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Investigation of the spin Jahn-Teller effect of the spin frustration systems by the high field ESR measurements

Research Project

Project/Area Number 19540367
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionKobe University

Principal Investigator

OKUBO Susumu  Kobe University, 自然科学系先端融合研究環分子フォトサイエンス研究センター, 助教 (80283901)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2008: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2007: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords磁性 / フラストレーション / スピンゆらぎ / スピンフラストレーション / パイロクロア格子 / 強磁場ESR
Research Abstract

スピンフラストレーション系では、相互作用が競合するためマイナーな作用が支配的である場合がある。スピンJahn-Tellerではスピン-格子相互作用により格子を歪ませることになる。本研究ではフラストレーション効果の解明のため、カゴメ格子やパイロクロア格子をもつ反強磁性体におけるスピンフラストレーション効果を、強磁場ESRを用いることで緩和の速いスピンダイナミクスを調べ、格子を変えてもスピンの揺らぎが強く残ることを明らかにした。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (49 results)

All 2009 2008 2007 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (36 results) Remarks (1 results)

  • [Journal Article] High field ESR measurements of quantum triple chain system Cu_3(OH)_4SO_42009

    • Author(s)
      S. Okubo, H. Yamamoto, M. Fujisawa, 他3名
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 42156-42156

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High frequency ESR measurements of Co-delta chain2009

    • Author(s)
      W. Zhang, S. Okubo, M. Fujisawa, 他3名
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 42243-42243

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic Suceptibility Measurement of S=1/2 Dioptase Lattice Antiferromagnet2009

    • Author(s)
      H. Ohta, M. Fujisawa, N. Souda, S. Okubo, 他7名
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 42151-42151

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High field ESR measements of S=1/2 kagome Heisenberg antiferromagnet ZnCu_3(OH)_6Cl_22009

    • Author(s)
      S. Okubo, M. Tomoo, H. Ohta, H. Kikuchi
    • Journal Title

      Journal of Physics : Conference Seroese 145

      Pages: 12011-12011

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Multi-frequency ESR study of S=1/2 frustration systems Zn_xCu_4-x(OH)_6Cl_22009

    • Author(s)
      M. Tomoo, S. Okubo, T. Sakurai, 以下4名
    • Journal Title

      Journal of Physics : Conference Seroese 145

      Pages: 12035-12035

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] S=1/2 Kagome Lattice Antiferromagnet Cu_3V_2O_7(OH)_2・2H_2O Studied by High Field ESR2009

    • Author(s)
      H. Ohta, W. Zhang, S. Okubo, 以下5名
    • Journal Title

      Journal of Physics : Conference Series 145

      Pages: 12010-12010

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High field ESR measurements of quantum triple chain system CU_3(OH)_4SO_42009

    • Author(s)
      S. Okubo
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 42156-4

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High frequency ESR measurements of Co-delta chain2009

    • Author(s)
      W. Zheng
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 42243-4

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic Susceptibility Measurements Under High Pressure and Magnetization Measurement of S=1/2 Dioptase Lattice Antiferromagnet2009

    • Author(s)
      H. Ohta
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 42151-4

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High field ESR measurements of S=1/2 kagome Heisenberg antiferromagnet ZnCu_3(OH)_6Cl_22008

    • Author(s)
      S. Okubo
    • Journal Title

      Journal of Physics : Conference Series 145

      Pages: 12011-4

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multi-frequency ESR study of S=1/2 frustration systems ZnxCu_<4-x>(OH)_6Cl_22008

    • Author(s)
      M. Tomoo
    • Journal Title

      Journal of Physics : Conference Series 145

      Pages: 12035-4

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] S=1/2 Kagome Lattice Antiferromagnet Cu_3V_2O_7(OH)_2・2H_2O Studied by High Field ESR2008

    • Author(s)
      H. Ohta
    • Journal Title

      Journal of Physics : Conference Series 145

      Pages: 12010-4

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] S=1/2パイロクロア型反強磁性体Cu_2(OH)_3Clの強磁場ESR測定2009

    • Author(s)
      友尾水樹, 大久保晋, 藤澤真士, 櫻井敬博, 太田仁, 菊池彦光
    • Organizer
      日本物理学会
    • Place of Presentation
      立教大学、東京都
    • Year and Date
      2009-03-30
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] カゴメ格子磁性体BaCu_3V_2O_8(OH)2のサブミリ波ESR2009

    • Author(s)
      張衛民, 大久保晋, 太田仁, 藤澤真士, 櫻井敬博, 岡本佳比古, 吉田紘行, 廣井善二
    • Organizer
      日本物理学会
    • Place of Presentation
      立教大学、東京都
    • Year and Date
      2009-03-28
    • Related Report
      2008 Final Research Report
  • [Presentation] カゴメ格子磁性体Cu_3V_2O_7(OH)_2・2H_2Oのサブミリ波ESR II2009

