Physical properties of heavy Fermion superconductors investigated by fabrication of artificial superlattices

2008 Fiscal Year Final Research Report

• Project/Area Number: 18340100
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kyoto University
• Principal Investigator: SHIBAUCHI Takasada Kyoto University, 大学院・理学研究科, 准教授 (00251356)
• Co-Investigator(Kenkyū-buntansha): TERASHIMA Takahito 京都大学, 低温物質科学研究センター, 教授 (40252506)
• Project Period (FY): 2006 – 2008
• Keywords: f電子系 / 次元性制御 / 電子相関 / 量子臨界点 / 反強磁性 / 非フェルミ液体 / 異方的超伝導

Research Abstract

本研究では、希土類元素Ceを含む重い電子系化合物の薄膜化技術を確立し、CeCoIn5超伝導体のc軸配向薄膜、CeIn3反強磁性体のエピタキシャル薄膜、およびCeIn3とLaIn3のエピタキシャル人工超格子の作製に成功した.Ce系重い電子系のエピタキシャル薄膜作製は世界初の成果である.さらに人工超格子の作製により、重い電子系の次元性を制御することが可能になり、低次元化による反強磁性の抑制とそれに伴う非フェルミ液体的物性の発現の観測に成功した.今後2次元の重い電子系における新しい物理学の展望が期待できる.

Research Products

• [Journal Article] Microwave Surface-Impedance Measurements of the Magnetic Penetration Depth in Single Crystal Ba_<1-x>K_xFe_2As_2 Superconductors : Evidence for a Disorder-Dependent Superfluid Density (2009)
  • Author(s): K. Hashimoto, T. Shibauchi, S. Kasahara, K. Ikada, S. Tonegawa, T. Kato, R. Okazaki, C. J. van der Beek, M. Konczykowski, H. Takeya, K. Hirata, T. Terashima and Y. Matsuda
  • Journal Title: Phys. Rev. Lett. 102
  • Peer Reviewed
• [Journal Article] Possible Phase Transition Deep Inside the Hidden Order Phase of Ultraclean URu_2Si_2 (2009)
  • Author(s): Shibauchi, T. Sasaki, H. Oizumi, N. Kobayashi, T. Takamasu, K. Takenaka, Y. Imanaka, T. D. Matsuda, Y. Haga, Y. Onuki and Y. Matsuda
  • Journal Title: Phys. Rev. Lett 102
  • Peer Reviewed
• [Journal Article] Lower Critical Fields of Superconducting PrFeAsO_<1-y> Single Crystals (2009)
  • Author(s): R. Okazaki, M. Konczykowski, C. J. van der Beek, T. Kato, K. Hashimoto, M. Shimozawa, H. Shishido, M. Yamashita, M. Ishikado, H. Kito, A. Iyo, H. Eisaki, S. Shamoto, T. Shibauchi, and Y. Matsuda
  • Journal Title: Phys. Rev. B 79 Pages: 064520
  • Peer Reviewed
• [Journal Article] Microwave Penetration Depth and Quasiparticle Conductivity of PrFeAsO_<1-y> Single Crystals : Evidence for a Full-Gap Superconductor (2009)
  • Author(s): K. Hashimoto, T. Shibauchi, T. Kato, K. Ikada, R. Okazaki, H. Shishido, M. Ishikado, H. Kito, A. Iyo, H. Eisaki, S. Shamoto and Y. Matsuda
  • Journal Title: Phys. Rev. Lett 102 Pages: 017002
  • Peer Reviewed
• [Journal Article] Thermal-Transport Measurements in a Quantum Spin-Liquid State of the Frustrated Triangular Magnet k-(BEDT-TTF)_2Cu_2(CN)_3 (2009)
  • Author(s): M. Yamashita, N. Nakata, Y. Kasahara, T. Sasaki, N. Yoneyama, N. Kobayashi, S. Fujimoto, T. Shibauchi and Y. Matsuda
  • Journal Title: Nature Phys 44-47
  • Peer Reviewed
• [Journal Article] Entanglement of Solid Vortex Matter : A Boomerang Shaped Reduction Forced by Disorder in Interlayer Phase Coherence in Bi_2Sr_2CaCu_2O_<8+y> (2008)
  • Author(s): T. Kato, T. Shibauchi, Y. Matsuda, J. R. Thompson and L. Krusin-Elbaum
