Theory for the bulk sensitive hard x-ray photoemission spectroscopy on 3d transition metal compounds

2010 Fiscal Year Self-evaluation Report

• Project/Area Number: 20540324
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: The Institute of Physical and Chemical Research
• Principal Investigator: TAGUCHI Munetaka The Institute of Physical and Chemical Research, 励起秩序研究チーム, 研究員 (10415218)
• Project Period (FY): 2008 – 2012
• Keywords: 硬X線光電子分光 / 3d遷移金属化合物 / 配置間相互作用模型 / 金属絶縁体転移

Research Abstract

本研究では、金属・絶縁体相転移や価数相転移などを起こす強相関電子系の3d遷移金属化合物における硬X線を用いた内殻光電子分光スペクトルの理論的な解析、数値計算法の開発を行う。そして電荷秩序、軌道秩序、磁気秩序などに起因するフェルミ準位近傍の電子状態の変化とそれが内殻光電子スペクトルに与える影響、そしてその物理的機構についての知見を得ることを目的とする。

Research Products

• [Journal Article] Role of Ti 3d Carriers in Mediating the Ferromagnetism of Co : TiO_2 Anatase Thin Films (2011)
  • Author(s): T.Ohtsuki, A.Chainani, R.Eguchi, M.Matsunami, Y.Takata, M.Taguchi, Y.Nishino, K.Tamasaku, M.Yabashi, T.Ishikawa, M.Oura, Y.Senba, H.Ohashi, S.Shin
  • Journal Title: Physical Review Letters 106 Pages: 047602-1-"047602-4"
  • Peer Reviewed
• [Journal Article] Strong Evidence for a correlated insulator to antiferromagnetic metal transition in CrN (2010)
  • Author(s): P.A.Bhobe, A.Chainani, M.Taguchi, T.Takeuchi, R.Eguchi, M.Matsunami, K.Ishizaka, Y.Takata, M.Oura, Y.Senba, H.Ohashi, Y.Nishino, M.Yabashi, K.Tamasaku, T.Ishikawa, K.Takenaka, H.Takagi, S.Shin
  • Journal Title: Physical Review Letters 104 Pages: 236404-1-"236404-4"
  • Peer Reviewed
• [Journal Article] Anomalous State Sandwiched between Fermi Liquid and Charge Ordered Mott-Insulating Phases of Ti_4O_7 (2010)
  • Author(s): M.Taguchi, A.Chainani, M.Matsunami, R.Eguchi, Y.Takata, M.Yabashi, K.Tamasaku, Y.Nishino, T.Ishikawa, S.Tsuda, S.Watanabe, C.T.Chen, Y.Senba, H.Ohashi, K.Fujiwara, Y.Nakamura, H.Takagi, S.Shin
  • Journal Title: Physical Review Letters 104 Pages: 106401-1-"106401-4"
  • Peer Reviewed
• [Journal Article] Revising the Valence-Band and Core-Level Photoemission Spectra of NiO (2008)
  • Author(s): M.Taguchi, M.Matsunami, Y.Ishida, R.Eguchi, A.Chainani, Y.Takata, M.Yabashi, K.Tamasaku, Y.Nishino, T.Nishino, T.Ishikawa, Y.Senba, H.Ohashi, S.Shin
  • Journal Title: Physical Review Letters 100 Pages: 206401-1-"206401-4"
  • Peer Reviewed
• [Presentation] 温度によって三つの顔を見せるチタ酸化物の正体に迫る (2011)
  • Author(s): 田口宗孝
  • Organizer: RSC報奨金表彰受賞講演(SPring-8)
  • Place of Presentation: 日本
  • Year and Date: 2011-04-01
• [Presentation] 硬X線光電子分光によるFe_3O_4の電子状態 (2010)
  • Author(s): 田口宗孝
  • Organizer: 日本物理学会春季大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] Studies of the Electronic Structure of Strongly Correlated Materials by the Combination of HAXPES and Other Techniques (2009)
  • Author(s): 田口宗孝
  • Organizer: International Workshop for New Opportunities in Hard X-ray Photoelectron Spectroscopy : HAXPES 2009
  • Place of Presentation: National Synchrotron Light Source, New York, USA
  • Year and Date: 20090520-20090522
• [Presentation] 光電子分光によるフェルオロジー:熱力学物性は光電子分光でどの程度理解できるか? (2009)
  • Author(s): 田口宗孝
  • Organizer: 第22回日本方射光学会年会・方射光科学合同シンポジウム(「硬X線光電子分光による強相関物質の研究」)
  • Place of Presentation: 東京大学、本郷キャンパス(企画招待講演)
  • Year and Date: 20090109-20090112
• [Remarks] ホームページ
  • URL: http://www.riken.jp/lab/riken-sx/