    • Author(s)
      近藤健太, 張衛民, 大久保晋, 太田仁, 藤澤真士, 櫻井敬博, 古川貢, 中村敏和, 吉田紘行, 廣井善二
    • Organizer
      日本物理学会
    • Place of Presentation
      立教大学、東京都
    • Year and Date
      2009-03-28
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] カゴメ格子磁性体BaCu_3V_2O_8(OH)_2のサブミリ波ESR2009

    • Author(s)
      張衛民
    • Organizer
      日本物理学会
    • Place of Presentation
      立教大学、東京都
    • Year and Date
      2009-03-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] ESRからみるCu_2(OH)_3Clの特異な基底状態とスピンダイナミクス2008

    • Author(s)
      友尾水樹, 大久保晋, 櫻井敬博, 藤澤真士, 太田仁, 菊池彦光
    • Organizer
      科研費特定フラストレーション
    • Place of Presentation
      神戸大学、神戸市
    • Year and Date
      2008-12-22
    • Related Report
      2008 Final Research Report
  • [Presentation] S=1/2カゴメ格子磁性体BaCu_3V_2O_8(OH)_2のサブミリ波ESR2008

    • Author(s)
      張衛民, 大久保晋, 太田仁, 藤澤真士, 櫻井敬博, 岡本佳比古, 吉田紘行, 廣井善二
    • Organizer
      科研費特定フラストレーション
    • Place of Presentation
      神戸大学、神戸市
    • Year and Date
      2008-12-22
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] ESRから見るCu2(OH)3Clの特異な基底状態とスピンダイナミクス2008

    • Author(s)
      友尾水樹
    • Organizer
      科研費特定フラストレーション
    • Place of Presentation
      神戸大学、神戸市
    • Year and Date
      2008-12-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] カゴメ-パイロクロア反強磁性体Zn_xCu_<4-x>(OH)6Cl2の強磁場ESR2008

    • Author(s)
      大久保晋, 友尾水樹, 藤澤真士, 太田仁, 菊池彦光
    • Organizer
      科研費特定100Tスピン科学
    • Place of Presentation
      岡山大学、岡山市
    • Year and Date
      2008-12-12
    • Related Report
      2008 Final Research Report
  • [Presentation] カゴメ反強磁性体ZnxCu4-x(OH)6Cl2のESR2008

    • Author(s)
      大久保晋
    • Organizer
      科研費特定フラストレーション
    • Place of Presentation
      大阪大学、大阪府
    • Year and Date
      2008-10-21
    • Related Report
      2008 Final Research Report
  • [Presentation] カゴメ反強磁性体ZnCu_<4-x>(OH)_6Cl_2のESR2008

    • Author(s)
      大久保晋
    • Organizer
      フラストレーションセミナー
    • Place of Presentation
      大阪大学、大阪府
    • Year and Date
      2008-10-21
    • Related Report
      2008 Annual Research Report
  • [Presentation] カゴメ格子磁性体Zn_xCu_<4-x>(OH)_6Cl_2 (0≦x≦1)のサブミリ波ESR IV2008

    • Author(s)
      友尾水樹, 大久保晋, 櫻井敬博, 藤澤真士, 太田仁, 菊池彦光
    • Organizer
      日本物理学会
    • Place of Presentation
      岩手大学、盛岡市
    • Year and Date
      2008-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] カゴメ格子磁性体Cu3V2O7(OH)22H2Oのサブミリ波ESR2008

    • Author(s)
      張衛民, 大久保晋, 太田仁, 藤澤真士, 櫻井敬博, 吉田紘行, 廣井善二
    • Organizer
      日本物理学会
    • Place of Presentation
      岩手大学、盛岡市
    • Year and Date
      2008-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] カゴメ格子磁性体Cu_3V_2O_2(OH)_2H_2Oのサブミリ波ESR2008

    • Author(s)
      張衛民
    • Organizer
      日本物理学会
    • Place of Presentation
      岩手大学、盛岡市
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] カゴメ格子磁性体Zn_xCu_<4-x>(OH)_6Cl_2(O≦x≦1)のサブミリ波ESR IV2008

    • Author(s)
      友尾水樹
    • Organizer
      日本物理学会
    • Place of Presentation
      岩手大学、盛岡市
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] S=1/2 Kagome Lattice Antiferromagnet Cu_3V_2O_7(OH)_2・2H_2O Studied by High Field ESR2008