  • Journal Title: Phys. Rev. Lett 101 Pages: 027003
  • Peer Reviewed
• [Journal Article] Magneto-Transport Properties Governed by Antiferromagnetic Fluctuations in the Heavy Fermion Superconductor CeIrIn_5 (2008)
  • Author(s): Y. Nakajima, H. Shishido, H. Nakai, T. Shibauchi, M. Hedo, Y. Uwatoko, T. Matsumoto, R. Settai, Y. Onuki, H. Kontani and Y. Matsuda
  • Journal Title: Phys. Rev. B 77 Pages: 214504
  • Peer Reviewed
• [Journal Article] Thermal Conductivity Evidence for a dx^2-y^2 Pairing Symmetry in the Heavy-Fermion CeIrIn_5 Superconductor (2008)
  • Author(s): Y. Kasahara, T. Iwasawa, Y. Shimizu, H. Shishido, T. Shibauchi, I. Vekhter and Y. Matsuda
  • Journal Title: Phys. Rev. Lett 100
  • Peer Reviewed
• [Journal Article] Field-Induced Quantum Critical Route to a Fermi Liquid in High-Temperature Superconductors (2008)
  • Author(s): T. Shibauchi, L. Krusin-Elbaum, M. Hasegawa, Y. Kasahara, R. Okazaki and Y. Matsuda
  • Journal Title: Proc. Natl. Acad. Sci. USA 105 7120-7123
  • Peer Reviewed
• [Journal Article] Kes, c-Axis Coupling in Underdoped Bi_2Sr_2CaCu_2O_<8+d> with Varying Degrees of Disorder (2008)
  • Author(s): P. Spathis, S. Colson, C. J. van der Beek, P. Gierlowski, T. Shibauchi, Y. Matsuda, M. Gaifullin and M. Li, P. H
  • Journal Title: Phys. Rev. B 77 Pages: Phys. Rev. B
  • Peer Reviewed
• [Journal Article] Anomalous Flux Line Lattice in CeCoIn_5 (2008)
  • Author(s): Kawano-Furukawa, B. Lake, A. Wiedenmann, K. Kiefer, T. Shibauchi and Y. Matsuda
  • Journal Title: J. Phys. Soc. Jpn 77 Pages: 023702
  • Peer Reviewed
• [Journal Article] Flux Line Lattice Melting and the Formation of a Coherent Quasiparticle Bloch State in the Ultraclean URu_2Si_2 Superconductor (2008)
  • Author(s): R. Okazaki, Y. Kasahara, H. Shishido, M. Konczykowski, K. Behnia, Y. Haga, T. D. Matsuda, Y. Onuki, T. Shibauchi and Y. Matsuda
  • Journal Title: Phys. Rev. Lett 100 Pages: 037004
  • Peer Reviewed
• [Journal Article] High Field Superconducting Transition of CeCoIn_5 Studied by Local Magnetic Induction Measurements (2007)
  • Author(s): R. Okazaki, H. Shishido, T. Shibauchi, M. Konczykowski, A. Buzdin and Y. Matsuda
  • Journal Title: Phys. Rev. B 76 Pages: 224529
  • Peer Reviewed
• [Journal Article] Vortex Redistribution below the First-Order Transition Tmperature in the b-Pyrochlore Superconductor Ko_2O_6 (2007)
  • Author(s): T. Shibauchi, M. Konczykowski, C. J. van der Beek, R. Okazaki, Y. Matsuda, J. Yamaura, Y. Nagao and Z. Hiroi
  • Journal Title: Phys. Rev. Lett 99 Pages: 257001
  • Peer Reviewed
• [Journal Article] FFLO State in Thin Superconducting Films (2007)
  • Author(s): A. Buzdin, Y. Matsuda and T. Shibauchi
  • Journal Title: Europhys. Lett 80 Pages: 67004
  • Peer Reviewed
• [Journal Article] Competition between Unconventional Superconductivity and Incommensulate Antiferromagnetic Order in CeRh_<1-x>Co_xIn_5 (2007)
