東谷 誠二Seiji Higashitani
Last Updated :2024/09/02
- 所属・職名
- 大学院先進理工系科学研究科 教授
- メールアドレス
- ultphiroshima-u.ac.jp
- 自己紹介
- 私は超伝導・超流動の物理を理論的に研究しています.特に,超伝導・超流動物質の界面(または表面)で起こる量子現象に興味をもっています.超伝導物質の界面には,物質内部には存在できない(界面に局在した)量子状態が出現します.同様な量子状態は液体ヘリウム3の超流動相にも現れます.このような界面量子状態は物質の個性を反映した多様な性質を示し,その多様性は超伝導・超流動の物理をとても豊かで魅力的なものにしています.
基本情報
学位
- 博士(学術) (広島大学)
- 修士(理学) (山口大学)
教育担当
- 【学士課程】 総合科学部 : 総合科学科 : 総合科学プログラム
- 【博士課程前期】 先進理工系科学研究科 : 先進理工系科学専攻 : 量子物質科学プログラム
- 【博士課程前期】 先進理工系科学研究科 : 先進理工系科学専攻 : 理工学融合プログラム
- 【博士課程後期】 先進理工系科学研究科 : 先進理工系科学専攻 : 量子物質科学プログラム
- 【博士課程後期】 先進理工系科学研究科 : 先進理工系科学専攻 : 理工学融合プログラム
研究分野
教育活動
授業担当
- 2024年, 教養教育, 1ターム, 一般力学I[1工二]
- 2024年, 教養教育, 3ターム, 一般力学II[1工二]
- 2024年, 学部専門, 2ターム, 物理科学演習I
- 2024年, 学部専門, 1ターム, 物理科学概論
- 2024年, 学部専門, 1ターム, 量子力学II
- 2024年, 学部専門, 2ターム, 量子力学演習II
- 2024年, 学部専門, 2ターム, Frontiers of Material Science (物質科学の最前線)
- 2024年, 修士課程・博士課程前期, セメスター(前期), 理工学融合特別演習A
- 2024年, 修士課程・博士課程前期, セメスター(後期), 理工学融合特別演習B
- 2024年, 修士課程・博士課程前期, 3ターム, 理工学融合共通科目2:グリーンな発展
- 2024年, 修士課程・博士課程前期, 3ターム, 相関系計測論
研究活動
学術論文(★は代表的な論文)
- Frictional motion of normal-fluid component of superfluid He-3 in aerogel, PHYSICAL REVIEW B, 82巻, 5号, 20100825
- ★, Surface Majorana Cone of the Superfluid He-3 B Phase, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80巻, 1号, 201101
- Subgap in the Edge States of Two-Dimensional Chiral Superconductor with Rough Surface, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80巻, 11号, 201111
- ★, Odd-frequency Cooper pairs and zero-energy surface bound states in superfluid He-3, PHYSICAL REVIEW B, 85巻, 2号, 20120112
- ★, Knudsen-to-Hydrodynamic Crossover in Liquid He-3 in a High-Porosity Aerogel, PHYSICAL REVIEW LETTERS, 108巻, 22号, 20120601
- ★, Magnetic Response of Odd-Frequency s-Wave Cooper Pairs in a Superfluid Proximity System, PHYSICAL REVIEW LETTERS, 110巻, 17号, 20130423
- Quasi-classical theory of rough surface effects on unconventional BCS states., Czechoslovak J. Phys., 46巻, S2号, pp. 1059-1060, 19960401
- Electromagnetic response of a kx ±iky superconductor: Effect of order-parameter collective modes, Phys. Rev. B, 62巻, 5号, pp. 3042-3045, 20000801
- Impurity scattering effect on superfluidity of 3He in aerogel, J. Low Temp. Phys., 114巻, 1/2号, pp. 161-172, 19990101
- Phase diagram of the Fulde-Ferrell-Larkin-Ovchinnikov state in a three-dimensional superconductor, J. Phys. Soc. Jpn., 67巻, 1号, pp. 280-289, 19980115
- ★, Mechanism of paramagnetic Meissner effect in high-temperature superconductors, J. Phys. Soc. Jpn., 66巻, 9号, pp. 2556-2559, 19970901
- ★, Theory of rough surface effects on the anisotropic BCS states, J. Low Temp. Phys., 103巻, 1/2号, pp. 1-22, 19960401
- Rough surface effects on d-wave superconductors, J. Phys. Soc. Jpn., 65巻, 6号, pp. 1540-1543, 19960615
- ★, Meissner effect in normal-superconducting proximity-contact double layers, J. Phys. Soc. Jpn., 64巻, 2号, pp. 549-564, 19950215
- Meissner effect in clean proximity-contact N-S double layer, Physica B, 194-196巻, pp. 1385-1386, 19940401
- Quasi-classical theory of the Andreev reflection at the N-S interface, Physica C, 185-189巻, pp. 1451-1452, 19910401
- Impurity effect on the order parameter collective mode in superfluid 3He in aerogel, AIP Conf. Proc., 850巻, pp. 249-250, 20060901
