367 - 367, Japanese


• Subbmillimeter wave ESR measurements of spin ladder system Sr(Cu_<1-x>Zn_x)_2O_3 III

  Hazuki K., Ohta H., Okubo S., Sakurai T., Yoshida H., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 09 Mar. 2001, Meeting abstracts of the Physical Society of Japan, 56(1) (1), 412 - 412, Japanese


• ESR measurements of spin-ladder system BIP-TENO

  Ohta H., Kirita K., Okubo S., Hosokoshi Y., Katoh K., Inoue K.

  The Physical Society of Japan (JPS), 09 Mar. 2001, Meeting abstracts of the Physical Society of Japan, 56(1) (1), 414 - 414, Japanese


• 28aXB-3 一次元量子スピン鎖化合物BaCU_2(Si_<1-x>Ge_x)_2O_7の強磁場ESR

  川上 幹児, 大久保 晋, 太田 仁, 山田 高広, 高野 幹夫, 広井 善二

  一般社団法人日本物理学会, 09 Mar. 2001, 日本物理学会講演概要集, 56(1) (1), 403 - 403, Japanese


• The electronic states of Ga As: Er codoped with oxygen analyzed by ESR III

  Yoshikawa J., Urakawa C., Okubo S., Ohta H., Koide T., Kawamoto T., Fujiwara Y., Takeda Y.

  The Physical Society of Japan (JPS), 09 Mar. 2001, Meeting abstracts of the Physical Society of Japan, 56(1) (1), 608 - 608, Japanese


• Submillimeter wave ESR measurements of Pd(dmit)_2 salts II

  Sakurai T., Ohta H., Okubo S., Kato R., Nakamura T.

  The Physical Society of Japan (JPS), 09 Mar. 2001, Meeting abstracts of the Physical Society of Japan, 56(1) (1), 779 - 779, Japanese


• High field ESR measurements of π-d electoron system (DMET)_2FeBr_4

  Kirita K., Okubo S., Ohta H., Enomoto K., Enoki T., Miyazaki A.

  The Physical Society of Japan (JPS), 09 Mar. 2001, Meeting abstracts of the Physical Society of Japan, 56(1) (1), 754 - 754, Japanese


• High-Field ESR measurements of a bond alternating Heisenberg chain system Ni₂(μ-N₃)₃(dpt)₂(ClO₄)

  H.Ohta, S.Okubo, S.Kimura, S.Takeda, H.Kikuchi, H.Nagawasa

  2001, Physica B, 294-295, 55-59


• Millimeter-wave ESR (electron spin resonance) measurements of frustrated ZnCr_2xGa_2-2xO₄

  H.Ohta, S.Okubo, H.Kikuchi, S.Ono

  2001, Can. J. Phys., 79, 1387-1391


• High field ESR system and ITS application to the study of quantum spin systems

  H.Ohta, S.Okubo, S.Kimura, T.Tanaka, H.Kikuchi, H.Nagawasa

  2001, International journal of Infrared and Millimeter Waves 22 387-391


• High-field magnetooptical measurements of BEDT-TTF salts

  OSHIMA Y, OHTA H, OKUBO S, KOYAMA K, MOTOKAWA M, TAMURA M, NISHIO Y, KAJITA K

  2001, Physica B, 294/295, 431 - 434


• High Field ESR Measurements of Me4As[Pd(dmit)2]2

  OHTA H, SAKURAI T, OKUBO S, KATO R, NAKAMURA T

  2001, Synth. Met., 120(1/3) (1/3), 891 - 892


• Cyclotron resonance measurements of BEDT-TTF salts

  Oshima Y., Ohta H., OKubo S., Koyama K., Motokawa M., Tamura M., Nishio Y., Kajita K., Kanoda K.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 709 - 709, Japanese


• Submillimeter wave ESR measurements of Pd(dmit)_2 salts

  Sakurai T., Ohta H., Okubo S., Koto R., Nakamura T., Uwatoko Y.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 735 - 735, Japanese


• ESR study of S=1/2 Zigzag antiferromagnetic chain substance Cu(ampy)Br_2

  Ueda K., Ohta H., Okubo S., Kikuchi H.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 376 - 376, Japanese


• High field ESR of Ca_2Y_2Cu_5O_<10> with edge-sharing CuO_2 chains

  Kawakami K., Okubo S., Ohta H., Hiroi Z.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 376 - 376, Japanese


• Submillimeter wave ESR of S=1 Bond Alternated Antiferromagnetic Chain System VII

  Takeda S., Ohta H., Okubo S., Kikuchi H.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 376 - 376, Japanese


