Novel superconducting state of heavy fermion compounds

2012 Fiscal Year Final Research Report

• Project/Area Number: 20224008
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Kyoto University
• Principal Investigator: MATSUDA Yuji 京都大学, 大学院・理学研究科, 教授 (50199816)
• Co-Investigator(Kenkyū-buntansha): ISHIDA Kenji 京都大学, 大学院・理学研究科, 教授 (90243196) ; SHIBAUCHI Takasada 京都大学, 大学院・理学研究科, 准教授 (00251356) ; TERASHIMA Takahito 京都大学, 低温物質科学研究センター, 教授 (40252506)
• Project Period (FY): 2008 – 2012
• Keywords: 強相関系

Research Abstract

We have succeeded a two dimensional confinement of heavy fermion by using molecular bean epitaxy technique. We fabricate superlattices of CeIn3/LaIn3 and CeCoIn5/YbCoIn5. In the former, we have succeeded a dimensional tuning of the quantumcriticality. In the latter, we found that two dimensional heavy fermion exhibit highly unusual superconductivity.

Research Products

• [Journal Article] A sharp peak of the zero-temperature penetration depth at optimal composition in the iron-based superconductor BaFe2(As1-xPx)2 (2012)
  • Author(s): K. Hashimoto, K. Cho, T. Shibauchi, S. Kasahara, Y. Mizukami, R. Katsumata, Y. Tsuruhara, T. Terashima, H. Ikeda, M. A. Tanatar, H. Kitano, N. Salovich, R. W. Giannetta, P. Walmsley, A. Carrington, R. Prozorov, and Y. Matsuda
  • Journal Title: Science Volume: 336 Pages: 1554-1557
  • DOI: DOI:10.1126/science.1219821
  • Peer Reviewed
• [Journal Article] Electronic nematicity above the structural and superconducting transition in BaFe2(As1-xPx)2 (2012)
  • Author(s): S. Kasahara, H. J. Shi, K. Hashimoto, S. Tonegawa, Y. Mizukami, T. Shibauchi, K. Sugimoto, T. Fukuda, T. Terashima, A. H. Nevidomskyy, and Y. Matsuda
  • Journal Title: Nature Volume: 486 Pages: 382-385
  • DOI: DOI:10.1038/nature11178
  • Peer Reviewed
• [Journal Article] "Emergent Rank-5 `Nematic' Order in URu2Si2 (2012)
  • Author(s): H. Ikeda, M.-T. Suzuki, R. Arita, T. Takimoto, T. Shibauchi, and Y. Matsuda
  • Journal Title: Nature Physics Volume: 8 Pages: 528-533
  • DOI: DOI:10.1038/nphys2330
  • Peer Reviewed
• [Journal Article] Extremely strong-coupling superconductivity in artificial two-dimensional Kondo lattices (2011)
  • Author(s): Y. Mizukami, H. Shishido, T. Shibauchi, M. Shimozawa, S. Yasumoto, D. Watanabe, M. Yamashita, H. Ikeda, T. Terashima, H. Kontani, and Y. Matsuda
  • Journal Title: Nature Physics Volume: 7 Pages: 849-853
  • DOI: DOI:10.1038/nphys2112
  • Peer Reviewed
• [Journal Article] Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2 (2011)
  • Author(s): R. Okazaki, T. Shibauchi, H. J. Shi, Y. Haga, T. D. Matsuda, E. Yamamoto, Y. Onuki, H. Ikeda, and Y. Matsuda
  • Journal Title: Science Volume: 331 Pages: 439-442
  • DOI: DOI:10.1126/science.1197358
  • Peer Reviewed
• [Journal Article] Highly Mobile Gapless Excitations in a Two-Dimensional Candidate Quantum Spin Liquid (2010)
  • Author(s): M. Yamashita, N. Nakata, Y. Senshu, M. Nagata, H. M. Yamamoto, R. Kato, T. Shibauchi, and Y. Matsuda
  • Journal Title: Science Volume: 328-1246 Pages: 1
  • DOI: DOI:10.1126/science.1188200
  • Peer Reviewed