    • Author(s)
      H. Ohta, W. Zhang, S. Okubo, M. Tomoo, M. Fujisawa, H. Yoshida, Y. Okamoto, Z. Hiroi
    • Organizer
      Highly Frustrated Magnetism 2008
    • Place of Presentation
      Braunschweig, Germany
    • Year and Date
      2008-09-08
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Multi-frequency ESR study of S=1/2 frustration systems Zn_xCu_4-x(OH)_6Cl_22008

    • Author(s)
      M. Tomoo, S. Okubo, T. Sakurai, T. Tomita, M. Fujisawa, H. Ohta, H. Kikuchi
    • Organizer
      Highly Frustrated Magnetism 2008
    • Place of Presentation
      Braunschweig, Germany
    • Year and Date
      2008-09-08
    • Related Report
      2008 Final Research Report
  • [Presentation] High field ESR measurements of S=1/2 kagome Heisenberg antiferromagnet ZnCu_3(OH)_6Cl_22008

    • Author(s)
      S. Okubo, M. Tomoo, H. Ohta, H. Kikuchi
    • Organizer
      Highly Frustrated Magnetism 2008
    • Place of Presentation
      Braunschweig, Germany
    • Year and Date
      2008-09-08
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Multi-frequency ESR study of S=1/2 frustration systems Zn_xCu_<4-x>(OH)_6Cl_22008

    • Author(s)
      M. Tomoo
    • Organizer
      Highly Frustrated Magnetism 2008
    • Place of Presentation
      Braunschweig, Germany
    • Year and Date
      2008-09-08
    • Related Report
      2008 Annual Research Report
  • [Presentation] High frequency ESR measurements of Co-delta chain2008

    • Author(s)
      W. Zhang, S. Okubo, M. Fujisawa, T. Tomita, H. Ohta, H. Kikuchi
    • Organizer
      25_<th> International Conference on Low Temperature Physics
    • Place of Presentation
      RAI Amsterdam, Nederland
    • Year and Date
      2008-08-12
    • Related Report
      2008 Final Research Report
  • [Presentation] High frequency ESR measurements of Co-delta chain2008

    • Author(s)
      W Zheng
    • Organizer
      25^<th> International Conference on Low Temeprature Physics
    • Place of Presentation
      RAI, Amsterdam, Nederland
    • Year and Date
      2008-08-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] Magnetic Susceptibility Measurements Under High Pressure and Magne tization Measurement of S=1/2 Dioptase Lattice Antiferromagnet2008

    • Author(s)
      H. Ohta
    • Organizer
      25^<th> International Conference on Low Temeprature Physics
    • Place of Presentation
      RAI, Amsterdam, Nederland
    • Year and Date
      2008-08-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] Magnetic Suceptibility Measurement of S=1/2 Dioptase Lattice Antiferromagnet2008

    • Author(s)
      H. Ohta, M. Fujisawa, N. Souda, S. Okubo, E. Ohmichi, T. Sakurai, H. Kikuchi, T. Ono, H. Tanaka, K. Matsubayashi, Y. Uwatoko
    • Organizer
      25^<th> International Conference on Low Temperature Physics
    • Place of Presentation
      RAU Ansterdam, Nederland
    • Year and Date
      2008-08-11
    • Related Report
      2008 Final Research Report
  • [Presentation] High field ESR measurements of quantum triple chain system Cu_3(OH)_4SO_42008

    • Author(s)
      S. Okubo, H. Yamamoto, M. Fujisawa, H. Ohta, T. Nakamura, H. Kikuchi
    • Organizer
      25^<th> International Conference on Low Temperature Physics
    • Place of Presentation
      RAI Amsterdam, Nederland
    • Year and Date
      2008-08-11
    • Related Report
      2008 Final Research Report
  • [Presentation] High field ESR measurements of quantum triple chain system CU3(OH)4S042008

    • Author(s)
      S. Okubo
    • Organizer
      25^<th> International Conference on Low Temeprature Physics
    • Place of Presentation
      RAI, Amsterdam, Nederland
    • Year and Date
      2008-08-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] ダイヤモンド鎖化合物(4, 4'-bpy)Cu_3(OH)_2(MoO_4)_2の強磁場ESR2008

    • Author(s)
      日野俊一, 大久保晋, 太田仁, 菊池彦光
    • Organizer
      日本物理学会
    • Place of Presentation
      近畿大学、大阪府
    • Year and Date
      2008-03-25
    • Related Report
      2008 Final Research Report
  • [Presentation] カゴメ格子磁性体Zn_xCu_4-x(OH)_6Cl_2 (0≦x≦1)のサブミリ波ESR III2008

