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2008 Fiscal Year Final Research Report

Study of Precise Crystal Structure and Electronic State of Quantum Materials Phases by Synchrotron X-ray Diffraction

Research Project

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Project/Area Number 16076202
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionTohoku University

Principal Investigator

MURAKAMI Youichi  Tohoku University, 大学院理学研究科, 教授 (60190899)

Co-Investigator(Kenkyū-buntansha) SAWA Hiroshi  名古屋大学, 大学院工学研究科, 教授 (50215901)
MAEKAWA Sadamiti  東北大学, 金属材料研究所, 教授 (60005973)
Project Period (FY) 2004 – 2008
Keywords電荷秩序 / 軌道秩序 / 共鳴X線散乱 / 遷移金属酸化物 / 有機導体 / 放射光
Research Abstract

本特定領域で創製された新物質を対象として、最新の放射光X線散乱実験技術を駆使してその精密構造を決定し、構造的観点から新物質相の電子状態と量子物性発現機構を明らかにした。特に、放射光強磁場下回折装置を設計・制作し、遷移金属酸化物における電荷・スピン・軌道秩序状態の新奇な磁場応答や、有機導体における幾何学的フラストレーション効果による電荷密度波と電荷秩序の共存状態を発見した。

  • Research Products

    (19 results)

All 2008 2007 2006 2005 2004 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (3 results) Book (5 results) Remarks (3 results)

  • [Journal Article] Wigner Crystallization in (DI-DCNQI)2Ag Detected by Synchrotron Radiation X-Ray Diffraction2007

    • Author(s)
      T. Kakiuchi,Y. Wakabayashi,H. Sawa,T. Itou, K. Kanoda
    • Journal Title

      Phys Rev. Lett 98

      Pages: 066402-1-4

    • Peer Reviewed
  • [Journal Article] Supercurrent Pumping in Josephson Junctions with a Half-Metallic Ferromagnet2007

    • Author(s)
      S. Takahashi, S. Hikino, M. Mori, J. Martinek, S. Maekawa
    • Journal Title

      Phys. Rev. Lett 99

      Pages: 057003-1

    • Peer Reviewed
  • [Journal Article] Y. Wakabayashi, D. Bizen, H. Nakao, Y. Murakami, et al2006

    • Author(s)
      Nobel Orbital Ordering Induced by Anisotropic Stress in a Manganite Thin Film
    • Journal Title

      Phys. Rev. Lett 96

      Pages: 017202-1-4

    • Peer Reviewed
  • [Journal Article] B. J. Kim, H. Koh, S. Maekawa, Z.-X. Shen, and C. Kim et al2006

    • Author(s)
      Distinct spinon and holon dispersions in photoemission spectral functions from one-dimensional SrCuO2
    • Journal Title

      Nature Physics 2

      Pages: 397-401

    • Peer Reviewed
  • [Journal Article] Ferro-type orbital state in Mott transition system Ca2-xSrxRuO4 studied by resonant x-ray scattering interference technique2005

    • Author(s)
      M. Kubota, H. Nakao, Y. Murakami, Y. Taguchi, M. Iwama ,Y.Tokura
    • Journal Title

      Phys. Rev. Lett 95

      Pages: 026401-1-4

    • Peer Reviewed
  • [Journal Article] Charge-Order Pattern of the Low-Temperature Phase from a Monoclinic Single Domain of NaV2O5 Uniquely Determined by Resonant X-ray Scattering2005

    • Author(s)
      K. Ohwada, Y. Fujii, Y. Katsuki,H. Nakao, Y. Murakami et al
    • Journal Title

      Phys. Rev. Lett 94

      Pages: 106401-1-4

    • Peer Reviewed
  • [Journal Article] Mott gap excitations in twin-free YBa2Cu3O7-d(TC=93K) studied by RIXS2005

    • Author(s)
      K. Ishii, Y. Murakami et al
    • Journal Title

      Phys. Rev. Lett 94

      Pages: 187002-1-4

    • Peer Reviewed
  • [Journal Article] Superconducting pi Qubit with a Ferromagnetic Josephson Junction2005

    • Author(s)
      T. Yamashita, S. Maekawa
    • Journal Title

      Phys. Rev. Lett 95

      Pages: 097001-1-4

    • Peer Reviewed
  • [Presentation] Geometrical Frustration and Charge Ordering of Molecular Conductor2008

    • Author(s)
      H. Sawa
    • Organizer
      The 21st IUCr Satellite Meeting "Molecular Crystals Exhibiting Exotic Functions"
    • Place of Presentation
      Osaka Japan
    • Year and Date
      2008-08-22
  • [Presentation] Tunnel Magnetoresistance, Spin Accumulation, and Spin Hall Effect2008

    • Author(s)
      S. Maekawa
    • Organizer
      American Physical Sciety March Meeting
    • Place of Presentation
      アメリカ・ニューオリンズ
    • Year and Date
      2008-03-14
  • [Presentation] Orbital ordering and the impurity effect in copper fluoride2007

    • Author(s)
      Y. Murakami
    • Organizer
      Internal Conference on Magnetic Materials
    • Place of Presentation
      Kolkata, India
    • Year and Date
      20071211-16
  • [Book] X線磁気分光と散乱 : X線磁気散乱による磁性研究2007

    • Author(s)
      村上洋一
    • Total Pages
      77-87
    • Publisher
      アイピーシー
  • [Book] Series on Semiconductor Science and Technology, Andreev reflection at ferromagnet/ superconductor interfaces. "Concepts in Spin Electronics"2006

    • Author(s)
      H. Imamura, S. Maekawa, et al
    • Total Pages
      1-416
    • Publisher
      Oxford University Press
  • [Book] Series on Semiconductor Science and Technology, Spin injection and spin transport in hybrid nanostructures. "Concepts in Spin Electronics"2006

    • Author(s)
      S. Takahashi, H. Imamura and S. Maekawa
    • Total Pages
      1-416
    • Publisher
      Oxford University Press
  • [Book] Springer series in Solid State Science, Physics of Transition Metal Oxides, (144)2004

    • Author(s)
      S. Maekawa, T. Tohyama, S. E. Barnes, S. Ishihara
    • Total Pages
      1-331
    • Publisher
      Springer
  • [Book] 放射光科学入門, (電荷・軌道秩序系-ペロブスカイト型Mn酸化物-)2004

    • Author(s)
      村上洋一
    • Total Pages
      225-230
    • Publisher
      東北大学出版
  • [Remarks]

    • URL

      http://calaf.phys.tohoku.ac.jp/

  • [Remarks]

    • URL

      http://www.mcr.nuap.nagoya-u.ac.jp/

  • [Remarks]

    • URL

      http://www.maekawa-lab.imr.tohoku.ac.jp/

URL: 

Published: 2010-06-10   Modified: 2016-04-21  

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