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2008 Fiscal Year Final Research Report

The Ordering and the Fluctuation of Electronic Degrees of Freedom Studied by Coherent X-rays and High Brilliance Neutrons

Research Project

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Project/Area Number 16104005
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionTohoku University

Principal Investigator

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

Co-Investigator(Kenkyū-buntansha) IWASA Kazuaki  東北大学, 大学院・理学研究科, 准教授 (00275009)
ISHIHARA Sumio  東北大学, 大学院・理学研究科, 准教授 (30292262)
YAMADA Kazuyoshi  東北大学, 原子分子材料科学高等研究機構, 教授 (70133923)
OOYAMA Kenji  東北大学, 金属材料研究所, 准教授 (60241569)
MATSUMURA Takesi  広島大学, 大学院・先端物質科学研究科, 准教授 (00312546)
Project Period (FY) 2004 – 2008
Keywordsコヒ-レントX線 / 高輝度中性子 / 電荷秩序 / 軌道秩序 / スピン秩序
Research Abstract

放射光と中性子を利用した装置・実験手法の開発・改良を行うことにより、遷移金属酸化物・希土類ホウ化物・スクッテルダイト化合物などの強相関電子系を対象として、その電荷・スピン・軌道自由度の秩序状態とその揺らぎを観測し、系が示す新奇物性発現機構の解明を行った。

  • Research Products

    (23 results)

All 2009 2008 2007 2006 2005 2004 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (9 results) Book (2 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Dual Nature of a Ni Dopant in the Hole-Type La_<2-x>Sr_xCuO_4 Cuprate Superconductor2009

    • Author(s)
      H. Hiraka, D. Matsumura, Y. Nishihata, J. Mizuki, and K.Yamada
    • Journal Title

      Phys. Rev. Lett. 102

      Pages: 037002-1-4

    • Peer Reviewed
  • [Journal Article] Hidden Quantum Spin-Gap State in the Static Stripe Phase of High-Temperature La_<2-x>Sr_xCuO_4 Superconductors2009

    • Author(s)
      M. Kofu, S.-H. Lee, M. Fujita, H.-J. Kang, H. Eisaki, and K.Yamada
    • Journal Title

      Phys. Rev. Lett. 102

      Pages: 047001-1-4

    • Peer Reviewed
  • [Journal Article] Dilution effect in correlated electron system with orbital degeneracy2009

    • Author(s)
      T. Tanaka, and S. Ishihara
    • Journal Title

      Phys. Rev. B79

      Pages: 035109-1-11

    • Peer Reviewed
  • [Journal Article] Orbital ordering in RVO_3 (R=Y, Tb) controlled by hydrostatic pressure2008

    • Author(s)
      D. Bizen, K. Nakatsuka, T. Murata, H. Nakao, Y.Murakami
    • Journal Title

      S. Miyasaka and Y. Tokura, Phys. Rev. B78

      Pages: 224104-1-6

    • Peer Reviewed
  • [Journal Article] Low-Energy Spin Fluctuations in the Ground States of Electron-Doped Pr_<1-x>LaCe_xCuO_<4+δ> Cuprate Superconductors2008

    • Author(s)
      M. Fujita, M. Matsuda, S.-H. Lee, M. Nakagawa, and K.Yamada
    • Journal Title

      Phys. Rev. Lett. 101

      Pages: 107003-1-4

    • Peer Reviewed
  • [Journal Article] Dilution Effects in Two-dimensional Quantum Orbital System2007

    • Author(s)
      T. Tanaka and S.Ishihara
    • Journal Title

      Phys. Rev. Lett. 98

      Pages: 256402-1-4

    • Peer Reviewed
  • [Journal Article] Electron-Phonon Coupling Reflecting Dynamic Charge Inhomogeneity in Copper Oxide Superconductors2006

    • Author(s)
      D. Reznik, K.Yamada, G.D. Gu et.al.
    • Journal Title

      Nature 440

      Pages: 1170-1173

    • Peer Reviewed
  • [Journal Article] Nobel orbital Ordering Induced by Anisotropic Stress in a Manganite Thin Film2006