• ESR Study of YTiO_3 single crystal

  Okubo S., Ohta H., Nojiri H., Motokawa M., Akimitsu J.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 391 - 391, Japanese


• High Field ESR Mesurements of Cu_2(dach)_2Cl_4 and Its Temperature Dependence

  Kirita K., Okubo S., Ohta H., Sakurai T., Yoshikawa J., Kikuchi H.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 420 - 420, Japanese


• Submillimeter wave ESR measurements of spin ladder system Sr(Cu_<1-x>Zn_x)_2O_3 III

  Hazuki K., Ohta H., Okubo S., Sakurai T., Yoshida H., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 420 - 420, Japanese


• Development of the high-field ESR system under high pressure

  Ohta H., Sakurai T., Okubo S., Uwatoko Y.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 361 - 361, Japanese


• Submillimeter Wave ESR Measurement of the Spin Gap System TlCuCl_3

  Okubo S., Ohta H., Okubo S., Osawa A., Tanaka H.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 372 - 372, Japanese


• Submillimeter wave ESR of 1D altermating chain compound of high-pressure phase (VO)_2P_2O_7 II

  Goto T., Okubo S., Ohta H., Sakurai T., Saito T., Azuma M., Takano T.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 391 - 391, Japanese


• Submillimetre wava ESR measurements of 1-dimensional quantum spin system Sr_3Znlr_xPt_<1-x>O_6

  Miura Y., Ohta H., Okubo S.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 393 - 393, Japanese


• Submillimeter Wave ESR Measuremnt of S=1 Bond Alternating Antiferromagnetic Chain System VI

  Takeda S., Ohta H., Okubo S., Kimura S., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 354 - 354, Japanese


• Submillimeter wave ESR measurements of spin ladder system Sr(Cu_<1-x>Zn_x)_2O_3

  Hazuki K., Ohta H., Okubo S., Oshima Y., Saito T., Azuma M., Takano M.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 423 - 423, Japanese


• Submillimeter wave ESR of(Ca_<1-y>Sr_y)_<1-x>CuO_2 with edge-sharing CuO_2 chains

  Ohta H., Ueda A., Okubo S., Hiroi Z., Okumura M., Takano M.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 423 - 423, Japanese


• Cyclotron resonance measurements of θ-(BEDT-TTF)_2I_3 III

  Oshima Y., Ohta H., Koyama K., Motokawa M., OKubo S., Tamura M., Nishio Y., Kajita K.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 724 - 724, Japanese


• Submillimeter Wave ESR Measurements of Me_4As[Pd(dmit)_2]_2

  Sakurai T., Ohta H., Okubo S., Koto R., Nakamura T.

  The Physical Society of Japan (JPS), 10 Mar. 2000, Meeting abstracts of the Physical Society of Japan, 55(1) (1), 736 - 736, Japanese


• 3次元フラストレーション系の強磁場ESR(京大基礎研短期研究計画「フラストレーションとカイラル秩序」,研究会報告)

  大久保 晋, 太田 仁, 菊地 彦光, 広井 善二

  物性研究刊行会, 2000, 物性研究, 75(1) (1), 122 - 125, Japanese


• BEDT-TTF系のサイクロトロン共鳴の観測

  太田 仁, 大島 勇吾, 大久保 晋

  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, 2000, 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, 2000, 165 - 168, Japanese


• Fermi surface study of theta-(BEDT-TTF)2I3 by cyclotron resonance measurements

  OSHIMA Y, OHTA H, OKUBO S, KOYAMA K, MOTOKAWA M, TAMURA M, NISHIO Y, KAJITA K

  2000, Synth. Met., 120(1/3) (1/3), 853 - 854


• 24aYQ-8 Submillimeter Wave ESR of Ca<1-x>CuO_2 With Edge-Sharing CuO_2 ChainsII

  Ueada A, Ohta H, Okubo S, Hiroi Z, Okumura M, Takano M

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 337 - 337, Japanese


• 24pS-4 Submillimeter wave ESR measurement of Cu_3V_2O_7(OH)_22H_2O

  Hazuki K, Ohta H, Okubo S, Sakurai T, Kobayashi N, Hiroi Z

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 342 - 342, Japanese


• 24aYQ-12 Submillimeter wave ESR measurements of s=1/2 Triangular cluster sublattice La_4Cu_3MoO_<12gt:

  Miura Y, Ohta H, Okubo S, Sakurai T, Azuma M, Takano M

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 338 - 338, Japanese


• 24aYQ-10 Submillimeter wave ESR of 1D altermationg chain compund of high-pressure from (VO)_2P_2O_7

