Kotani Akio 小谷章雄

… Alternative Names

KOTANI Akio 小谷章雄

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Researcher Number	90029504
External Links
Affiliation (Current)	2022: 東京大学, 名誉教授, 名誉教授
Affiliation (based on the past Project Information) *help	2012: 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 共同研究員 2011: 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 非同研究員 2010: 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 共同研究員 1992 – 2001: 東京大学, 物性研究所, 教授 1994: 東京大学, 物性研, 教授 1990: 東京大学, 物性研究所, 教授 1988 – 1990: Professor, Tohoku University. Faculty of Science, 理学部, 教授
Review Section/Research Field	Principal Investigator Condensed matter physics I / 固体物性Ⅰ(光物性・半導体・誘電体) / 物性一般（含極低温･固体物性に対する理論） Except Principal Investigator 固体物性Ⅰ(光物性・半導体・誘電体) / 物性一般（含極低温･固体物性に対する理論）
Keywords	Principal Investigator 内穀光電子スペクトル / 不純物アンダ-ソン模型 / 多重項構造 / 希土類 / X線吸収 / 共鳴X線発光 / 希土類化合物 / 高エネルギー分光 / 遷移金属化合物 / 偏光依存性 … More / X線吸収スペクトル / アクチナイド二酸化物 / 交換相互作用 / 混合原子価状態 / 混成相互作用 / 混合原子価 / 強磁場 / 磁気円二色性 / Ｘ線吸収 / 共鳴Ｘ線発光 / 光電子放出 / 多重項 / 原子価混合 / オージェ緩和 / 稀土類 / High energy spectroscopy / X-ray Absorption / Photoelectron emission / Rare erath / Transition metal compounds / Multiplet / Valence mixing / Auger relaxation / 共鳴X線発光分光 / クラスター模型 / 電荷移動 / 電子相関 / 円偏光磁気二色性 / 干渉効果 / 電気四重極子励起 / 配置間相互作用 / 内殻正孔 / 遍歴性 / 局在性 / 円偏光二色性 / spectroscopy / rare-earth compounds / transtion-metal compounds / cluster model / polarization-dependence / charge transfer / electron correlation / magnetic circular dichroism / 高エネルギ-分光 / 稀土類化合物 / アクチナイド化合物 / 高温超伝導体 / 内殻電子 / 酸化物高温超伝導体 / 内穀光吸収スペクトル / 内穀発光スペクトル / アンダーソン模型 / 内殻光吸収スペクトル / 内殻光電子スペクトル / 内殻光放出スペクトル / High Energy Spectroscopy / Impurity Anderson Model / Multiplet Structure / Rare Earth Compounds / Actinide Compounds / High-T_c Superconductors / Polarization Dependence / Core Electron … More Except Principal Investigator 強相関電子系 / モット絶縁体 / 銅酸化物 / バンド理論 / tーJモデル / ハバ-ド模型 / モット転移 / Heavy Fermion / ハバード模型 / クラスタ-計算 / 異常金属相 / 超伝導対称性 / スピン・ギャップ / スピン・電荷分離 / 巨大磁気抵抗 / d-pモデル / ハバードモデル / N^<-1>展開 / t-Jモデル / フェルミ液体 / 超伝導磁束 / RVB / 磁気円二色性 / 逆光電子 / 高分解能光電子 / ヘビーフェルミオン / 価数揺動 / 二次元電子分光 / 表面・界面 / 磁気円偏光二色性 / 角度分解光電子分光 / 二次元光電子パターン / スピン偏極 / 強相関 / 内殻分光 / 遠赤外 / 高分解能光電子分光 / スピン偏極光電子分光 / 低温 / 相転移 / MCD / Inwrse Photoemission / High Resolution Photoemissic / Strong Correlation / Valence Fluctuation / 2-D Photoemission / Surface・Interface / 遷移金属酸化物 / 酸化物高温超伝導体 / 量子臨界現象 / 軌道縮重効果 / インコヒーレント金属 / 非フェルミ液体 / t-J模型 / 高温超伝導 / 異常金属 / 反強磁性 / Mott transition / transition metal oxide / strongly correlated slectron systems / cuprate high-TィイD2cィエD2 superconductors / quantum critical phenomena / orbital degenerary effect / incoherent metals / non-fermi liquid / 電子帯構造 / スピンのゆらぎ / 構造相転移 / 重いフェルミ粒子 / 超伝導 / 遷移金属化合物 / 稀土類化合物 / アクナイド化合物 / アクチナイド化合物 / 遷移金属化金物 / Electronic Band Structure / Spin Fluctuation / Structural Phase Transition / Superconductivity / Transition-Metal Compound / Rare-Earth Compound Less

