重い電子の人工制御

2015 Fiscal Year Annual Research Report

• Project/Area Number: 25220710
• Research Institution: Kyoto University
• Principal Investigator: 松田 祐司 京都大学, 理学(系)研究科(研究院), 教授 (50199816)
• Co-Investigator(Kenkyū-buntansha): 芝内 孝禎 東京大学, 新領域創成科学研究科, 教授 (00251356) ; 笠原 成 京都大学, 理学(系)研究科(研究院), 助教 (10425556) ; 花栗 哲郎 国立研究開発法人理化学研究所, その他部局等, その他 (40251326) ; 寺嶋 孝仁 京都大学, 学内共同利用施設等, 教授 (40252506)
• Project Period (FY): 2013-05-31 – 2018-03-31
• Keywords: 重い電子系 / 人工超格子 / 空間反転対称性 / 新奇超伝導状態 / 量子臨界点 / 分子線エピタキシー / 走査型トンネル顕微鏡 / 界面制御

Outline of Annual Research Achievements

当該研究は、これまで不可能であった重い電子の人工制御により、自然界には存在しない2次元重い電子系物質を人工創製し、新奇な電子状態やエキゾチックな超伝導状態の創出と解明、更には、関連する重い電子系物質や鉄系超伝導体などの非従来型超伝導における電子状態、超伝導状態の包括的な解明を目的とするものである．

① 本プロジェクトでは、希土類化合物に特化した独自の分子線エピタキシー(MBE)装置と、3He冷凍機、及び11 Tまでの強磁場印加が可能な走査トンネル顕微鏡(STM)装置を融合したMBE-STM一体システムの開発を行ってきた．本年度の研究では、これを用いて重い電子系化合物CeCoIn5のエピタキシャル薄膜において世界初のSTM観測を行ない、近藤混成ギャップと超伝導ギャップの明瞭な観測を行った．更に、MBE法の特徴を活かしてCeCoIn5に微量なLa元素を不純物として人工的に導入し、制御された不純物周りでの近藤ホールの観測を行った．

② 現有のMBE装置を用いて、様々な人工超格子の作製に取り組んだ。特に、層状重い電子系化合物であるCe115系に関して、重い電子系超伝導体と通常金属の積層構造(CeCoIn5/YbCoIn5)、重い電子系反強磁性体と通常金属の積層構造(CeRhIn5/YbRhIn5)、重い電子系超伝導体のトリコロール格子(YbRhIn5/CeCoIn5/YbCoIn5)、更には重い電子系超伝導体と重い電子系反強磁性体のハイブリッド超格子(CeCoIn5/ CeRhIn5)の作製を行い、各々の電子状態および超伝導特性について研究を行った．これに加えて、核磁気共鳴実験グループやTHz応答研究グループとの共同研究により、人工超格子における異常な電子状態の研究に取り組んだ．

Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

本プロジェクトでは、当初の研究目標を予定通り達成しており、個々の課題について掲げた研究目標に関して着実に研究成果を得ている．これに加えて本プロジェクトでは、当初の研究目的を超える予期せぬ研究の進展を複数得ており、このことから、本プロジェクトでは当初の計画以上に進展していると考える．

Strategy for Future Research Activity

これまでの人工超格子、及びMBE-STM装置を用いた研究について、当初掲げた研究最終目標を達成するとともに、より大きな研究展開を目指す．

重い電子系化合物はスピン軌道相互作用が強く、局所的な空間反転対称性の破れにより生じるラシュバ分裂によって、全体の電子状態は大きな変化を受ける．このような系は、強相関電子系におけるトポロジカル励起を実現する上で理想的な系であることが理論的に指摘されており、今後、トポロジカルな電子状態、超伝導状態の研究に発展させたい．また最近成功した、重い電子系超伝導体の上下を異なる物質で挟んだいわゆるトリコロール超格子の研究をさらに継続して発展させる．この超格子では空間反転対称性をマクロに破り、またその大きさも人工的に制御できる．
また、同じく最近作製に成功した重い電子系超伝導体CeCoIn5と重い電子系反強磁性金属CeRhIn5を積層させたハイブリッド超格子の研究をより発展させたい．この系では各層ごとにd波超伝導と反強磁性が交互に共存することがわかってきた．この系に圧力をかけることにより反強磁性状態を量子臨界状態に持って行くことが可能である．この場合、非従来型超伝導と量子臨界層が交互に共存することになり、これまで実現されたことのない新しい量子臨界状態をつくり出すことが期待される．