- Fulde-Ferrell-Larkin-Ovchinnikov state in thin films with rough surfaces, AIP Conf. Proc., 850巻, pp. 733-734, 20060901
- Raman spectra of p-wave superconductors with non-magnetic impurities, AIP Conf. Proc., 850巻, pp. 581-582, 20060901
- Surface condition dependence of transverse acoustic impedance in superfluid 3He, Journal of Physics: Conference Series, 150巻, pp. 032070(1–4), 20090301
- Odd-frequency Cooper pairs near the surfaces of superuid 3He-B, Journal of Physics: Conference Series, 400巻, pp. 012018, 20121201
- Low Temperature Properties of the Mermin-Ho Texture of Superuid 3He-A in a Cylinder, Journal of Physics: Conference Series, 400巻, pp. 012054, 20121201
- Drag Force on a High Porosity Aerogel in Liquid 3He, Journal of Physics: Conference Series, 400巻, pp. 012071, 20121201
- Superfluid density in He-3 film, PHYSICA B, 284巻, pp. 271-272, 200007
- Order parameter collective modes in Sr2RuO4, PHYSICA B, 284巻, pp. 539-540, 200007
- Effect of finite reflection at the interface on diamagnetic response of normal-superconducting proximity contact double layers, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 69巻, 11号, pp. 3493-3496, 200011
- Collision drag effect on propagation of sound in liquid He-3 in aerogel, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 70巻, 12号, pp. 3483-3486, 200112
- Rough surface effect on Meissner diamagnetism in normal-layer of N-S proximity-contact system, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71巻, 1号, pp. 293-299, 200201
- Transverse sound in liquid-He-3-aerogel system, PHYSICAL REVIEW LETTERS, 89巻, 21号, 20021118
- Viscoelastic theory of liquid He-3 in aerogel, PHYSICA B-CONDENSED MATTER, 329巻, pp. 299-300, 200312
- A-B transition of superfluid He-3 in aerogel under magnetic field, PHYSICA B-CONDENSED MATTER, 329巻, pp. 301-302, 200312
- Rough surface effect on diamagnetic response of normal-superconducting proximity contact system with arbitrary concentration of impurities, JOURNAL OF LOW TEMPERATURE PHYSICS, 132巻, 3-4号, pp. 147-165, 200308
- Collision drag effect on two-fluid hydrodynamics of superfluid He-3 in aerogel, JOURNAL OF LOW TEMPERATURE PHYSICS, 134巻, 3-4号, pp. 843-850, 200402
- Fourth sound propagation in superfluid He-3 in aerogel, JOURNAL OF LOW TEMPERATURE PHYSICS, 138巻, 1-2号, pp. 147-152, 200501
- NMR properties of a possible non-unitary state of superfluid He-3 in aerogel, JOURNAL OF LOW TEMPERATURE PHYSICS, 138巻, 1-2号, pp. 153-157, 200501
- Theory of acoustic impedance of superfluid He-3, JOURNAL OF LOW TEMPERATURE PHYSICS, 138巻, 1-2号, pp. 349-354, 200501
- Microscopic theory of sound propagation in the superfluid He-3-aerogel system, PHYSICAL REVIEW B, 71巻, 13号, 200504
- Observation of surface Andreev bound states of superfluid He-3 by transverse acoustic impedance measurements, PHYSICAL REVIEW LETTERS, 95巻, 7号, 20050812
- Sound propagation in superfluid He-3 in aerogel, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 66巻, 8-9号, pp. 1334-1338, 2005
- Transverse acoustic impedance of superfluid He-3-B, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 66巻, 8-9号, pp. 1352-1354, 2005
- Raman spectra of spin-triplet superconductor Sr2RuO4, PHYSICA B-CONDENSED MATTER, 383巻, 1号, pp. 82-83, 20060815
- Effect of order parameter collective mode on electronic Raman spectra of spin-triplet superconductor Sr2RuO4, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76巻, 3号, 200703