Theory of X-ray Absorption Magnetic Circular Dichroism and Resonant X-ray Emission Spectra for Mixed Valence Rare-earth Compounds in High Magnetic FieldsPrincipal Investigator
- Principal Investigator
  
  KOTANI Akio
- Project Period (FY)
  2010 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Condensed matter physics I
- Research Institution
  High Energy Accelerator Research Organization
Theory of Resonant X-ray Emission Spectra in f and Electron SystemsPrincipal Investigator
- Principal Investigator
  
  KOTANI Akio
- Project Period (FY)
  1998 – 2001
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  固体物性Ⅰ(光物性・半導体・誘電体)
- Research Institution
  The University of Tokyo
Theories of anomalous metallic state and Mott trasition
- Principal Investigator
  
  IMADA Masatoshi
- Project Period (FY)
  1995 – 1997
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  University of Tokyo
High Energy Spectroscopy in f and d Electron SystemsPrincipal Investigator
- Principal Investigator
  
  KOTANI Akio
- Project Period (FY)
  1993 – 1994
- Research Category
  
  Grant-in-Aid for international Scientific Research
- Research Institution
  Institute for Solid State Physics, University of Tokyo
Solid State Spectroscopy in Wide Energy Region
- Principal Investigator
  
  SUGA Shigemasa
- Project Period (FY)
  1993 – 1995
- Research Category
  
  Grant-in-Aid for Co-operative Research (A)
- Research Field
  
  固体物性Ⅰ(光物性・半導体・誘電体)
- Research Institution
  Osaka University
高温超伝導の科学「超伝導理論」
- Principal Investigator
  
  福山秀敏
- Project Period (FY)
  1992 – 1994
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  The University of Tokyo
超伝導発現機構の解明(超伝導理論班)
- Principal Investigator
  
  福山秀敏
- Project Period (FY)
  1990
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  The University of Tokyo
アクチナイド化合物の高エネルギ-分光理論Principal Investigator
- Principal Investigator
  
  小谷章雄
- Project Period (FY)
  1990
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  Tohoku University
超伝導発現機構の解明(超伝導理論班)
- Principal Investigator
  
  福山秀敏
- Project Period (FY)
  1989
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  The University of Tokyo
Theory of High-Energy Spectroscopy in f and d Electron SystemsPrincipal Investigator
- Principal Investigator
  
  KOTANI Akio
- Project Period (FY)
  1988 – 1989
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  物性一般（含極低温･固体物性に対する理論）
- Research Institution
  TOHOKU UNIVERSITY
Theoretical Study on Itinerant Electron Systems Containing Transition-Metal, Rare-Earth, and Actinide Elements
- Principal Investigator
  
  MOTIZUKI Kazuko
- Project Period (FY)
  1986 – 1988
- Research Category
  
  Grant-in-Aid for Co-operative Research (A)
- Research Field
  
  物性一般（含極低温･固体物性に対する理論）
- Research Institution
  Osaka University

All 2013 2012 2011 2010 Other

All Journal Article Presentation

[Journal Article] Theoretical Analysis of Experimental Valence and Magnetization Data around the Field- and Temperature-Induced Valence Transitions of EuNi2(Si0:18Ge0:82)22013
- Author(s)
  小谷章雄
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: VOL. 82 Issue: 4 Pages: 044710-044710
- DOI
  10.7566/jpsj.82.044710
- NAID
  210000132523
- ISSN
  0031-9015, 1347-4073
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341, KAKENHI-PROJECT-23224009
[Journal Article] Theory of Electric Quadrupole Transition in the XMCD Spectra at the Yb L3 Edge of Mixed Valence Yb Compounds in High Magnetic Fields2013
- Author(s)
  小谷章雄
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: VOL. 430
- DOI
  10.1088/1742-6596/430/1/012002
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theoretical Analysis of Experimental Valence and Magnetization Data around the Fieldand Temperature-Induced Valence Transitions of EuNi_2(Si_<0.18>Ge_<0.82>)_2: Unified Interpretation for the Resultsfrom Soft X-ray Absorption2013
- Author(s)
  小谷章雄、中村哲也
- Journal Title
  
  Its Magnetic Circular Dichroism, and Magnetostatic Measurements 、J. Phys. Soc. Jpn.
  