MBE法により作製した重い電子系化合物に対するトンネル分光測定で特に今後考えているのが、従来金属YbCoIn5の上に原子層の厚みしかもたない重い電子系超伝導体CeCoIn5を成長させた2次元近藤格子の研究である．強相関のd波2次元超伝導体でスピン軌道相互作用が強い系はこれまでに前例がなく、この系で予想される2次元超伝導では、大きな超伝導揺らぎや擬ギャップなど、銅酸化物や冷却原子気体で長年議論されてきた状態の解明、更にはトポロジカル超伝導状態などの実現へとつながると期待できる．

Research Products

• [Int'l Joint Research] LNCMI Toulouse/CNRS/ESPCI-ParisTech(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: LNCMI Toulouse/CNRS/ESPCI-ParisTech
• [Int'l Joint Research] Karlsruhe Institute of Technology/Dresden High Magnetic Field laboratory/Technische Universiat Dresden(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: Karlsruhe Institute of Technology/Dresden High Magnetic Field laboratory/Technische Universiat Dresden
  • # of Other Institutions: 1
• [Int'l Joint Research] National High Field Laboratory/Rice University/Los Alamos National Laboratory(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: National High Field Laboratory/Rice University/Los Alamos National Laboratory
  • # of Other Institutions: 1
• [Int'l Joint Research] Peking University/Chinese Academy of Sciences(中国)
  • Country Name: CHINA
  • Counterpart Institution: Peking University/Chinese Academy of Sciences
• [Int'l Joint Research] University of Oxford(英国)
  • Country Name: UNITED KINGDOM
  • Counterpart Institution: University of Oxford
• [Int'l Joint Research]
  • # of Other Countries: 1
• [Journal Article] Nematic magnetoelastic effect contrasted between Ba(Fe1-xCox)2As2 and FeSe (2016)
  • Author(s): Y. Hu, X. Ren, R. Zhang, H-q. Luo, S. Kasahara, T. Watashige, T. Shibauchi, P. Dai, Y. Zhang, Y. Matsuda, and Y. Li
  • Journal Title: Physical Review B Volume: 93 Pages: 060504
  • DOI: https://doi.org/10.1103/PhysRevB.93.060504
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Possible observation of highly itinerant quantum magnetic monopoles in the frustrated pyrochlore Yb2Ti2O7 (2016)
  • Author(s): Y. Tokiwa, T. Yamashita, M. Udagawa, S. Kittaka, T Sakakibara, D. Terazawa, Y. Shimoyama, T. Terashima, Y. Yasui, T. Shibauchi, Y. Matsuda
  • Journal Title: Nature Communications Volume: 7 Pages: 10807
  • DOI: doi:10.1038/ncomms10807
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Fermi surface reconstruction in FeSe under high pressure (2016)
  • Author(s): T. Terashima, N. Kikugawa, A. Kiswandhi, D. Graf, E.-S. Choi, J. S. Brooks, S. Kasahara, T. Watashige, Y. Matsuda, T. Shibauchi, T. Wolf, A. E. Bohmer, F. Hardy, C. Meingast, H. v. Lohneysen, and S. Uji
  • Journal Title: Physical Review B Volume: 93 Pages: 094505
  • DOI: https://doi.org/10.1103/PhysRevB.93.094505
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] From Kondo Lattices to Kondo Superlattices (2016)
  • Author(s): M. Shimozawa, S. K. Goh, T. Shibauchi, Y. Matsuda
  • Journal Title: Reports on Progress in Physics Volume: - Pages: -
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Observation of Zeeman effect in topological surface state with distinct material dependence (2016)
  • Author(s): Ying-Shuang Fu, T. Hanaguri, K. Igarashi, M. Kawamura, M. S. Bahramy, and T. Sasagawa
  • Journal Title: Nature Communications Volume: 7 Pages: 10829
  • DOI: 10.1038/ncomms10829
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Interface between Heavy Fermions and Normal Electrons Investigated by Spatially Resolved Nuclear Magnetic Resonance (2015)
