Magnetic properties of the triangular quantum spin tube [(CuCl2tachH)3Cl]Cl2 studied by NMR and magnetization

被引：6

作者：

Furukawa, Yuji ^{[1
,2
,3
]}

Sumida, Yuzuru ^{[3
]}

Kumagai, Ken-ichi ^{[3
]}

Borsa, Ferdinando ^{[1
,2
,4
]}

Nojiri, Hiroyuki ^{[5
]}

Shimizu, Yusei ^{[3
]}

Amitsuka, Hiroshi ^{[3
]}

Tenya, Ken-ichi ^{[6
]}

Koegerler, Paul ^{[1
,2
,7
]}

Cronin, Leroy ^{[8
]}

机构：

[1] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[3] Hokkaido Univ, Grad Sch Sci, Dept Phys, Sapporo, Hokkaido 0600810, Japan

[4] Univ Pavia, Dept Fis A Volta, I-27100 Pavia, Italy

[5] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[6] Shinshu Univ, Fac Educ, Dept Phys, Nagano 3808544, Japan

[7] Rhein Westfal TH Aachen, Inst Inorgan Chem, D-52074 Aachen, Germany

[8] Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland

来源：

INTERNATIONAL CONFERENCE ON FRUSTRATION IN CONDENSED MATTER (ICFCM) | 2011年 / 320卷

关键词：

DYNAMICS;

D O I：

10.1088/1742-6596/320/1/012047

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Static and dynamical properties of Cu2+ (3d(9); S = 1/2) spins in a twisted Heisenberg triangular spin tube, [(CuCl(2)tachH)(3)Cl]Cl-2, have been investigated by nuclear magnetic resonance (NMR) and magnetization measurements in the temperature range T = 0.05-300 K. Magnetization curves below 0.5 K show a clear change in slope around 5 T, attributed to a signature of 1/3 plateau in magnetization. From a systematic measurement of nuclear spin-lattice relaxation rates as a function of temperature and external field, the fluctuation frequency of Cu2+ spins is found to decrease with decreasing temperature, revealing an unusual slow spin dynamics at low temperatures.

引用

页数：6

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