  Volume: Vol.82
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theory of Electric Quadrupole Transition in the XMCD Spectra at the Yb L_3Edge of Mixed Valence Yb Compounds in High Magnetic Fields2013
- Author(s)
  小谷章雄
- Journal Title
  
  J. Phys.: Conf. Series
  
  Volume: Vol.430
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Single impurity Anderson model versus density functional theory for describing Ce L_3 x-ray absorption spectra of CeFe_2 : Resolution of a recent controversy2012
- Author(s)
  小谷章雄, 他4名
- Journal Title
  
  Physical Review Letters
  
  Volume: VOL.108
- DOI
  10.1103/physrevlett.108.036403
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] High-Magnetic-Field X-ray Absorption and Magnetic Circular Dichroism Spectroscopy in the Mixed-Valent Compound YbAgCu_42012
- Author(s)
  中村俊幸、松田康弘、J.-L.Her、金道浩一、道村真司、稲見俊哉、水牧仁一朗、河村直己、鈴木基寛、B.Chen、H.Ohta、吉村一良、小谷章雄
- Journal Title
  
  J. Phys. Soc. Jpn
  
  Volume: Vol.81
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Soft-X-ray Magnetic Circular Dichroism under Pulsed High Magnetic Fields at Eu M_<4,5>Edges of Mixed Valence Compound EuNi_2(Si_<0.18>Ge_<0.82>)_22012
- Author(s)
  中村哲也、広野等子、木下豊彦、鳴海康雄、林美咲、野尻浩之、光田暁弘、和田裕文、児玉謙司、金道浩一、小谷章雄
- Journal Title
  
  J. Phys. Soc. Jpn.
  
  Volume: Vol.81
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theoretical analysis of x-ray magnetic circular dichroism at the Yb L_<2,3> absorption edges of YbInCu_4 in high magnetic fields around the field-induced valence transition2012
- Author(s)
  小谷章雄
- Journal Title
  
  European Physical Journal B
  
  Volume: VOL.85(掲載確定)(未定)
- DOI
  10.1140/epjb/e2011-20577-y
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theoretical analysis of X-ray magnetic circular dichroism at the Yb L_<2,3>absorption edges of YbInCu_4in high magnetic fields around the field-induced valence transition2012
- Author(s)
  小谷章雄
- Journal Title
  
  Eur.Phys. J. B
  
  Volume: Vol.85
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Single Impurity Anderson Model versus Density Functional Theory for Describing Ce L_3X-Ray Absorption Spectra of CeFe_2: Resolution of a Recent Controversy2012
- Author(s)
  小谷章雄、K.O.Kvashnina、P.Glatzel、J.C.Parlebas 、 G.Schmerber
- Journal Title
  
  Phys. Rev. Lett
  
  Volume: Vol.108
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Charge-Transfer Satellite in Ce@C_<82> Probed by Resonant X-ray Emission Spectroscopy2011
- Author(s)
  山岡人志、小谷章雄, 他6名
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: VOL.80
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theory of low energy excitations in resonant inelastic x-ray scattering for rare-earth systems : Yb compounds as typical examples2011
- Author(s)
  小谷章雄
- Journal Title
  
  Physical Review B
  
  Volume: VOL.83
- DOI
  10.1103/physrevb.83.165126
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Crystal Field Effect on X-ray Magnetic Circular Dichroism Spectra at the L_<2,3> Absorption Edges of Mixed-Valence Ce and Yb Compounds in High Magnetic Fields2011
- Author(s)
  小谷章雄
- Journal Title
  
  European Physical Journal B
  
  Volume: (掲載決定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Crystal Field Effect on X-ray Magnetic Circular Dichroism Spectra at the L_<2,3>Absorption Edges of Mixed-Valence Ce and Yb Compounds in High Magnetic Fields2011
- Author(s)
  小谷章雄
- Journal Title
  