  • Author(s): S. Ohira-Kawamura, H. Shishido, A.Yoshida, R. Okazaki, H. Kawano-Furukawa, T. Shibauchi, H. Harima and Y. Matsuda
  • Journal Title: Phys. Rev. B 76 Pages: 0132507
  • Peer Reviewed
• [Journal Article] Superconducting Thin Films of Heavy Fermion Compound CeCoIn_5 Prepared by Molecular Beam Epitaxy (2007)
  • Author(s): M. Izaki, H. Shishido, T. Kato, T. Shibauchi, Y. Matsuda and T. Terashima
  • Journal Title: Appl. Phys. Lett 91 Pages: 122507
  • Peer Reviewed
• [Journal Article] Exotic Superconducting Properties in the Electron-Hole Compensated Heavy Ferimon Semimetal' Uru_2Si_2 (2007)
  • Author(s): Y. Kasahara, T. Iwasawa, H. Shishido, T. Shibauchi, K. Behnia, Y. Haga, T. D. Matsuda, Y. Onuki, M. Sigrist and Y. Matsuda
  • Journal Title: Phys. Rev. Lett 99 Pages: 116402
  • Peer Reviewed
• [Journal Article] Effects of Rattling Phonons on the Dynamics of Quasiperticle Excitation in the b-Pyrochlore Kos_2O_6 Superconductor (2007)
  • Author(s): Y. Shimono, T. Shibauchi, Y. Kasahara, T. Kato, K. Hashimoto, Y. Matsuda, J. Yamaura, Y. Nagao and Z. Hiroi
  • Journal Title: Phys. Rev. Lett 98 Pages: 257004
  • Peer Reviewed
• [Journal Article] Non-Fermi Liquid Behavior in the Magnetotransport of CeMIn5 (M: Co and Rh) : Striking Similarity between Quasi Two-Dimensional Heavy Fermion and High-Tc Cuprates (2007)
  • Author(s): Y. Nakajima, H. Shishido, H. Nakai, T. Shibauchi, K. Behnia, K. Izawa, M. Hedo, Y. Uwatoko, T. Matsumoto, R. Settai, Y. Onuki, H. Kontani and Y. Matsuda
  • Journal Title: J. Phys. Soc. Jpn 76 Pages: 024703
  • Peer Reviewed
• [Presentation] 重い電子系人工超格子をもちいた次元性制御による量子臨界点の実現 (2009)
  • Author(s): 安一樹, 宍戸寛明, 加藤智成, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大
  • Year and Date: 2009-03-27
• [Presentation] HeavyFermions in Flatland, 新学術領域研究重い電子系の形成と秩序化 (2009)
  • Author(s): 芝内孝禎
  • Organizer: 第1回研究会
  • Place of Presentation: 東京大学柏図書館メディアホール
  • Year and Date: 2009-03-11
• [Presentation] HeavyFermions in Flatland (2009)
  • Author(s): T. Shibauchi
  • Organizer: Workshop on Functional Materials by Desi
  • Place of Presentation: Los Alamos National Laboratory (NM, USA)(招待講演)
  • Year and Date: 2009-01-20
• [Presentation] 人工超格子による重い電子系の次元性制御I (2008)
  • Author(s): 安一樹, 加藤智成, 宍戸寛明, 二井瑛典, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大
  • Year and Date: 2008-09-22
• [Presentation] 人工超格子による重い電子系の次元性制御II (2008)
  • Author(s): 加藤智成, 安一樹, 宍戸寛明, 二井瑛典, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大
  • Year and Date: 2008-09-22
• [Presentation] Pinning Down the Pairing Symmetry of Heavy-Fermion Compound CeIrIn_5 (2008)
  • Author(s): Y. Kasahara, T. Iwasawa, Y. Shimizu, H. Shishido, T. Shibauchi, I. Vekhter and Y. Matsuda
  • Organizer: 25th International Conference on Low Temperature Physics (LT25)
  • Place of Presentation: アムステルダム(オランダ)
  • Year and Date: 2008-08-10
• [Presentation] CeIrIn5の超伝導対称性 (2008)
  • Author(s): 笠原裕一, 岩澤卓矢, 清水悠晴, 宍戸寛明, 芝内孝禎, 松田祐司, 摂待力生, 大貫惇睦
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大
