Investigation of spin liquid state near the quantum critical point by high-pressure measurements of quantum kagome lattice antiferromagnets

2012 Fiscal Year Final Research Report

• Project/Area Number: 22540348
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kobe University
• Principal Investigator: OKUBO Susumu 神戸大学, 分子フォトサイエンス研究センター, 助教 (80283901)
• Project Period (FY): 2010 – 2012
• Keywords: 磁性

Research Abstract

To investigate spin-liquid state stability for Dzyaloshinski-Moriya (DM) interaction (antisymmetric exchange interaction), magnetic susceptibility measurements of quantum kagome antiferromagnets ZnCu_3(OH)_6Cl_2 (Herbertsmithite) and Cu_3V_2O_7(OH)_2・2H_2O (Volborthite) have been performed under high-pressure at low temperature. Quantum transition from spin-liquid state to Neel state in these systems cannot observed in high-pressure up to 7.9 kbar at low temperature down to 1.8 K. On the other hand, D terms of DM interaction in quantum-spin kagome like antiferromagnet Cu_2O(SO_4) (Dolerophanite), classical-spin kagome lattice antiferromagnet KCr_3(SO_4)_2(OH_6) (Cr-jarosite) and spin-liquid ground state honeycomb lattice antiferromagnet Bi_3Mn_4O_12(NO_3) have been estimated using high-frequency ESR measurements.