  Eur. Phys. J. B
  
  Volume: Vol.81 Pages: 49-63
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theory of Low Energy Excitations in Resonant Inelastic X-ray Scattering for Rare-Earth Systems: Yb Compounds as Typical Examples2011
- Author(s)
  小谷章雄
- Journal Title
  
  Phys. Rev. B
  
  Volume: Vol.83
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theory of high-magnetic-field XAS and XMCD spectra at the Yb L and M edges around the field -induced valence transition of YbInCu_42010
- Author(s)
  小谷章雄
- Journal Title
  
  J. Electron Spectrosc. Relat. Phenom.
  
  Volume: Vol.181 Pages: 168-173
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Journal Article] Theory of high-magnetic-field XAS and XMCD spectra at the Yb L and Medges around the field-induced valence transition of YbInCu_42010
- Author(s)
  小谷章雄
- Journal Title
  
  Journal of Electron Spectroscopy and Related Phenomena
  
  Volume: VOL.181 Pages: 168-172
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] YbInCu_4 と YbAgCu_4 の Yb L_3 吸収端の強磁場 XMCD における電気四重極子遷移2013
- Author(s)
  小谷章雄
- Organizer
  日本物理学会
- Place of Presentation
  広島大学
- Year and Date
  2013-03-26
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] CeFe_2 の Ce L_3 端X線吸収および共鳴X線発光スペクトルにおける Ce5d バンド状態密度と内殻正孔の効果2012
- Author(s)
  小谷章雄
- Organizer
  日本物理学会
- Place of Presentation
  横浜国立大学
- Year and Date
  2012-09-18
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] 強磁場下の YbAgCu_4の Yb L_3 吸収端 XMCD における電気四重極子遷移2012
- Author(s)
  小谷章雄、松田康弘
- Organizer
  日本物理学会
- Place of Presentation
  関西学院大学
- Year and Date
  2012-03-27
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] パルス強磁場による EuNi_2(Si_<0.18>Ge_<0.82>)_2 の軟X線吸収 MCD 実験の理論解析2011
- Author(s)
  小谷章雄、中村哲也、鳴海康雄、林美咲、光田暁弘、広野等子、児玉謙司、森岡貴之、木下豊彦、和田裕文、金道浩一、野尻浩之
- Organizer
  日本物理学会
- Place of Presentation
  富山大学
- Year and Date
  2011-09-23
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] パルス強磁場によるEuNi_2(Si_<0.18>Ge_<0.82>)_2の軟X線吸収MCD実験の理論解析2011
- Author(s)
  小谷章雄, 他11名
- Organizer
  日本物理学会
- Place of Presentation
  富山大学(富山県)
- Year and Date
  2011-09-23
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] YbInCu_4 の磁場誘起価数転移におけるX線吸収磁気円二色性と共鳴X線非弾性散乱の理論2010
- Author(s)
  小谷章雄
- Organizer
  日本物理学会
- Place of Presentation
  岡山大学
- Year and Date
  2010-03-21
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] 混合原子価Ce化合物のL端励起共鳴X線発光における新しい分光データとその理論2010
- Author(s)
  小谷章雄
- Organizer
  日本物理学会
- Place of Presentation
  大阪府立大学(大阪府)
- Year and Date
  2010-09-23
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] Theory of Low Energy Excitations in Resonant Inelastic X-ray Scattering for Rare Earth Systems2010
- Author(s)
  小谷章雄
- Organizer
  7th International Conference on Inelastic X-ray Scattering
- Place of Presentation
  Grenoble
- Year and Date
  2010-10-12
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] A New Method of Directly Determining the Core-hole Effect in the Ce L3XAS of Mixed Valence Ce Compounds --- An Application of Resonant X-ray Emission Spectroscopy2010
- Author(s)
  小谷章雄、K.O.Kvashnina、S.M.Butorin、P.Glatzel
- Organizer
  37th Inter-national Conference on Vacuum Ultra-violet and X-ray Physics
- Place of Presentation
  Vancouver
- Year and Date
  2010-07-12
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] CeFe2のCe L3端Ｘ線吸収および共鳴Ｘ線発光スペクトルにおけるCe5dバンド状態密度と内殻正孔の効果
- Author(s)
  小谷章雄
- Organizer
  日本物理学会
- Place of Presentation
  横浜国立大学（神奈川県）
- Data Source
  KAKENHI-PROJECT-22540341
[Presentation] YbInCu4とYbAgCu4のYb L3吸収端の強磁場XMCDにおける電気四重極子遷移
- Author(s)
  小谷章雄
- Organizer
  日本物理学会
- Place of Presentation
  広島大学（広島県）
- Data Source
  KAKENHI-PROJECT-22540341