  Goto T, Okubo S, Ohta H, Sakurai T, Saito T, Azuma M, Takano M

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 338 - 338, Japanese


• 26aS-7 The Observation of direct transition in Cu_2(dash)_2Cl_4 by high field ESR

  Ohta H, Oshima Y, Tanaka T, Okubo S, Sakurai T, Koyama K, Motokawa M, Kikuchi H, Nagasawa H

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 394 - 394, Japanese


• 26aS-9 Submillimeter Wave ESR Measurement of the Spin Gap System TlCuCl_3

  Arioka T, Ohta H, Okubo S, Osawa A, Tanaka H

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 395 - 395, Japanese


• 25pYQ-8 Submillimeter wave ESR of gapless S=1 Bond Alternated antiferromagnetic Chain System

  Takeda S, Ohta H, Okubo S, Kimura S, Kikuchi H, Nagasawa H

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 388 - 388, Japanese


• 26aE-12 ESR Measurement of (Dme-DCNQI)_2Li

  Sakurai T, Ohta H, Okubo S, Kanoda K, Hiraki K

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 756 - 756, Japanese


• 25aE-4 Cyclotorn resonance measurements of θ-(BEDT-TTF)_2I_3 II

  Oshima Y, Ohta H, Koyama Y, Motokawa M, Okubo S, Tamura M, Nishi Y, Kajita K

  The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54(2) (2), 740 - 740, Japanese


• 29a-F-8 Submillimeter wave ESR of Ca_<1-x>CuO_2with edge-sharing CuO_2chains

  Ohta H., Ueda A., Okubo S., Hiroi H., Okunura M., Takano M.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 418 - 418, Japanese


• 28a-E-11 High Field ESR measurements of Cu_2(dach)_2Cl_4 III

  Tanaka T., Okubo S., Ohta H., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 374 - 374, Japanese


• 31a-J-3 Submillimeter wave ESR measurement of Nd_2BaNiO_5 single crystal

  Okubo S., Ohta H., Tanaka T., Yokoo T., Akimitsu J., Nojiri H., Motokawa M.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 491 - 491, Japanese


• 28p-E-2 High Field ESR of CsCuCl_3 III

  Yamada T., Okubo S., Ohota H., Nojiri H., Motokawa M., Tanaka H.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 404 - 404, Japanese


• 29p-PSB-10 Millimeter wave ESR of Mn_5Si_3 using the strip line technique II

  Arioka T., Okubo S., Ohta H., Kulatov E.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 454 - 454, Japanese


• 28a-H-10 High field ESR measurements of frustration system ZnCr_<2-X>Ga_XO_4

  Ono S., Ohta H., Okubo S., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 498 - 498, Japanese


• 28a-H-11 Submillimeter wave ESR of aligned powder sample of Tb_2Cu_2O_5

  Goto T., Tanaka T., Okubo S., Ohta H., Mogi I., Watanabe K., Motokawa M.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 498 - 498, Japanese


• 28a-H-9 Submillimeter wave ESR measurement of S=1 bond alternating chain V

  Kimura S., Okubo S., Ohta H., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 498 - 498, Japanese


• 29p-ZE-1 High field ESR measurement of heavily doped Si:Mn IV

  Nakashima Y., Ohta H., Urakawa C., Okubo S., Nakayama H., Nishino T.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 151 - 151, Japanese


• 30p-XB-7 Millimeter Wave ESR Measurement of (DI-DCNQI)_2Ag III

  Nakagawa N., Ohta H., Okubo S., Kanoda K., Hiraki K., Kitamura N.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 265 - 265, Japanese


• 29a-XB-4 Milimeter Wave ESR Measurements of k-(BEDT-TTF)_2Cu[N(CN)_2]X(X=Cl, Br)

  Oshima Y., Nakgawa N., Akioka K., Okubo S., Ohta H., Kanoda K.