    • Author(s)
      友尾水樹, 大久保晋, 櫻井敬博, 冨田崇弘, 藤澤真士, 太田仁, 菊池彦光
    • Organizer
      日本物理学会
    • Place of Presentation
      近畿大学、大阪府
    • Year and Date
      2008-03-25
    • Related Report
      2008 Final Research Report
  • [Presentation] 三本鎖磁性体Cu_3(OH)_4SO_4の強磁場ESR2008

    • Author(s)
      大久保晋, 山本祐司, 藤澤真士, 櫻井敬博, 太田仁, 菊池彦光, 中村敏和
    • Organizer
      日本物理学会
    • Place of Presentation
      近畿大学、大阪府
    • Year and Date
      2008-03-23
    • Related Report
      2008 Final Research Report
  • [Presentation] S=1/2カゴメ格子反強磁性体Zn_xCu_3(OH)_6Cl_2 のスピンダイナミクス2008

    • Author(s)
      大久保晋, 友尾水樹, 太田仁, 菊池彦光
    • Organizer
      科研費特定フラストレーション
    • Place of Presentation
      京都大学、京都府
    • Year and Date
      2008-01-11
    • Related Report
      2008 Final Research Report
  • [Presentation] 幾何学的フラストレーション系のESRによる研究2007

    • Author(s)
      大久保晋, 友尾水樹, 太田仁, 斉藤高志, 島川祐一, 菊池彦光
    • Place of Presentation
      分子科学研究所、岡崎市
    • Year and Date
      2007-12-17
    • Related Report
      2008 Final Research Report
  • [Presentation] 強磁場ESRによる幾何学的フラストレーション系の研究2007

    • Author(s)
      太田仁, 大久保晋, 友尾水樹, 櫻井敬博, 菊池彦光
    • Organizer
      科研費特定フラストレーション
    • Place of Presentation
      阪大中之島センター、大阪府
    • Year and Date
      2007-11-11
    • Related Report
      2008 Final Research Report
  • [Presentation] High field ESR studies of frustrated spin systems2007

    • Author(s)
      S. Okubo, M. Tomoo, N. Souda, H. Ohta, H. Kikuchi
    • Organizer
      神戸大学分子フォトサイエンス研究センターフォーラム
    • Place of Presentation
      神戸大学、神戸市
    • Year and Date
      2007-09-24
    • Related Report
      2008 Final Research Report
  • [Presentation] S=1/2パイロクロア格子反強磁性体Cu2Cl(OH)3の強磁場SR2007

    • Author(s)
      大久保晋, 友尾水樹, 藤澤真士, 大道英二, 太田仁, 菊池彦光
    • Organizer
      日本物理学会
    • Place of Presentation
      北海道大学、札幌市
    • Year and Date
      2007-09-24
    • Related Report
      2008 Final Research Report
  • [Presentation] S=1/2パイロクロア格子反強磁性体Cu_2Cl(OH)_3の強磁場ESR2007

    • Author(s)
      大久保晋
    • Organizer
      日本物理学会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-24
    • Related Report
      2007 Annual Research Report
  • [Presentation] カゴメ格子磁性体Zn_xCu_<4-x>(OH)_6Cl_2 (0≦x≦1)のサブミリ波ESR II2007

    • Author(s)
      友尾水樹, 大久保晋, 櫻井敬博, 冨田崇弘, 藤澤真士, 太田仁, 菊池彦光
    • Organizer
      日本物理学会
    • Place of Presentation
      北海道大学、札幌市
    • Year and Date
      2007-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] 三本鎖磁性体Cu_3(OH)_4SO_4の強磁場ESRと磁化測定2007

    • Author(s)
      山本祐司, 藤澤真士, 櫻井敬博, 太田仁, 大久保晋, 冨田崇弘, 菊池彦光, 中村敏和
    • Organizer
      日本物理学会
    • Place of Presentation
      北海道大学、札幌市
    • Year and Date
      2007-09-21
    • Related Report
      2008 Final Research Report
  • [Presentation] Spin dynamics of structurally perfect S=1/2 Kagome antiferromagnet ZnCu_3(OH)_6Cl_2 by high frequency ESR2007

    • Author(s)
      S. Okubo, M. Tomoo, T. Sakurai, T. Tomita, M. Fujisawa, H. Ohta, H. Kikuchi
    • Organizer
      東京大学21世紀COEプログラム「極限量子系とその対称性」の国際ワークショップ"New developments in ESR of strongly correlated systems
    • Place of Presentation
      東京大学物性研究所、柏市
    • Year and Date
      2007-05-21
    • Related Report
      2008 Final Research Report
  • [Remarks]

    • URL

      http://extreme.phys.sci.kobe-u.ac.jp/extreme/staffs/staff.html

    • Related Report
      2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2020-05-15  

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