1. OKADA Kozo (70194355)

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2. 福山秀敏 (10004441)

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3. IMADA Masatoshi (70143542)

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4. SHIBA Hiroyuki (30028196)

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5. KURODA Yoshihiro (60013504)

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6. TACHIKI Masashi (20028111)

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7. SHIN Shigi (00162785)

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8. JO Takeo (20093487)

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9. 前川禎通 (60005973)

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10. 寺倉清之 (40028212)

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11. KOIDE Tsuneharu (10150012)

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12. TANAKA Satoshi (80236588)

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13. FUJIMORI Atsushi (10209108)

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14. SUGA Shigemasa (40107438)

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15. NANBA Takao (30091721)

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16. IMADA Shin (90240837)

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17. SUZUKI Naoshi (40029559)

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18. DAIMON Hiroshi (20126121)

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19. CHO Kikuo (60013489)

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20. KURAMOTO Yoshio (70111250)

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21. OGATA Masao (60185501)

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22. OGASAWARA Haruhiko (80262161)

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23. MOTIZUKI Kazuko (90029413)

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24. YANASE Akira (60004280)

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25. MORIYA Toru (00013467)

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26. KAYANUMA Yosuke (80124569)

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31. 長谷川彰 (40004329)

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32. 金森順次郎 (10028079)

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33. 糟谷忠雄 (30004245)

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34. 浅野攝郎 (80013499)

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35. 芳田奎 (40013445)

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36. ABBATE M.

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37. STEINER P.

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38. CARRA P.

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39. THOLE B.t.

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40. PARLEBAS J.c.

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41. 近藤淳

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42. VAN der Laan

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43. SAWATZKY G.A

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44. LAAN G.van der

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45. SWATSUKI G.a.

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46. CARRA P

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47. ABBATE M

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48. THOLE B.T

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49. PARLEBAS J.C

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Kotani Akio 小谷 章雄

KOTANI Akio 小谷 章雄

Research Projects

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Co-Researchers

Theory of X-ray Absorption Magnetic Circular Dichroism and Resonant X-ray Emission Spectra for Mixed Valence Rare-earth Compounds in High Magnetic FieldsPrincipal Investigator

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Theory of Resonant X-ray Emission Spectra in f and Electron SystemsPrincipal Investigator

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Theories of anomalous metallic state and Mott trasition

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High Energy Spectroscopy in f and d Electron SystemsPrincipal Investigator

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Solid State Spectroscopy in Wide Energy Region

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高温超伝導の科学「超伝導理論」

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超伝導発現機構の解明(超伝導理論班)

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アクチナイド化合物の高エネルギ-分光理論Principal Investigator

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超伝導発現機構の解明(超伝導理論班)

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Theory of High-Energy Spectroscopy in f and d Electron SystemsPrincipal Investigator

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Theoretical Study on Itinerant Electron Systems Containing Transition-Metal, Rare-Earth, and Actinide Elements

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[Journal Article] Theoretical Analysis of Experimental Valence and Magnetization Data around the Field- and Temperature-Induced Valence Transitions of EuNi2(Si0:18Ge0:82)22013

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[Journal Article] Theory of Electric Quadrupole Transition in the XMCD Spectra at the Yb L3 Edge of Mixed Valence Yb Compounds in High Magnetic Fields2013

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Data Source

[Journal Article] Theoretical Analysis of Experimental Valence and Magnetization Data around the Fieldand Temperature-Induced Valence Transitions of EuNi_2(Si_<0.18>Ge_<0.82>)_2: Unified Interpretation for the Resultsfrom Soft X-ray Absorption2013

Author(s)

Journal Title

Kotani Akio 小谷章雄

KOTANI Akio 小谷章雄