  The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54(1) (1), 252 - 252, Japanese


• ESR study of an S=1 quasi one dimensional antiferromagnet Ni₂(232-tet)(μ-N₃)(ClO₄) in submillimeter wave region

  S.Kimura, S.Okubo, H.Ohta, S.Hayashi, H.Kikuchi, H.Nagawasa

  1999, Proc. of the 4th International Symposium on Advanced Physical Fields, Tsukuba, Japan, 223-226


• Temperature dependence ESR measurements of Cu₂(1,4-diazacycloheptane)₂Cl₄ in the millimeter wave region

  H.Ohta, S.Okubo, T.Tanaka, H.Kikuchi, H.Nagawasa

  1999, Proc. of the 4th International Symposium on Advanced Physical Fields, Tsukuba, Japan, 267-269


• Millimeter and Submillimeter Wave ESR Measurement of Ho₂Cu₂O₅ Aligned Powder Sample

  S. Okubo, T. Goto, T. Tanaka, H. Ohta, I. Mogi, K. Watanabe, M. Motokawa

  1999, 4th Symposium on Advanced Physical Fields : Quantum Phenomena in Advanced Materials at High Magnetic Fields, 251 - 254


• Cyclotron resonance study of theta-(BEDT-TTF)2I3

  OSHIMA Y, NAKAGAWA N, AKIOKA K, OHTA H, OKUBO S, TAMURA M, NISHIO Y, KAJITA K

  1999, Synth. Met., 103(1/3) (1/3), 1919 - 1920


• High field ESR measurement of heavily doped Si:Mn III

  NAKASHIMA Y., OHTA H., OKUBO S., NAKAYAMA H., NISINO T.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 196 - 196, Japanese


• Cicularly polarized cyclotron resonance measurements of α-(BEDT-TTF)_2MHg(SCN)_4

  OSHIMA Y., OKUBO S., AKIOKA K., OHTA H., KANODA K.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 308 - 308, Japanese


• Mllllmeter Wave ESR Measurement of (DI-DCNQI)_2Ag II

  NAKAGAWA N., OHTOA H., OKUBO S., KANODA K., HIRAKI K.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 302 - 302, Japanese


• Millimeter wave ESR of Mn_5Si_3 using the strip line technique

  ARIOKA T., OKUBO S., OHTA H., KULATOV E.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 473 - 473, Japanese


• High Field ESR measurements of Cu_2(dach)_2Cl_4 II

  TANAKA T., OKUBO S., OHTA H., KIKUCHI H., NAGASAWA H.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 490 - 490, Japanese


• Submillimeter wave ESR measurement of S=1 bond alternating chain IV

  KIMURA S., OKUBO S., OHTA H., KIKUCHI H., NAGASAWA H.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 547 - 547, Japanese


• Magnetization measurement of Nd_2BaNiO_5 single crystal

  OKUBO S., OHTA H., TANAKA T., YOKOO T., AKIMITSU J.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 546 - 546, Japanese


• High field ESR measurements of frustration system ZnCr_<1.6>Ga_<0.4>O_4

  ONO S., OHTA H., OKUBO S., KIKUCHI H., NAGASAWA H.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 590 - 590, Japanese


• Submillimeter wave ESR of aligned power sample of Ho_2Cu_2O_5

  GOTO T., TANAKA T., OKUBO S., OHTA H., MOGI I., WATANABE K., MOTOKAWA M.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 586 - 586, Japanese


• High Field ESR of CsCuCl_3 II

  YAMADA T., OKUBO S., OHTA H., NOJIRI H., MOTOKAWA M., TANAKA H.

  The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53(2) (2), 571 - 571, Japanese


• Millimeter Wave ESR Measurement of(DI-DCNQI)_2Ag

  NAKAGAWA N., AKIOKA K., OHTA H., OKUBO S., KANODA K., HIRAKI K.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 227 - 227, Japanese


• Cyclotron resonance mesurements of θ-(BEDT-TTF)_2I_3

  AKIOKA K., NAKAGAWA N., OSHIMA Y., OKUBO S., OHTA H., TAMURA M., NISHIO Y., KAJITA K.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 233 - 233, Japanese


• High field ESR measurement of heavily doped Si:Mn II

  NAKASHIMA Y., OHTA H., OKUBO S., NAKAYAMA H., NISINO T.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 144 - 144, Japanese


• High field ESR measurements of frustration system ZnCr_2O_4

  ONO S., OHTA H., OKUBO S., KIKUCHI H., NAGASAWA H.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 491 - 491, Japanese


• ESR observation of magnetic excitation between the singlet and triplet states

  野尻 浩之, 福田 哲也, 本河 光博, 秋光 純, 藤田 治, 林 繁利, 大久保 晋, 太田 仁

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 493 - 493, Japanese


• ESR measurements of one-dimensional quanyum spin system Sr_3CuPt_<1-p>Ir_pO_6 in submillimeter wave region II

  OKUBO S., TANAKA T., ARIOKA T., OHTA H., KITAMURA N.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 492 - 492, Japanese