    • Author(s)
      Y. Wakabayashi, D. Bizen, H. Nakao, Y.Murakami, M. Nakamura, Y. Ogimoto, K. Miyano, and H. Sawa
    • Journal Title

      Phys. Rev. Lett 96

      Pages: 017202-1-4

    • Peer Reviewed
  • [Journal Article] Ferro-type orbital state in Mott transition system Ca_<2-x>Sr_xRuO_4 studied by resonant x-ray scattering interference technique2005

    • Author(s)
      M. Kubota, Y.Murakami, M. Mizumaki, H. Ohsumi, N. Ikeda, S. Nakatsuji, H. Fukazawa and Y. Maeno
    • Journal Title

      Phys. Rev. Lett. 95

      Pages: 026401-1-4

    • Peer Reviewed
  • [Presentation] Asia Science Seminar on Frontier Science at High-Intensity Proton Accelerators2008

    • Author(s)
      Y. Murakami
    • Organizer
      Complementary Use of Synchrotron light, Neutron, and Muon(invited)
    • Place of Presentation
      Chaina
    • Year and Date
      20081019-25
  • [Presentation] The Fourth Biennial American Conference on Neutron Scattering2008

    • Author(s)
      K. Yamada
    • Organizer
      「What Clarified by Neutron by Neutron Scattering in High-Tc Research(Invited)
    • Place of Presentation
      Santa Fe, S.A.
    • Year and Date
      20080511-15
  • [Presentation] Internal Conference on Magnetic Materials2007

    • Author(s)
      Y. Murakami
    • Organizer
      Orbital ordering and the impurity effect in copper fluoride(invited)
    • Place of Presentation
      Kolkata, India
    • Year and Date
      20071211-16
  • [Presentation] International Conference on New Quantum Phenomena in Skutterudite and Related Systems2007

    • Author(s)
      K. Iwasa
    • Organizer
      Field induced magnetic moment distribution in the ordered phase of PrFe4P12(invited)
    • Place of Presentation
      kobe
    • Year and Date
      20070926-30
  • [Presentation] "The 17^<th>International Conference on Magnetism"(ICM)2006

    • Author(s)
      K. Yamada
    • Organizer
      Role of Neutron Scattering for High-T_c Research: Present and Future(Invited)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      20060820-25
  • [Presentation] International Conference of Magnetism2006

    • Author(s)
      Y. Murakami
    • Organizer
      Mechanism of resonant X-ray scattering to observe the orbital ordering(invited)
    • Place of Presentation
      kyoto
    • Year and Date
      20060820-25
  • [Presentation] 4th International Symposium on Electronic and Atomic Structures (ISEAS-IV)2005

    • Author(s)
      S. Ishihara
    • Organizer
      Doping Effects on Orbital Order in Correlated Electron Systems(invited)
    • Place of Presentation
      Tamkang University, Taiwan
    • Year and Date
      20051110-11
  • [Presentation] X-ray spectroscopy of Magnetic Solids (XRMS 2005 )2005

    • Author(s)
      Y. Murakami.
    • Organizer
      Orbital ordering in perovskites(invited)
    • Place of Presentation
      Swiss
    • Year and Date
      20051018-20
  • [Presentation] Yukawa International Seminar 2004 (YKIS2004) --- Physics of Strongly Correlated Electron Systems---2004

    • Author(s)
      Y. Murakami
    • Organizer
      Orbital Ordering and Excitation Studied by Resonant X-ray Scattering(invited)
    • Place of Presentation
      kyouto
    • Year and Date
      20041105-10
  • [Book] 放射光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
      アイシーピー
  • [Book] 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
      放射光科学入門(東北大学出版会)
  • [Remarks]

    • URL

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

  • [Remarks]

    • URL

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

  • [Patent(Industrial Property Rights)] 中性子回折装置2007

    • Inventor(s)
      大山研司, 山田和芳, 井澤和幸
    • Industrial Property Rights Holder
      大山研司, 山田和芳, 井澤和幸
    • Industrial Property Number
      特願, 2007-301728
    • Acquisition Date
      2007-11-21

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

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