Exotic orderings in geometrically frustrated magnets
Project Area | Novel States of Matter Induced by Frustration |
Project/Area Number |
19052005
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Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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Allocation Type | Single-year Grants |
Review Section |
Science and Engineering
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Research Institution | Kyoto University |
Principal Investigator |
MAEGAWA Satoru 京都大学, 大学院・人間・環境学研究科, 教授 (40135489)
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Co-Investigator(Kenkyū-buntansha) |
OHTA Hitoshi 神戸大学, フォトサイエンス研究センター, 教授 (70194173)
KIKUCHI Hikomitsu 福井大学, 工学部, 教授 (50234191)
OYAMADA Akira 京都大学, 大学院・人間・環境学研究科, 助教 (60211835)
MATSUHIRA Kazuyuki 九州工業大学, 工学部, 助教 (40312342)
|
Co-Investigator(Renkei-kenkyūsha) |
ISHIDA Kenji 京都大学, 大学院・理学研究科, 教授 (90243196)
|
Project Period (FY) |
2007 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥146,700,000 (Direct Cost: ¥146,700,000)
Fiscal Year 2011: ¥15,800,000 (Direct Cost: ¥15,800,000)
Fiscal Year 2010: ¥27,100,000 (Direct Cost: ¥27,100,000)
Fiscal Year 2009: ¥36,100,000 (Direct Cost: ¥36,100,000)
Fiscal Year 2008: ¥36,300,000 (Direct Cost: ¥36,300,000)
Fiscal Year 2007: ¥31,400,000 (Direct Cost: ¥31,400,000)
|
Keywords | フラストレーション / 磁性体 / 新奇秩序 / 三角格子 / かごめ格子 / パイロクロア / 反強磁性体 / 核磁気共鳴 / 反強磁性 |
Research Abstract |
We have searched and synthesized several new geometrically frustrated magnets on the triangular, kagome and pyrochlore lattices in which interactions between spins compete with each other even on these regular lattices. We have investigated new magnetic phase transitions and magnetic states by means of several experimental methods, such as NMR, magnetization, specific heat and ESR measurements. Especially we have discovered new quantum spin liquid state, unconventional magnetic ordered states and partially ordered Kondo states.
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Report
(7 results)
Research Products
(430 results)
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[Journal Article] Development of high-pressure, high-filed and multi-frequency ESR apparatus and its application to quantum spin system2010
Author(s)
T.Sakurai, T.Horie, M.Tomoo, K.Kondo, N.Matsumi, S.Okubo, H.Ohta, Y.Uwatoko, K.Kudo, Y.Koike, H.Tanaka
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Journal Title
J.Phys. : Conf.Series
Volume: 215
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Peer Reviewed
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[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
Organizer
日本物理学会第67回年次大会
Place of Presentation
関西学院大学西宮上ヶ原キャンパス
Year and Date
2012-03-25
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[Presentation] Quantum spin liquid in a spin 1/2 antiferromagnet on the triangular lattice, EtMe_3Sb[Pd(dmit)_2]_22011
Author(s)
S.Maegawa, T.Itou, K.Yamashita, M.Nishiyama, A.Oyamada, K.Kubo, R.Kato
Organizer
The Seventh International Conference on Magnetic and Superconducting Materials (MSM11)
Place of Presentation
Avillion, Port Dickson, Negeri Sembilan, Malaysia(招待講演)
Year and Date
2011-10-10
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[Presentation] Observation of Terahertz Gap in CuO by High Field ESR2011
Author(s)
H.Ohta, S.Okubo, T.Kobayashi, T.Sakurai, A.Matsuo, K.Kindo, X.D.Zheng, S.Nishihara, M.Fujisawa, H.Kikuchi
Organizer
Second International Workshop on Frontier Science in Pulsed High Magnetic Fields
Place of Presentation
Wuhan National High Magnetic Field Center, China(招待講演)
Related Report
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[Presentation] High field ESR studies of kagome antiferromagnets2011
Author(s)
H.Ohta
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
Coast Plaza Hotel and Suites, Vancouver, Canada
Related Report
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[Presentation] Spin Dynamics of Frustrated Honeycomb Lattice Antiferromagnet2011
Author(s)
