Experiemental studies of 1D quantum magnets with competing interactions
| Project/Area Number |
23540389
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | University of Fukui |
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Principal Investigator |
KIKUCHI Hikomitsu 福井大学, 工学(系)研究科(研究院), 教授 (50234191)
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| Co-Investigator(Renkei-kenkyūsha) |
FUJII Yutaka 福井大学, 遠赤外領域開発研究センター, 准教授 (40334809)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 量子スピン磁性体 / 反強磁性 / 磁化 / スピンフラストレーション / 反強磁性体 / 量子スピン系 / 巨大磁気抵抗効果 / 磁性体 |
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| Research Abstract |
One dimensional quantum antiferromagets with competing interactions are expected to have novel magnetic properties. In this study, the diamond chain, triple-chain and zigzag chain model compounds were investigated. The magnetization curve of Cu3(A)2(OH)2(H2O)4, a diamond chain model compound, showed an anomaly related to the 1/3 magnetic plateau. We studied antlerite and szenicsite, actual compound for the triple-chain model. The magnetic phase diagram of antlerite is very complicated, while szenicsite has no long range magnetic order . Although crystal structures of both compounds are similar, their magnetic properties are quite different each other. It is suggested that a quantum phase transition could occur in the ground state of the triple-chain model as varying ratios among magnetic interactions. NaCr2O4, a zigzag chain oxide, was found to have the colossal magnetic resistance (CMR) effect. The mechanism of the CMR effect was discussed in terms of the spin frustration effect.
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Report
(4 results)
Research Products
(61 results)
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[Presentation] High-field ESR Measurements of S = 1/2 Kagome Magnet [Cu3(CO3)2(bpe)3]・2ClO42014
Author(s)
H. Kikuchi, H. Nakata, Y. Fujii, S. Okubo, K. Takamoto, N. Takahashi, W. Zhang, T. Sakurai, T. Ueno, H. Ohta, T. Taniguchi
Organizer
The 5th International Workshop on Far Infrared technologies
Place of Presentation
福井大学
Related Report
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[Presentation] THz ESR study of multiferroic material CuO under pulsed magnetic field2012
Author(s)
S. Okubo, T. Kobayashi, W. Zhang,C. Yokoyama, X.G. Zheng, S. Nishihara, K. Inoue, M. Fujisawa, H. Kikuchi, E. Matsuoka H. Sugawara
Organizer
2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Place of Presentation
Wollongong, Australia
Related Report
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[Presentation] 希薄ドープSi:Pの極低温・強磁場中でのスピンダイナミクス2012
Author(s)
藤井 裕, 光藤 誠太郎, 水崎 隆雄, 田中 俊大, 菊池 彦光, 上野 智弘, 松原 明, 福田 昭, Soonchil Lee, SangGap Lee, Minchan Gwak, Sergey Vasiliev
Organizer
日本物理学会2012年秋季大会
Place of Presentation
横浜国立大学
Related Report
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[Presentation] 希薄ドープSi:Pの動的核偏極と核スピン偏極コントロール2012
Author(s)
藤井 裕, 光藤 誠太郎, 水崎 隆雄, 田中 俊大, 菊池 彦光, 上野 智弘, 松原 明, 福田 昭, SangGap Lee, Minchan Gwak, Soonchil Lee, Sergey Vasiliev
Organizer
第51回電子スピンサイエンス学会年会
Place of Presentation
札幌
Related Report
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[Presentation] Cs3V2Cl9の逐次相転移2012
Author(s)
田中 貴士, 菊池 彦光, 藤井 裕, 藤澤 真士, 萩原 雅人, 益田 隆嗣, 松尾 晶, 金道 浩一
Organizer
2012年度日本物理学会北陸支部定例学術講演会
Place of Presentation
金沢
Related Report
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