Development and Application of Direct Fermi-Surface Mapping Method for Strongly Correlated Materials

2009 Fiscal Year Final Research Report

• Project/Area Number: 18340111
• 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: Japan Synchrotron Radiation Research Institute
• Principal Investigator: SAKURAI Yoshiharu Japan Synchrotron Radiation Research Institute, 利用研究促進部門, 副主席研究員 (90205815)
• Co-Investigator(Kenkyū-buntansha): ITOU Masayoshi (財)高輝度光科学研究センター, 利用研究促進部門, 副主幹研究員 (10344392)
• Co-Investigator(Renkei-kenkyūsha): KOIZUMI Akihisa 兵庫県立大学, 物質理学研究科, 准教授 (00244682) ; YAMAGUCHI Masuhiro 横浜国立大学, 工学研究科, 教授 (10018046) ; KUBO Yasunori 日本大学, 文理学部, 教授 (60117497)
• Project Period (FY): 2006 – 2009
• Keywords: 金属物性 / 構造・機能材料 / 超伝導材料・素子 / 物性実験 / 放射線・X線・粒子線

Research Abstract

Fermi surface plays an important role on superconductivity and magnetism in strongly correlated materials which draws attention as next-generation materials for electronic devices. In this study, we have developed the Compton scattering technique as a direct observation method of Fermi surfaces and then applied to novel superconductors. We measured cobaltates, Fe-As materials and cuprates, and succeeded in mapping out the Fermi surfaces and orbitals of carriers (holes or electrons) which play an important role in the occurrence of superconductivity.

Research Products

• [Journal Article] Bulk electronic structure of optimally doped Ba(Fe1-xCox)2As2 (2010)
  • Author(s): C. Utfeld, J. Laverock, T.D. Haynes, S.B. Dugdale, J.A. Duffy, M.W. Butchers, J.W. Taylor, S.R. Giblin, J.G. Analytis, J.-H. Chu, I.R. Fisher, M. Itou, Y. Sakurai
  • Journal Title: Phys. Rev. B 81 Pages: 064509
  • Peer Reviewed
• [Journal Article] Role of Oxygen Electrons in the metal-insulator transition in the magnetoresistive oxide La2-2xSr1+2xMn2O7 probed by Compton scattering (2009)
  • Author(s): B. Barbiellini, A. Koizumi, P.E. Mijnarends, W. Al-Sawai, H. Lin, T. Nagao, K. Hirota, M. Itou, Y. Sakurai, A. Bansil
  • Journal Title: Phys. Rev. Lett 102 Pages: 206402
  • Peer Reviewed
• [Journal Article] Elliptic hole pockets in the Fermi surface of unhydrated and hydrated sodium cobalt oxides (2007)
  • Author(s): J. Laverock, S.B. Dugdale, J.A. Duffy, J. Wooldridge, G. Balakrishnan, M.R. Lees, G.-q. Zheng, D. Chen, C.T. Lin, A. Andrejczuk, M. Itou, Y. Sakurai
  • Journal Title: Phys. Rev. B 76 Pages: 052509
  • Peer Reviewed
• [Journal Article] Electron Momentum Density in the Low-Dimensional Layered System ZrTe3 (2007)
  • Author(s): Y. Kubo, Y. Sakurai, M. Itou, A. Koizumi, K. Yamaya, Y. Uwatoko
  • Journal Title: J. Phys. Soc. Jpn 76 Pages: 064711
  • Peer Reviewed
• [Presentation] Spin and momentum density studies by synchrotron-based Compton scattering (2009)
  • Author(s): Y. Sakurai
  • Organizer: NSRP-18
  • Place of Presentation: M.L. Sukhadia Univ., Udaipur, India
  • Year and Date: 2009-11-20
• [Presentation] La2-xSrxCuO4におけるk空間電子占有数密度とフェルミ面 (2009)
  • Author(s): 櫻井吉晴、伊藤真義、山田和芳、P.E.Mijnarends, B.Barbiellini, A.Bansil
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-26
• [Presentation] An Overview of the Latest Spin and Momentum Density Studies on Hard Condensed Matter (2009)
  • Author(s): Y. Sakurai
  • Organizer: SAGAMORE XVI
  • Place of Presentation: Santa Fe, USA
  • Year and Date: 2009-08-04
• [Presentation] La2-xSrxCuO4におけるホール軌道とフェルミ面:コンプトン散乱IV (2009)
  • Author(s): 櫻井吉晴、伊藤真義、山田和芳、J. -M. Gillet, B. Barbiellini, P.E. Mijnarends, S. Kaprzyk, R.S. Markiewicz, A. Bansil
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] K空間における電子占有数密度とフェルミ・アーク:コンプトン散乱によるLa2-xSrxCuO4の研究 (2009)
  • Author(s): 櫻井吉晴、伊藤真義、山田和芳、J. -M. Gillet, B. Barbiellini, P.E. Mijnarends, S. Kaprzyk, R.S. Markiewicz, A. Bansil
  • Organizer: 第22回日本放射光学会年会・放射光科学合同シンポジウ
  • Place of Presentation: 東京大学
  • Year and Date: 2009-01-11
• [Presentation] Compton Scattering as a Probe of Fermiology and its Application to Ruthenates, Cobaltates and Cuprates (2008)
  • Author(s): Y. Sakurai
  • Organizer: International Workshop on Inelastic Neutron and X-ray Scattering in Strongly Correlated Electron Systems
  • Place of Presentation: 東北大学
  • Year and Date: 2008-10-01
• [Presentation] La2-xSrxCuO4におけるホール軌道とフェルミ面:コンプトン散乱III (2008)
  • Author(s): 櫻井吉晴、伊藤真義、山田和芳、J. -M. Gillet, B. Barbiellini, P.E. Mijnarends, S. Kaprzyk, R.S. Markiewicz, A. Bansil
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-20
• [Presentation] La2-xSrxCuO4におけるホール軌道とフェルミ面:コンプトン散乱II (2008)
  • Author(s): 櫻井吉晴、伊藤真義、山田和芳、J. -M. Gillet, B. Barbiellini, P.E. Mijnarends, S. Kaprzyk, R.S. Markiewicz, A. Bansil
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] La2-xSrxCuO4におけるホール軌道とフェルミ面:コンプトン散乱 (2007)
  • Author(s): 櫻井吉晴、伊藤真義、J. -M. Gillet, A. Bansil, 山田和芳
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-03-22