Magnetic properties of bosonization mechanisms in low-dimensional half-spin system with bond-randomness
| Project/Area Number |
23684029
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Kagoshima University |
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Principal Investigator |
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥27,950,000 (Direct Cost: ¥21,500,000、Indirect Cost: ¥6,450,000)
Fiscal Year 2014: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
Fiscal Year 2011: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | 試料作製 / 中性子散乱 / 強磁場磁化 / 電スピン共鳴 / 複屈折 / スピンチューブ / 複屈折測定 / 電子スピン共鳴 / 強磁場磁化過程 / チューブ構造 / X線構造解析 / 強磁場磁化測定 / チューブ化合物 |
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| Outline of Final Research Achievements |
We study the ground state of IPA-Cu(ClxBr1-x)3 for 0<x<1. For x=0.95, we found that bond randomness contributes to a temperature independent broadening and blue-shift of the magnon resonance at temperatures T>12.5 K. For x=0.83, we observed some ESR branches for typical antiferromagnetic modes with biaxial anisotropy. We have analyzed the magnetization curve and the ESR excitation modes for H//b by using a two sub-lattice model and obtained good agreement between experiment and calculation. For x=0.3, 0.25, we investigated by muSR. The Fourier spectrum of electron spin fluctuation obtained by LF-muSR technique shows that there exists soft-mode toward a possible phase transition to an exotic phase such as Bose-glass.
Furthermore, we study magnetic properties of triangular spin tubes composed of CsCr1-xAxF4 and KCr1-xAxF4 (A= Al, Ga, Fe), which consisted of one-dimensional Heisenberg antiferromagnets coexisting with geometrically-frustrated spin systems with bond randomness.
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Report
(5 results)
Research Products
(81 results)
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[Journal Article] Effects of Geometrical Spin Frustration on Triangular Spin Tubes Formed in CsCrF_4 and α-KCrF_42011
Author(s)
H.Manaka, T.Etoh, Y.Honda, N.Iwashita, K.Ogata, N.Terada, T.Hisamatsu, M.Ito, Y.Narumi, A.Kondo, K Kindo, Y.Miura
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Journal Title
Journal of the Physical Society of Japan
Volume: 80
Issue: 8
Pages: 084714-084714
DOI
Related Report
Peer Reviewed
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[Presentation] (Cu,C)系超伝導層を基幹とする積層構造における界面歪効果2014
Author(s)
酒瀬川 健人, 古賀 慎一, 団 一星, 小原 幸三, 真中 浩貴, 田中 康資, 伊豫 彰, Athinarayanan Sundaresan, 常盤 和靖, 寺田 教男
Organizer
第61回応用物理学会春季学術講演会
Place of Presentation
青山大学
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[Presentation] 三角スピンチューブの不純物置換効果2011
Author(s)
森田英揮, 末吉亮太, 新村晃平, 真中浩貴, 寺田教男, 三浦陽子
Organizer
2011年応用物理学会九州支部学術講演会
Place of Presentation
鹿児島県鹿児島大学
Year and Date
2011-11-27
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