  • Year and Date: 2008-03-24
• [Presentation] CeIn_3人工超格子における次元性制御による反強磁性の抑制と重い電子状態 (2008)
  • Author(s): 宍戸寛明, 加藤智成, 井崎学, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大
  • Year and Date: 2008-03-23
• [Presentation] 2次元heavy fermion : 分子線エピタクシー法によるf電子系人工超格子の作製と評価 I (2007)
  • Author(s): 宍戸寛明, 加藤智成, 井崎学, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大
  • Year and Date: 2007-09-22
• [Presentation] 2次元heavy fermion : 分子線エピタクシー法によるf電子系人工超格子の作製と評価 II (2007)
  • Author(s): 加藤智成, 宍戸寛明, 井崎学, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大
  • Year and Date: 2007-09-22
• [Presentation] 中性子小角散乱法を用いたCeCoIn_5における磁束格子構造の研究 (2007)
  • Author(s): 河村聖子, 宍戸寛明, 古川はづき, 芝内孝禎, 松田祐司, B. Lake, A. Wiedenmann
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大
  • Year and Date: 2007-09-22
• [Presentation] CeIrIn_5の磁場中熱伝導率の異方性と超伝導ギャップ構造 (2007)
  • Author(s): 清水悠晴, 岩澤卓矢, 笠原裕一, 宍戸寛明, 芝内孝禎, 松田祐司, 摂待力生, 大貫惇睦
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大
  • Year and Date: 2007-09-22
• [Presentation] Non-Fermi Liquid Behavior in the Magnetotransport of Quasi Two-Dimensional Heavy Fermion Compounds CeMIn_5 (2007)
  • Author(s): Y. Nakajima, T. Shibauchi, H. Shishido H. Nakai, K. Behnia, K. Izawa, M. Hedo, Y. Uwatoko, T. Matsumoto, R. Settai, Y. Onuki, H. Kontani, and Y. Matsuda
  • Organizer: The 8th International Conference on Spectroscopies in Novel Superconductors (SNS2007)
  • Place of Presentation: 仙台
  • Year and Date: 2007-08-22
• [Presentation] CeCoIn_5の平行磁場下における局所磁化測定 (2007)
  • Author(s): 岡崎竜二, 宍戸寛明, 芝内孝禎, 松田祐司, Marcin. Konczykowski, 摂待力生, 大貫惇睦
  • Organizer: 日本物理学会2007年春季大会
  • Place of Presentation: 首都大
  • Year and Date: 2007-03-20
• [Presentation] 熱伝導率から見たCeIrIn_5の超伝導ギャップ構造 (2007)
  • Author(s): 岩澤卓矢, 笠原裕一, 宍戸寛明, 井澤公一, 芝内孝禎, 松田祐司, 摂待力生, 大貫惇睦
  • Organizer: 日本物理学会2007年春季大会
  • Place of Presentation: 首都大
  • Year and Date: 2007-03-20
• [Presentation] 中性子散乱で見たCe(Rh, Co)In_5の磁性と超伝導への寄与 (2007)
  • Author(s): 河村聖子, 吉田暁海理, 古川はづき, 宍戸寛明, 松田祐司, 芝内孝禎, 摂待力生, 大貫惇睦
  • Organizer: 日本物理学会2007年春季大会
  • Place of Presentation: 首都大
  • Year and Date: 2007-03-20
• [Presentation] CeRh_<1-x>Co_xIn_5のHall効果測定 (2007)
  • Author(s): 宍戸寛明, 岡崎竜二, 福浦大志, 芝内孝禎, 松田祐司, 摂待力生, 大貫惇睦
  • Organizer: 日本物理学会2007年春季大会
  • Place of Presentation: 首都大
  • Year and Date: 2007-03-20
• [Presentation] 重い電子系化合物CeMIn_5(M=Co, Rh)の高圧下磁気抵抗 (2006)
  • Author(s): 仲島康行, 宍戸寛明, 中井秀和, 芝内孝禎, 松田祐司, 井澤公一, 辺土正人, 上床美也, 松本武彦, 摂待力生, 大貫惇睦, 紺谷浩
  • Organizer: 日本物理学会2006年秋季大会
  • Place of Presentation: 千葉大
  • Year and Date: 2006-09-24
• [Presentation] CeCoIn_5の超伝導状態における微小ホール素子による局所磁化測定 (2006)
  • Author(s): 宍戸寛明, 岡崎竜二, 芝内孝禎, 松田祐司, Marcin Konczykowski, 摂待力生, 大貫惇睦
  • Organizer: 日本物理学会2006年秋季大会
  • Place of Presentation: 千葉大
  • Year and Date: 2006-09-24
• [Presentation] CeCoIn_5超伝導薄膜の作製 (2006)
  • Author(s): 井崎学, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会2006年秋季大会
  • Place of Presentation: 千葉大
  • Year and Date: 2006-09-24