- Ultrasound attenuation of superfluid He-3 in aerogel, PHYSICAL REVIEW LETTERS, 98巻, 22号, 20070601
- Theory of transverse acoustic impedance of superfluid He-3, JOURNAL OF LOW TEMPERATURE PHYSICS, 149巻, 5-6号, pp. 294-313, 200712
- Surface Bound States in Superfluid He-3, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77巻, 11号, 200811
- ★, Proximity Effect between a Dirty Fermi Liquid and Superfluid He-3, JOURNAL OF LOW TEMPERATURE PHYSICS, 155巻, 1-2号, pp. 83-97, 200904
- New Anomaly in the Transverse Acoustic Impedance of Superfluid He-3-B with a Wall Coated by Several Layers of He-4, PHYSICAL REVIEW LETTERS, 103巻, 15号, 20091009
- Frictional Relaxation Time of He-3 Normal Fluid Component in Aerogel Obtained by Fourth Sound Resonance, JOURNAL OF LOW TEMPERATURE PHYSICS, 158巻, 1-2号, pp. 182-187, 201001
- ★, Strong Anisotropy in Spin Suceptibility of Superfluid He-3-B Film Caused by Surface Bound States, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 78巻, 12号, 200912
- Odd-frequency pairing effect on the superfluid density and the Pauli spin susceptibility in spatially nonuniform spin-singlet superconductors, PHYSICAL REVIEW B, 89巻, 18号, 20141209
- Spin Current as a Manifestation of Surface Odd-Frequency Pairing in Superfluid He-3, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83巻, 7号, 201407
- Fermi surface effect on spontaneous breaking of time-reversal symmetry in unconventional superconducting films, PHYSICAL REVIEW B, 91巻, 9号, 20150323
- Spin-Dependent Acoustic Response in the Nonunitary A(1) and A(2) Phases of Superfluid He-3 under High Magnetic Fields, PHYSICAL REVIEW LETTERS, 114巻, 10号, 20150310
- Phase Transition to a Time-Reversal Symmetry-Breaking State in d-Wave Superconducting Films with Rough Surfaces, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 84巻, 3号, 20150315
- Temperature Dependence of the Critical Thickness of d-Wave Superconducting Films, Physics Procedia, 65巻, pp. 25, 2015
- Rough Surface Effect on a Broken Time-reversal Pairing State in d-wave Superconducting Films, Physics Procedia, 65巻, pp. 169, 2015
- Multiple Phase Transition in Unconventional Superconducting Films, JOURNAL OF LOW TEMPERATURE PHYSICS, 187巻, 5-6号, pp. 545-552, 201706
- Subgap in the Surface Bound States Spectrum of Superfluid He-B with Rough Surface, JOURNAL OF LOW TEMPERATURE PHYSICS, 190巻, 5-6号, pp. 277-301, 201803
- Influence of diffuse surface scattering on the stability of superconducting phases with spontaneous surface current generated by Andreev bound states, PHYSICAL REVIEW B, 98巻, 13号, 201810
- Surface Bound States and Spontaneous Edge Currents in Chiral Superconductors: Effect of Spatially Varying Order Parameter, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 89巻, 3号, 20200315
著書等出版物
- 1999年, 「物理学基礎実験」第2版,宇田川眞行・永井克彦・星野公三 編, 共立出版株式会社, 1999年, 教科書, 共著
- 2014年, [基礎から学ぶ]力学,乾雅祝・畠中憲之・星野公三 共編著, 培風館, 2014年, 教科書, 共著
招待講演、口頭・ポスター発表等
- ゼロエネルギー表面アンドレーエフ束縛状態の状態密度, 佐藤豪太, 長登康, 東谷誠二, 日本物理学会春季大会, 2024年03月18日, 通常, 日本語
- カイラル超伝導体の表面状態密度, 東谷誠二, 長登康, 日本物理学会春季大会, 2023年03月23日, 通常, 日本語
受賞
- 2013年03月, 第18回日本物理学会論文賞, Surface Majorana Cone of the Superfluid 3He B phase
社会活動
その他社会貢献活動(広大・部局主催含)
- 超低温の世界, 中高大連携公開講座, 2008年/07月/19日, 講師, 出前授業