S.Okubo, Y.Yu, W.Zhang, T.Sakurai, M.Fujisawa, H.Ohta, H.Kikuchi, N.Ohnishi, M.Azuma, Y.Shimakawa, N.Kumada
Organizer
26th International Conference on Low Temperature Physics
Place of Presentation
Beijing International Convention Center, China(招待講演)
Related Report
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[Presentation] Possible new temperature phase observed in GeCo_2O_4 spinel by high field ESR2011
Author(s)
T.Yamasaki, S.Okubo, H.Ohta, T.Sakurai, S.Ikeda, H.Oshima, M.Takahashi, S.Hara, K.Tomiyasu, T.Watanabe
Organizer
26th International Conference on Low Temperature Physics
Place of Presentation
Beijing International Convention Center, China
Related Report
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[Presentation] Application of THz High-Field EMR to Antiferromagnets with THz Spin Gaps2011
Author(s)
H.Ohta, S.Okubo, T.Kobayashi, T.Sakurai, A.Matsuo, K.Kindo, S.G.Cheng, S.Nishihara, M.Fujisawa, H.Kikuchi
Organizer
Spin Physics, Spin Chemistry and Spin Technology
Place of Presentation
Kazan, Rossiya(招待講演)
Related Report
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[Presentation] ESR measurement of cluster magnet V_4S_9Br_42011
Author(s)
K.Fujimoto, T.Sakurai, R.Goto, S.Okubo, H.Ohta, Y.Tomioka, T.Waki, Y.Tabata, H.Nakamura
Organizer
International Workshop "Advanced ESR Studies for New Frontiers in Biofunctional Spin Science and Technology
Place of Presentation
Takigawa Memorial Hall, Kobe University
Related Report
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[Presentation] Observation of ESR in Field Induced Magnetic Phase2011
Author(s)
S.Okubo, K.Kondo, S.Hino, T.Sakurai, M.Fujisawa, H.Ohta, K.Nanami, C.Michioka, T.Wake, M.Kato, K.Yoshimura
Organizer
International Workshop "Advanced ESR Studies for New Frontiers in Biofunctional Spin Science and Technology
Place of Presentation
Takigawa Memorial Hall, Kobe University
Related Report
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[Presentation] 高周波数におけるS=3/2ハニカム格子反強磁性体Bi_3Mn_4O_<12>(NO_3)の強磁場ESR測定2010
Author(s)
于英杰, 張衛民, F.Elmasry, 櫻井敬博, 藤澤真士, 大久保晋, 太田仁, O.A.Sumirnova, 大西希, 東正樹, 熊田伸弘
Organizer
日本物理学会2010年秋期大会
Place of Presentation
大阪府立大学中百舌鳥キャンパス
Year and Date
2010-09-23
Related Report
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[Presentation] ボンド交替系Pb_2V_3O_9粉末試料のFIRレーザーによる強磁場ESR測定2010
Author(s)
大久保晋, 近藤健太, 日野俊一, 櫻井敬博, 太田仁, 藤澤真士, 那波和宏, 道岡千城, 加藤将樹, 和氣剛, 吉村一良
Organizer
日本物理学会2010年秋期大会
Place of Presentation
大阪府立大学中百舌鳥キャンパス
Year and Date
2010-09-23
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[Presentation] Co2(OH)3BrのESR測定2010
Author(s)
友尾水樹, 大久保晋, 藤澤真士, 櫻井敬博, 大道英二, 太田仁, 萩原雅人, 菊池彦光, 鄭旭光
Organizer
日本物理学会 第65回年次大会
Place of Presentation
岡山大学 津島キャンパス
Year and Date
2010-03-23
Related Report
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[Presentation] S=1/2低次元反強磁性体DioptaseのCu/Si-NMRIII2010
Author(s)
萩原健太, 後藤貴行, 造田法弥, 藤澤真士, 大久保晋, 櫻井敬博, 大道英二, 太田仁, 稲垣祐次, 菊池彦光, 小野俊雄, 田中秀数, 上床美也
Organizer
日本物理学会 第65回年次大会
Place of Presentation
岡山大学 津島キャンパス
Year and Date
2010-03-21
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[Presentation] s=3/2ハニカム格子反強磁性体Bi3Mn4012(NO3)の磁場中配向試料によるESR測定II2010
Author(s)
于英杰, 張衛民, F.Elmasry, 櫻井敬博, 藤澤真士, 大久保晋, 太田仁, O.A.Suminnova, 大西希, 東正樹, 熊田伸弘
Organizer
日本物理学会 第65回年次大会
Place of Presentation
岡山大学 津島キャンパス
Year and Date
2010-03-20
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[Presentation] 圧力下強磁場ESRシステム開発2009
Author(s)
櫻井敬博, 堀江友樹, 大久保晋, 太田仁, 田中秀数
Organizer
日本物理学会 2009年秋季大会
Place of Presentation
熊本大学 黒髪キャンパス
Year and Date
2009-09-28
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[Presentation] S=1/2低次元反強磁性体DioptaseのCu/Si-NMRII2009
Author(s)
萩原健太, 後藤貴行, 造田法弥, 藤澤真士, 大久保晋, 櫻井敬博, 大道英二, 太田仁, 稲垣祐次, 菊池彦光, 小野俊雄, 田中秀数, 上床美也
Organizer
日本物理学会 2009年秋季大会
Place of Presentation
熊本大学 黒髪キャンパス
Year and Date
2009-09-26
Related Report
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[Presentation] 強磁性薄膜GdNの強磁性共鳴による研究II
Author(s)
福岡洋平, 藤澤真士, 張衛民, 大久保晋, 太田仁, 吉富大明, 來山真也, 喜多隆, 和田修
Organizer
日本物理学会第66回年次大会
Place of Presentation
新潟大学(東日本大震災のため中止になったが、発表としてはWeb上で成立)(予定)
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