Research Products

• [Journal Article] Antiferromagnetic ordering in Sr_2CrO_4 (2013)
  • Author(s): M. Rani, H. Sakurai, S. Okubo, K. Takamoto, R. Nakata, T. Sakurai, H. Ohta, A. Matsuo, Y. Kohama, K. Kindo, J. Ahmad
  • Journal Title: J. Phys.: Cond. Mat Volume: 25 Pages: 226001-5
  • DOI: DOI:10.1088/0953-8984/25/22/226001
  • Peer Reviewed
• [Journal Article] Developments of Multi-extreme High Field ESR in Kobe (2013)
  • Author(s): H. Ohta, S. Okubo, E. Ohmichi, T. Sakurai, W.-M, Zhang, T. Shimokawa
  • Journal Title: J. Low Temp. Phys Volume: 170 Pages: 511-519
  • DOI: DOI10.1007/s10909-012-0683-7
• [Journal Article] Dzyaloshinsky-Moriya interaction and field-induced magnetic order in an antiferromagnetic honeycomb lattice compound Bi_3Mn_4O_12(NO_3) studied by high-field electron spin resonance (2012)
  • Author(s): S. Okubo, T. Ueda, H. Ohta, W. Zhang, T. Sakurai, N. Onishi, M. Azuma, Y. Shimakawa, H. Nakano, T. Sakai
  • Journal Title: Phys. Rev. B Volume: 86 Pages: 140401(R)-4
  • DOI: DOI:10.1103/PhysRevB.86.140401
  • Peer Reviewed
• [Journal Article] Possible new temperature phase observed in GeCo_2O_4 spinel by high-field ESR (2012)
  • Author(s): T. Yamasaki, S. Okubo, H. Ohta, T. Sakurai, S. Ikeda, H. Oshima, M. Takahashi, S. Hara, K. Tomiyasu, T. Watanabe
  • Journal Title: J. Phys.: Conf. Serie Volume: 400 Pages: 032119-4
  • DOI: DOI:10.1088/1742-6596/400/3/032119
• [Journal Article] Dzyloshinsky-Moriya Interaction Estimated by AFMR of Kagome Like Substance Cu_2O(SO_4) (2012)
  • Author(s): N. Takahashi, S. Okubo, H. Ohta, T. Sakurai, M. Fujisawa, H. Kikuchi
  • Journal Title: J. Phys.: Conf. Serie. Volume: 400 Pages: 032097-4
  • DOI: DOI:10.1088/1742-6596/400/3/032097
• [Journal Article] Anomalous Spin Dynamics Observed by High-Frequency ESR in Honeycomb Lattice Antiferromagnet InCu_2/3V_1/3O_3 (2011)
  • Author(s): S. Okubo, H. Wada, H. Ohta, T. Tomita, M. Fujisawa, T. Sakurai, E. Ohmichi, H.Kikuchi
  • Journal Title: J. Phys. Soc. Jpn Volume: 80 Pages: 023705-4
  • DOI: DOI:10.1143/JPSJ.80.023705
  • Peer Reviewed
• [Journal Article] Spin dynamics of S=1/2 kagome lattice antiferromagnets observed by high-field ESR (2010)
  • Author(s): H. Ohta, W. Zhang, S. Okubo, M. Fujisawa, T. Sakurai, Y. Okamoto, H. Yoshida, Z. Hiroi
  • Journal Title: Phys. Status Solidi B Volume: 247 Pages: 679-681
  • DOI: DOI10.1002/pssb.200983033
  • Peer Reviewed
• [Journal Article] High-Field ESR Measurements of S=1/2 Kagome Lattice Antiferromagnet BaCu_3V_2O_8(OH)_2 (2010)
  • Author(s): W. Zhang, H. Ohta, S. Okubo, M. Fujisawa, T. Sakurai, Y. Okamoto, H. Yoshida, Z. Hiroi
  • Journal Title: J. Phys. Soc. Jpn Volume: 79 Pages: 023708-4
  • DOI: DOI:10.1143/JPSJ.79.023708
  • Peer Reviewed
• [Journal Article] Spin-Gap Observation in the Triangular Lattice Antiferromagnet InMnO_3by High-Field ESR (2010)
  • Author(s): H. Ohta, N. Matsumi, S. Okubo, M. Fujisawa, T. Sakurai, H. Kikuchi, T. Nakamura
  • Journal Title: J. Phys.: Conf. Serie. Volume: 200 Pages: 022041-4
  • DOI: DOI:10.1088/1742-6596/200/2/022041
• [Presentation] ハニカム格子反強磁性体の秩序の特異性 (2012)
  • Author(s): 大久保晋
  • Organizer: 基研研究会「量子スピン系の物理」
  • Place of Presentation: 京都大学基礎物理学研究所パナソニック国際交流ホール (招待)
  • Year and Date: 20121112-14
• [Presentation] S=3/2 カゴメ格子反強磁性体 KCr_3(SO_4)_2(OH)_6のテラヘルツ ESR 測定 (2012)
  • Author(s): 大久保晋,中田亮平,高橋直己,下川統久朗,櫻井敬博,張衛民,太田仁,奥田浩司,原茂生,佐藤博彦
  • Organizer: 第22回日本赤外線学会研究発表会
  • Place of Presentation: 関西大学千里山キャンパス 100 周年記念会館ホール
  • Year and Date: 20121101-02
• [Presentation] ESR Measurement of S=3/2 Kagome Antiferromagnet Cr-Jarosite (2012)
  • Author(s): R. Nakata, N. Takahashi, W. Zhang, S. Okubo, H. Ohta, T. Sakurai, K. Okuda, S. Hara, H. Sato
  • Organizer: 8th Asia-Pacific EPR/ESR Symposium (APES 2012)
  • Place of Presentation: Beijing, China
  • Year and Date: 20121011-15
• [Presentation] Cr-Jarosite の ESR 測定 II (2012)
  • Author(s): 中田亮平,高橋直己,櫻井敬博,張衛民,大久保晋,太田仁,奥田浩司,原茂生,佐藤博彦
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 横浜国立大学常盤台キャンパス
  • Year and Date: 20120918-21
• [Presentation] 強磁場 ESR 測定による S=3/2 ハニカム格子反強磁性体Bi_3Mn_4O_12(NO_3)のDM 相互作用の研究 (2012)
  • Author(s): 大久保晋,植田友成,太田仁,張衛民,櫻井敬博,大西希,東正樹,島川祐一,中野博生,坂井徹
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 横浜国立大学常盤台キャンパス
  • Year and Date: 20120918-21
• [Presentation] Origin of Field Induced Magnetic Ordering in Frustrated Honeycomb Lattice Antiferromagnet (2012)
  • Author(s): S. Okubo, T. Ueda, W. Zhang, T. Sakurai, M. Fujisawa, H. Ohta, N. Ohnishi, M. Azuma, Y. Shimakawa, N. Kumada