• Submilimeter wave ESR of aligned power sample of Er_2Cu_2O_5

  OHTA H., IKEUCHI Y., OKUBO S., MOTOKAWA M., MOGI I., WATANABE K., KITAMURA N.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 491 - 491, Japanese


• High Magnetic Field ESR of CsCuCl_3

  YAMADA T., OKUBO S., OHTA H., NOJIRI H., MOTOKAWA M., TANAKA H.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 399 - 399, Japanese


• High Fields ESR measurements of Cu_2(dach)_2Cl_4

  TANAKA T., OKUBO S., OHTA H., KIKUCHI H., NAGASAWA H.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 400 - 400, Japanese


• Submillimeter wave ESR measurement of S=1 bond altemating chain III

  KIMURA S., HAYASHI S., OKUBO S., OHTA H., KIKUCHI H., NAGASAWA H., NOJIRI H., MOTOKAWA M.

  The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53(1) (1), 401 - 401, Japanese


• High-Frequency High-Field ESR of Quantum Double Spin Chain Systems KCuCl┣D23┫D2 and TlCuCl┣D23┫D2

  H. Tanaka, T, Takatsu W. Shiramura T. Kambe, H, Nojiri T, Yamada, S. Okubo, H. Ohta, M. Motokawa

  1998, Physica B, 246/247, 545 - 548


• 8a-C-11 ESR mesurements of β'-(BEDT-TTF)_2ICl_2 in millimeter wave region

  Akioka K., Ohta H., Okubo S., Miyagawa K., Kanoda K.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 300 - 300, Japanese


• 5a-P-4 ESR measurements of one-dimensional quantum spin system Sr_3CuPt_<1-p>Ir_pO_6 in submillimeter wave region

  Tanaka T., Arioka T., Okubo S., Ohta H., Kanno R., Kitamura N.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 554 - 554, Japanese


• 5a-P-9 Submillimeter wave ESR of Er_2Cu_2O_5

  Ikeuchi Y., Ohta H., Okubo S., Motokawa M., Kitamura N.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 556 - 556, Japanese


• 5a-P-3 Submillimeter wave ESR measurement of Ni_2(μ-N_3)_2(232-tet)_2(ClO_4)

  Kimura S., Hayashi S., Okubo S., Ohta H., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 554 - 554, Japanese


• 5a-P-1 Submillimeter Wave ESR of Ho_2BaNiO_5

  Yamada T., Okubo S., Ohta H., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 554 - 554, Japanese


• 5a-P-8 High field ESR measurements of frustration system LiCrTiO_4

  Ono S., Ohta H., Okubo S., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 555 - 555, Japanese


• 6a-YH-5 High field ESR and magnetization measurement of aligned powder sample of Nd_2BaNiO_5

  Okubo S., Ohta H., Hayashi M., Yamada T., Nojiri H., Sakon T., Motokawa M., Mogi I.., Watanabe K., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 467 - 467, Japanese


• 6a-YG-3 High field ESR measurement of heavily doped Si:Mn

  Ohta H., Nakashima Y., Okubo S., Nakayama H., Nishino T.

  The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52(2) (2), 561 - 561, Japanese


• 29a-C-5 Cyclotron resonance mesurements of BEDT-TTF system

  Akioka K, Ohta H, Okubo S, Kanoda K

  The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52(1) (1), 269 - 269, Japanese


• 29a-W-9 ESR measurements of one-dimensional antiferromagnet Sr_3CuPtO_6 in submillimeter wave region

  Hayashi M., Arioka T., Okubo S., Ohta H., Kanno R., Kitamura N.

  The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52(1) (1), 526 - 526, Japanese


• 31P-L-2 YTi0_3 and LaTiO_3 of submillimeter ESR

  Okubo S., Kimura S., Ohta H., Itoh M.

  The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52(1) (1), 511 - 511, Japanese


• 29a-W-8 Submillimeter wave ESR of Yb_2Cu_2O_5

  Ikeuchi Y., Ohta H., Okubo S., Motokawa M., Kitamura N.

  The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52(1) (1), 526 - 526, Japanese


• Triangular-Kagome antiferromagnet Cu_9X_2(cpa)_6xH_2O(X=Cl, Br)of submillimeter ESR

  Okubo S., Hayashi M., Ohta H., Kimura S., Motokawa M., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996(3) (3), 267 - 267, Japanese


• Submillimeter Wave ESR of Nd_2BaNiO_5

  Hayashi M., Okubo S., Ohta H., Kimura S., Motokawa M., Kikuchi H., Nagasawa H.

  The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996(3) (3), 269 - 269, Japanese