  • Author(s): T. Yamanaka, M. Shimozawa, R. Endo, Y. Mizukami, H. Shishido, T. Terashima, T. Shibauchi, Y. Matsuda, and K. Ishida
  • Journal Title: Physical Review B Volume: 92 Pages: 241105
  • DOI: http://dx.doi.org/10.1103/PhysRevB.92.241105
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Momentum-Dependent Sign Inversion of Orbital Order in Superconducting FeSe (2015)
  • Author(s): Y. Suzuki, T. Shimojima, T. Sonobe, A. Nakamura, M. Sakano, H. Tsuji, J. Omachi, K. Yoshioka, M. Kuwata-Gonokami, T. Watashige, R. Kobayashi, S. Kasahara, T. Shibauchi, Y. Matsuda, Y. Yamakawa, H. Kontani, and K. Ishizaka
  • Journal Title: Physical Review B Volume: 92 Pages: 205117
  • DOI: http://dx.doi.org/10.1103/PhysRevB.92.205117
  • Peer Reviewed
• [Journal Article] Enhancement of Critical Current Density and Mechanism of Vortex Pinning in H+-Irradiated FeSe Single Crystal (2015)
  • Author(s): Y. Sun, S. Pyon, T. Tamegai, R. Kobayashi, T. Watashige, S. Kasahara, Y. Matsuda, and T. Shibauchi
  • Journal Title: Applied Physics Express Volume: 8 Pages: 113102
  • DOI: http://dx.doi.org/10.7567/APEX.8.113102
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Critical Current Density, Vortex Dynamics, and Phase Diagram of Single-Crystal FeSe (2015)
  • Author(s): Y. Sun, S. Pyon, T. Tamegai, R. Kobayashi, T. Watashige, S. Kasahara, Y. Matsuda, and T. Shibauchi
  • Journal Title: Physical Review B Volume: 92 Pages: 144509
  • DOI: http://dx.doi.org/10.1103/PhysRevB.92.144509
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Evidence for Time-Reversal Symmetry Breaking of the Superconducting State near Twin-Boundary Interfaces in FeSe Revealed by Scanning Tunneling Spectroscopy (2015)
  • Author(s): T. Watashige, Y. Tsutsumi, T. Hanaguri, Y. Kohsaka, S. Kasahara, A. Furusaki, M. Sigrist, C. Meingast, T. Wolf, H. v. Löhneysen, T. Shibauchi, and Y. Matsuda
  • Journal Title: Physical Review X Volume: 5 Pages: 031022
  • DOI: http://dx.doi.org/10.1103/PhysRevX.5.031022
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Dichotomy between the Hole and Electron Behavior in Multiband Superconductor FeSe Probed by Ultrahigh Magnetic Fields (2015)
  • Author(s): M. D. Watson, T. Yamashita, S. Kasahara, W. Knafo, M. Nardone, J. Beard, F. Hardy, A. McCollam, A. Narayanan, S. F. Blake, T. Wolf, A. A. Haghighirad, C. Meingast, A. J. Schofield, H. von Löhneysen, Y. Matsuda, A. I. Coldea, and T. Shibauchi
  • Journal Title: Physical Review Letters Volume: 115 Pages: 027006
  • DOI: http://dx.doi.org/10.1103/PhysRevLett.115.027006
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Imaging ambipolar two-dimensional carriers induced by the spontaneous electric polarization of a polar semiconductor BiTeI (2015)
  • Author(s): Y. Kohsaka, M. Kanou, H. Takagi, T. Hanaguri, and T. Sasagawa
  • Journal Title: Physical Review B Volume: 91 Pages: 245312
  • DOI: http://dx.doi.org/10.1103/PhysRevB.91.245312
  • Peer Reviewed
• [Journal Article] Optical conductivity evidence of clean-limit superconductivity in LiFeAs (2015)
  • Author(s): R. P. S. M. Lobo, G. Chanda, A. V. Pronin, J. Wosnitza, S. Kasahara, T. Shibauchi, and Y. Matsuda
  • Journal Title: Physical Review B Volume: 91 Pages: 174509
  • DOI: http://dx.doi.org/10.1103/PhysRevB.91.174509