  • Organizer: 19th International Conference on Magnetism
  • Place of Presentation: Busan, Korea
  • Year and Date: 20120708-13
• [Presentation] Cr Jarosite の ESR 測定 (2012)
  • Author(s): 中田亮平, 高橋直己, 張衞民, 大久保晋, 太田仁, 奥田浩司, 原茂生, 佐藤博彦
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 兵庫県西宮市 関西学院大学
  • Year and Date: 20120324-27
• [Presentation] 蜂の巣格子反強磁性体のテラヘルツ光ESR 測定 (2012)
  • Author(s): 大久保晋, 和田秀雄, 張衛民, 櫻井敬博, 太田仁, 冨田崇弘, 藤澤真士, 菊池彦光
  • Organizer: 兵庫県立大学大学院・物質理学研究科「フロンティア機能物質創製センター」シンポジウム
  • Place of Presentation: フロンティア機能物質創製センター (招待)
  • Year and Date: 2012-12-22
• [Presentation] 多周波数 ESR 測定によるハニカム格子反強磁性体 InCu_2/3V_1/3O_3 の特異なスピンダイナミクスの観測 (2011)
  • Author(s): 大久保晋, 和田秀雄, 太田仁, 冨田崇弘, 藤澤真士, 櫻井敬博, 大道英二, 菊池彦光
  • Organizer: 第50回電子スピンサイエンス学会年会(SEST2011)
  • Place of Presentation: 仙台市仙台国際センター
  • Year and Date: 20111116-18
• [Presentation] Development of High-Frequency High Field ESR system and Its Application to Spin Frustration System (2011)
  • Author(s): S. Okubo
  • Organizer: 29th National Physics Congress
  • Place of Presentation: College of Science, University of the Philippines Diliman, Philippines (plenary)
  • Year and Date: 20111023-25
• [Presentation] フラストレートスピン系 Dolerophanite (Cu2O(SO4))の強磁場 ESR (2011)
  • Author(s): 大久保晋, 高橋直己, 張衛民, 櫻井敬博, 太田仁, 藤澤真士, 菊池彦光
  • Organizer: 日本物理学会年次大会 2011 年秋季大会
  • Place of Presentation: 富山大学五福キャンパス
  • Year and Date: 20110921-24
• [Presentation] Dzyaloshinsky-Moriya Interaction Estimated by AFMR of Kagome Like Substance Cu_2O(SO_4) Observed at 1.8K (2011)
  • Author(s): N. Takahashi, M. Tomoo, S. Okubo, T. Sakurai, M. Fujisawa, H. Kikuchi, H. Ohta
  • Organizer: 26th International Conference on Low Temperature Physics
  • Place of Presentation: Beijing International Convention Center, China (poster)
  • Year and Date: 20110810-18
• [Presentation] Low-Temperature Multi-frequency ESR Study of Spin 1/2 Kagome lattice Antiferromagnetic Materials (2011)
  • Author(s): W. Zhang, M. Tomoo, S. Okubo, T. Sakurai, H. Ohta, H. Kikuchi, H. Yoshida, Y.Okamoto, and Z. Hiroi
  • Organizer: 26th International Conference on Low Temperature Physics
  • Place of Presentation: Beijing International Convention Center, China (poster)
  • Year and Date: 20110810-18
• [Presentation] Spin Dynamics of Frustrated Honeycomb Lattice Antiferromagnet (2011)
  • Author(s): S. Okubo, Y. Yu, W. Zhang, T. Sakurai, M. Fujisawa, H. Ohta, H. Kikuchi, N. Ohnishi, M. Azuma, Y. Shimakawa, and N. Kumada
  • Organizer: 26th International Conference on Low Temperature Physics
  • Place of Presentation: Beijing International Convention Center, China (invite)
  • Year and Date: 20110810-18
• [Presentation] Multi-Frequency ESR measurements of Frustrated Honeycomb Lattice Antiferromagnets (2011)
  • Author(s): S. Okubo
  • Organizer: A joint meeting between the MEXT Japanese Network on "Novel State of Matter Induced by Frustration" and the Quantum Materials Program of the Canadian Institute for Advanced Research
  • Place of Presentation: Vancouver, Canada (poster)
  • Year and Date: 20110518-0601
• [Presentation] カゴメ格子磁性体 BaCu_3V_20_8(OH)_2のテラヘルツ光ESR (2010)
  • Author(s): 張衛民,大久保晋,友尾水樹,櫻井敬博,太田仁,岡本佳比古,吉田紘行,広井善二
  • Organizer: 第20回(平成22 年度)日本赤外線学会
  • Place of Presentation: 立命館大学びわこくさつキャンパス (ポスター)
  • Year and Date: 20101104-05
• [Presentation] カゴメ格子磁性体 BaCu_3V_2O_8(OH)_2のサブミリ波 ESR III (2010)
  • Author(s): 張衛民,大久保晋,太田仁,友尾水樹,櫻井敬博,岡本佳比古,広井善二,吉田紘行
  • Organizer: 日本物理学会2010 年秋季大会
  • Place of Presentation: 大阪府立大学中百舌鳥キャンパス (ポスター)
  • Year and Date: 20100923-26
• [Presentation] Possible kagome ice state in Co2(OH)3Br studied by high field ESR (2010)
  • Author(s): M. Tomoo, S. Okubo, M. Fujisawa, T. Sakurai, H. Ohta, M. Hagihara, X.-G. Zheng
  • Organizer: The 5th International Conference on Highly Frustrated Magnetism 2010
  • Place of Presentation: John Hopkins University, Baltimore, USA (poster)
  • Year and Date: 20100801-08
• [Presentation] Multi frequency ESR measurements of S=3/2 honeycomb lattice antiferromagnet Bi_3Mn_4O_12(NO_3) (2010)
  • Author(s): S. Okubo, Y. Yu, W. Zhang, M. Fujisawa, T. Sakurai, H. Ohta, N. Ohishi, M. Azuma, Y. Shimakawa, N. Kumada
  • Organizer: The 5th International Conference on Highly Frustrated Magnetism 2010
  • Place of Presentation: John Hopkins University, Baltimore, USA (poster)
  • Year and Date: 20100801-08
• [Remarks]
  • URL: http://extreme.phys.sci.kobe-u.ac.jp/extreme/staffs/okubo/