NMR and mu-SR study on the critical phenomena in the Bose-glass phase with Tc=0
Project/Area Number |
21540344
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | Sophia University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
SUZUKI Takao 国際基督教大学, アーツ・サイエンス研究科, 研究員 (40327862)
NAKAMURA Tota 芝浦工業大学, 工学部, 教授 (50280871)
|
Project Period (FY) |
2009 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
|
Keywords | ボースグラス / NMR / μSR / 量子スピン系 / 量子スピン / スピンギャップ / 不純物誘起磁気転移 |
Research Abstract |
(CH_3)_2CHNH_3Cu(Cl_xBr_<1-x>)_3 abbreviated IPACu(Cl_xBr_<1-x>)_3 is a mixed system of spin-gap compounds IPACuCl_3 and IPACuBr_3. This mixed system is reported by macroscopic measurements to show a magnetic order when the value of x is between the quantum critical points(QCPs) 0.44 and 0.87. We have investigated microscopically the ground state of the samples x=0.40, 0.45 and 0.50 which are located near the QCP of xc=0.44, by Muon Spin Relaxation(μSR) and NMR measurements. For x=0.40, mSR measurements in zero and longitudinal fields have shown that the spin fluctuation shows a significant slowing down with decreasing temperature, although the magnetic order does not appear down to T=15 mK, indicating that the ground state is an exotic one rather than a gapped one. For x=0.45 and 0.50, mSR and NMR measurements do not show any magnetic order at low temperatures, indicating that the QCP is larger than the reported value of x_c=0.44.
|
Report
(4 results)
Research Products
(73 results)
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[Journal Article] NMR study on field-induced charge anomaly in CU_3MO_2O_92012
Author(s)
K.Misoka, H.Kuroe, D.Doi, T.Hamasaki, T.Sekine, T.Goto, M.Hase, K.Oka, T.Ito, H.Eisaki, T.Sasaki
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Journal Title
J.Phys. : Conf.Ser.
Volume: (In press)
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Peer Reviewed
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[Journal Article] ^<63/65> Cu-and^<35/37> Cl-NMR Studies of Triplet Localization in the Quantum Spin System NH_4CuCl_32009
Author(s)
H. Inoue, S. Tani, S. Hosoya, K. Inokuchi, T. Fujiwara, T. Saito, T. Suzuki, A. Oosawa, T. Goto, M. Fujisawa, H. Tanaka, T. Sasaki, S. Awaji, K. Watanabe, N. Kobayashi
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Journal Title
Phys. Rev
Volume: B79
Issue: 17
Pages: 174418-174418
DOI
Related Report
Peer Reviewed
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[Journal Article] ^<63/65>Cu^- and ^<35/37>Cl-NMR Studies of Triplet Localization in the Quantum Spin System NH_4CUCl_32009
Author(s)
H.Inoue, S.Tani, S.Hosoya, K.Inokuchi, T.Fujiwara, T.Saito, T.Suzuki, A.Oosawa, T.Goto, M.Fujisawa, H.Tanaka, T.Sasaki, S.Awaji, K.Watanabe, N.Kobayashi
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Journal Title
Related Report
Peer Reviewed
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[Journal Article] NMR study on field-induced charge anomaly in Cu_3Mo_2O_9
Author(s)
K. Misoka, H. Kuroe, D. Doi, T. Hamasaki, T. Sekine, T. Goto, M. Hase, K. Oka, T. Ito, H. Eisaki, T. Sasaki
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Journal Title
J. Phys.: Conf
Volume: (in press)
Pages: 4-4
Related Report
Peer Reviewed
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[Presentation] 25aAF-11一次元鎖とダイマーからなる磁性Cu_3Mo_2O_9のCu-NMR IV2012
Author(s)
晦日慶太, 土井憲一, 浜崎智彰, 黒江晴彦, 後藤貴行, 関根智幸, 佐々木孝彦, 長谷正司, 岡邦彦, 伊藤利充, 永崎洋
Organizer
物理学会年次大会
Place of Presentation
関西学院大学
Year and Date
2012-03-24
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[Presentation] 24aAF-3,^<11> B-NMR測定で見たShastry-Sutherland系TbB_4におけるメタ磁性II2012
Author(s)
武藤知輝, 小林慶亮, 後藤貴行, 大沢明, 吉居俊輔, 佐々木孝彦, 小林典男, 道村真司, 伊賀文俊, 高畠敏郎
Organizer
物理学会年次大会
Place of Presentation
関西学院大学
Related Report
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[Presentation] 11B-NMR study on Shastry-Sutherland system TbB42011
Author(s)
T. Muto, K. Kobayashi, T. Goto, A. Oosawa, S. Yoshii, T. Sasaki, N. Kobayashi, S. Michimura, F. Iga, and T. Takahata
Organizer
26th International Conference on Low Temperature Physics
Place of Presentation
Beijing, China
Related Report
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[Presentation] Cu-NMR study on dimer-chain complex quantum spin system Cu3Mo2 092011
Author(s)
K. Misoka, K. Doi, T. Hamasaki, H. Kuroe, T. Goto, T. Sekine, T. Sasaki, M. Hase, K. Oka, T. Ito, and H. Eisaki
Organizer
26th International Conference on Low Temperature Physics
Place of Presentation
Beijing, China
Related Report
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[Presentation] Cu-NMR study on dimer-chain complex quantum spin system Cu3Mo2O92011
Author(s)
K.Misoka, K.Doi, T.Hamasaki, H.Kuroe, T.Goto, T.Sekine, T.Sasaki, M.Hase, K.Oka, T.Ito, H.Eisaki
Organizer
26th International Conference on Low Temperature Physics
Place of Presentation
Beijing, China
Related Report
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