• [Journal Article] Tuning the Dimensionality of the Heavy Fermion Compound CeIn3 (2010)
  • Author(s): H. Shishido, T. Shibauchi, K. Yasu, T. Kato, H. Kontani, T. Terashima, and Y. Matsuda
  • Journal Title: Science Volume: 327 Pages: 9820-983
  • DOI: DOI:10.1126/science.1183376
  • Peer Reviewed
• [Journal Article] M. Yamashita, N. Nakata, Y. Kasahara, T. Sasaki, N. Yoneyama, N. Kobayashi, S. Fujimoto, T. Shibauchi, and Y. Matsuda (2009)
  • Author(s): Thermal-transport measurements in a quantum spin-liquid state of the frustrated triangular magnet k-(BEDT-TTF)2Cu2(CN)3
  • Journal Title: Nature Physics Volume: 5 Pages: 44-47
  • DOI: DOI:10.1038/nphys1134
  • Peer Reviewed
• [Presentation] Quantum spin liquid (2013)
  • Author(s): Yuji Matsuda
  • Organizer: 3rdJapan-Israel Binational Workshop on Quantum Phenomena
  • Place of Presentation: 沖縄
  • Year and Date: 20130311-13
• [Presentation] Two dimensional confinement of heavy fermion in artificial superlattices (2013)
  • Author(s): Yuji Matsuda
  • Organizer: REIMEI-Workshop: Heavy Fermion Superconductivity explored by anisotropic magnetic fluctuations in actinide compounds
  • Place of Presentation: 東京
  • Year and Date: 20130218-19
• [Presentation] Superconducting gap structure (2013)
  • Author(s): Yuji Matsuda
  • Organizer: hidden quantum criticality and nematic transition in BaFe2(As1-xPx)2,Bristol-Kyoto Symposium
  • Place of Presentation: ブリストル(イギリス)
  • Year and Date: 20130109-13
• [Presentation] Novel Pauli paramagneticquantum phase in a Mott insulator (2012)
  • Author(s): Yuji Matsuda
  • Organizer: Exotic Phases of Frustrated Magnets Conference
  • Place of Presentation: サンタバーバラ(アメリカ)
  • Year and Date: 20121008-12
• [Presentation] Two dimensional confinement of heavy fermion in artificial superlattices (2012)
  • Author(s): Yuji Matsuda
  • Organizer: Materials and Mechanism of Superconductivity
  • Place of Presentation: ワシントンンDC(アメリカ)
  • Year and Date: 20120729-0803
• [Presentation] Nematic transition and quantum critical point in iron-pnictide superconductors (2012)
  • Author(s): Yuji Matsuda
  • Organizer: Japanese-German Symposium
  • Place of Presentation: 伊豆
  • Year and Date: 20120714-17
• [Presentation] Quantum criticality and electronic nematic phase in iron-pnictides (2012)
  • Author(s): Yuji Matsuda
  • Organizer: 19thInternational Conference on Magnetism with Strongly Correlated Electron Systems
  • Place of Presentation: プサン(韓国)
  • Year and Date: 20120708-13
• [Presentation] Novel Pauli-paramagnetic quantum phase in a Mott insulator (2012)
  • Author(s): Yuji Matsuda
  • Organizer: International Workshop Itinerant Spin-orbital Systems: from MagneticFrustration to Novel Superconductivity
  • Place of Presentation: ドレスデン(ドイツ)
  • Year and Date: 20120520-25
• [Presentation] Superconducting gap structure of iron-pnictide superconductors (2012)
  • Author(s): Yuji Matsuda
  • Organizer: International Conference on Superconductivity and Magnetism
  • Place of Presentation: イスタンブール(トルコ)
  • Year and Date: 20120429-0504
• [Book] 超伝導現象と高温超伝導 (2013)
  • Author(s): 松田祐司
  • Total Pages: 490-501
  • Publisher: NTS出版