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Pressure-Induced Antiferromagnetic Transition and Phase Diagram in FeSe (2015)
  • Author(s): T. Terashima, N. Kikugawa, S. Kasahara, T. Watashige, T. Shibauchi, Y. Matsuda, T. Wolf, A. E. Bohmer, F. Hardy, C. Meingast, H. v. Löhneysen, and S. Uji
  • Journal Title: Journal of the Physical Society of Japan Volume: 84 Pages: 063701
  • DOI: http://dx.doi.org/10.7566/JPSJ.84.063701
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] A Quantum Critical Point Lying beneath the Superconducting Dome in Iron Pnictides (2016)
  • Author(s): 松田祐司
  • Organizer: 日本物理学会 2016年年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-19 – 2016-03-22
  • Invited
• [Presentation] BCS-BECクロスオーバー (2016)
  • Author(s): 笠原成
  • Organizer: 日本物理学会 2016年年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-19 – 2016-03-22
  • Invited
• [Presentation] STM/STSで見たFeSeの超伝導状態とネマティック状態 (2016)
  • Author(s): 花栗哲郎
  • Organizer: 日本物理学会 2016年年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-19 – 2016-03-22
  • Invited
• [Presentation] Colossal thermomagnetic response in chiral d-wave superconductor URu2Si2 (2016)
  • Author(s): Yuji Matsuda
  • Organizer: APS March meeting 2016
  • Place of Presentation: ボルチモア（アメリカ）
  • Year and Date: 2016-03-14 – 2016-03-18
  • Int'l Joint Research / Invited
• [Presentation] BCS-BEC crossover physics in FeSe bulk superconductor (2016)
  • Author(s): Takasada Shibauchi
  • Organizer: APS March meeting 2016
  • Place of Presentation: ボルチモア（アメリカ）
  • Year and Date: 2016-03-14 – 2016-03-18
  • Int'l Joint Research / Invited
• [Presentation] BCS-BEC crossover of FeSe (2016)
  • Author(s): Yuji Matsuda
  • Organizer: International Workshop to Celebrate the 60th Birthday of Prof. Gianni Blatter
  • Place of Presentation: エンゲルベルク（スイス）
  • Year and Date: 2016-02-10 – 2016-02-11
  • Int'l Joint Research / Invited
• [Presentation] STM/STS による量子物質の電子状態解析 (2015)
  • Author(s): 花栗哲郎
  • Organizer: 物性研短期研究会「量子物質研究の最前線」
  • Place of Presentation: 東京大学物性研究所（千葉県柏市）
  • Year and Date: 2015-12-08 – 2015-12-09
  • Invited
• [Presentation] Magnetic-field effects on Dirac electrons at the surfaces of topological insulators (2015)
  • Author(s): Tetsuo Hanaguri
  • Organizer: The 15th International Conference on the Formation of Semiconductor Interfaces (ICFSI-15)
  • Place of Presentation: 広島国際会議場（広島県広島市）
  • Year and Date: 2015-11-15 – 2015-11-20
  • Int'l Joint Research / Invited
• [Presentation] Recent developments in the physics of iron-based superconductivity (2015)
  • Author(s): Takasada Shibauchi
  • Organizer: 14th International Union of Materials Research Societies-International Conference on Advanced Materials (IUMRS-ICAM 2015)
  • Place of Presentation: チェジュ（韓国）
  • Year and Date: 2015-10-25 – 2015-10-28
  • Int'l Joint Research / Invited
• [Presentation] BCS-BEC crossover and Dirac electrons in FeSe (2015)
  • Author(s): Yuji Matsuda
  • Organizer: International Symposium on Frontier of Superconductivity Research
  • Place of Presentation: 北京（中国）
  • Year and Date: 2015-10-22 – 2015-10-26
  • Int'l Joint Research / Invited
• [Presentation] Quasiparticle interference and superconducting gap in the nodal iron-based superconductor FeSe (2015)
  • Author(s): Tetsuo Hanaguri
  • Organizer: Impurity induced states and quasiparticle interference in unconventional superconductors and strong spin-orbit coupled systems
  • Place of Presentation: ポハン（韓国）
  • Year and Date: 2015-10-18 – 2015-10-23
  • Int'l Joint Research / Invited
• [Presentation] URu2Si2のカイラル超伝導と巨大ネルンスト効果 (2015)
  • Author(s): 松田祐司
  • Organizer: 日本物理学会 2015年秋季大会
  • Place of Presentation: 関西大学（大阪府吹田市）
  • Year and Date: 2015-09-16 – 2015-09-19
  • Invited
• [Presentation] Electronic structure and giant superconducting fluctuations in FeSe (2015)
  • Author(s): Shigeru Kasahara
  • Organizer: Workshop on the two-dimensional chalcogenides: exotic electronic orders, superconductivity and magnetism
  • Place of Presentation: ドレスデン（ドイツ）
  • Year and Date: 2015-08-31 – 2015-09-03
  • Int'l Joint Research / Invited
• [Presentation] Friedel oscillations in the normal and superconducting states of FeSe (2015)
  • Author(s): Tetsuo Hanaguri
  • Organizer: Workshop on the two-dimensional chalcogenides: exotic electronic orders, superconductivity and magnetism
  • Place of Presentation: ドレスデン（ドイツ）
  • Year and Date: 2015-08-31 – 2015-09-03
  • Int'l Joint Research / Invited
• [Presentation] Two-dimensional Kondo Superlattices (2015)
  • Author(s): Yuji Matsuda
  • Organizer: The 11th International Conference on Materials & Mechanisms of Superconductivity (M2S)
  • Place of Presentation: ジュネーブ（スイス）
  • Year and Date: 2015-08-23 – 2015-08-28
  • Int'l Joint Research / Invited
• [Presentation] Fermi surface in FeSe: Quantum oscillation measurements (2015)
  • Author(s): Shigeru Kasahara
  • Organizer: The 11th International Conference on Materials & Mechanisms of Superconductivity (M2S)
  • Place of Presentation: ジュネーブ（スイス）
  • Year and Date: 2015-08-23 – 2015-08-28
  • Int'l Joint Research
• [Presentation] Hidden order and colossal thermomagnetic response in chiral d-wave superconductor URu2Si2 (2015)
  • Author(s): Yuji Matsuda
  • Organizer: Aspen Center for Physics, SUMMER 2015, “Beyond Quasiparticles: New Paradigms for Quantum Fluids”
  • Place of Presentation: アスペン（アメリカ）
  • Year and Date: 2015-08-17 – 2015-08-21
  • Int'l Joint Research / Invited
• [Presentation] Exotic superconductivity in FeSe with small Fermi energy (2015)
  • Author(s): Takasada Shibauchi
  • Organizer: Workshop on Strongly Correlated Electronic Systems - Novel Materials and Novel Theories
  • Place of Presentation: トリエステ（イタリア）
  • Year and Date: 2015-08-17 – 2015-08-21
  • Int'l Joint Research / Invited
• [Presentation] Colossal thermomagnetic response in chiral d-wave superconductor URu2Si2 (2015)
  • Author(s): Yuji Matsuda
  • Organizer: International Seminar and Workshop on “Quantum Design”
  • Place of Presentation: ドレスデン（ドイツ）
  • Year and Date: 2015-07-13 – 2015-07-17
  • Int'l Joint Research / Invited
• [Presentation] Electronic structure and the physics of the BCS-BEC crossover in FeSe (2015)
  • Author(s): Shigeru Kasahara
  • Organizer: Energy Materials Nanotechnology (EMN) Workshop on Iron and Iridium based Superconductivity
  • Place of Presentation: 青島（中国）
  • Year and Date: 2015-06-14 – 2015-06-16
  • Int'l Joint Research / Invited
• [Presentation] BCS-BEC Crossover Physics in Iron-Based Superconductors (2015)
  • Author(s): Takasada Shibauchi
  • Organizer: Superstripes 2015 Conference on Quantum in Complex Matter: Superconductivity, Magnetism and Ferroelectricity
  • Place of Presentation: イスキア（イタリア）
  • Year and Date: 2015-06-13 – 2015-06-18
  • Int'l Joint Research / Invited
• [Presentation] Imaging the wave functions of Dirac-Landau levels in the topological surface state (2015)
  • Author(s): Tetsuo Hanaguri
  • Organizer: Symposium of New Perspectives in Spintronic and Mesoscopic Physics
  • Place of Presentation: 東京大学物性研究所（千葉県柏市）
  • Year and Date: 2015-06-10 – 2015-06-12
  • Int'l Joint Research / Invited
• [Presentation] FeSe1-xSxにおける電子構造と超伝導 (2015)
  • Author(s): 芝内孝禎
  • Organizer: 京都大学基礎物理学研究所研究会「多自由度と相関効果が生み出す超伝導の新潮流 ～BCSからBECまで～」
  • Place of Presentation: 京都大学基礎物理学研究所（京都府京都市）
  • Year and Date: 2015-06-09 – 2015-06-10
  • Invited
• [Presentation] BCS-BEC Crossover in FeSe (2015)
  • Author(s): Yuji Matsuda
  • Organizer: Gordon Research Conference on “Unconventional Superconductivity: Materials and Mechanisms”
  • Place of Presentation: 香港（中国）
  • Year and Date: 2015-05-24 – 2015-05-29
  • Int'l Joint Research / Invited
• [Presentation] Pairing Symmetry and Quantum Criticality in BaFe2(As,P)2 (2015)
  • Author(s): Takasada Shibauchi
  • Organizer: Gordon Research Conference on “Unconventional Superconductivity: Materials and Mechanisms”
  • Place of Presentation: 香港（中国）
  • Year and Date: 2015-05-24 – 2015-05-29
  • Int'l Joint Research / Invited
• [Presentation] Quasi-Particle Interference and Superconducting Gap in FeSe (2015)
  • Author(s): Tetsuo Hanaguri
  • Organizer: Gordon Research Conference on “Unconventional Superconductivity: Materials and Mechanisms”
  • Place of Presentation: 香港（中国）
  • Year and Date: 2015-05-24 – 2015-05-29
  • Int'l Joint Research / Invited
• [Presentation] Exotic Superconductivity of FeSe in the BCS-BEC Crossover Regime (2015)
  • Author(s): Takasada Shibauchi
  • Organizer: International Workshop on Vortex Matter in Superconductors
  • Place of Presentation: エル・エスコリアル（スペイン）
  • Year and Date: 2015-05-11 – 2015-05-15
  • Int'l Joint Research / Invited
• [Presentation] Spectroscopic-Imaging STM studies of Vortices in FeSe (2015)
  • Author(s): Tetsuo Hanaguri
  • Organizer: International Workshop on Vortex Matter in Superconductors
  • Place of Presentation: エル・エスコリアル（スペイン）
  • Year and Date: 2015-05-11 – 2015-05-15
  • Int'l Joint Research / Invited
• [Presentation] BCS-BEC Crossover Physics in Iron-Based Superconductors (2015)
  • Author(s): Takasada Shibauchi
  • Organizer: Oxford Symposium on Quantum Materials
  • Place of Presentation: オックスフォード（イギリス）
  • Year and Date: 2015-05-01
  • Int'l Joint Research / Invited
• [Presentation] Hidden Order and Exotic Superconductivity in URu2Si2 (2015)
  • Author(s): Takasada Shibauchi
  • Organizer: International Workshop on Heavy Fermions and Quantum Phase Transitions
  • Place of Presentation: 杭州（中国）
  • Year and Date: 2015-04-15 – 2015-04-17
  • Int'l Joint Research / Invited
• [Presentation] Physics of iron-based high temperature superconductors (2015)
  • Author(s): Yuji Matsuda
  • Organizer: 2015 Joint UK-Japan Workshop on Physics and Applications of Superconductivity
  • Place of Presentation: ケンブリッジ（イギリス）
  • Year and Date: 2015-04-12 – 2015-04-15
  • Int'l Joint Research / Invited
• [Remarks] 京都大学 量子凝縮物性研究室
  • URL: http://kotai2.scphys.kyoto-u.ac.jp/