Infinite-Range Quantum Dzyaloshinskii-Moriya Spin Glass Model
SHANG Yu-Min, YAO Kai-Lun
Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
Infinite-Range Quantum Dzyaloshinskii-Moriya Spin Glass Model
SHANG Yu-Min;YAO Kai-Lun
Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
关键词 ：
75.10.Nr ,
75.50.Lk ,
75.30.Gw ,
75.40.Cx
Abstract ： Based on the replica method and the imaginary time functional-integral technique, we investigate the infinite-range quantum Dzyaloshinskii-Moriya spin glass model. It is found that the quantum Dzyaloshinskii-Moriya spin glass model behaves in a Heisenberg-like manner. The specific heat has the crossover behaviour. The broad Maximum in specific heat is shifted to higher temperature with increasing applied field. These features are in good agreement with the observation of Brodale et al. [J. Magn. Magn. Matter. 31-34 (1983) 1331] The susceptibility of the system has the typical spin glass feature.
Key words ：
75.10.Nr
75.50.Lk
75.30.Gw
75.40.Cx
出版日期: 2003-11-01
:
75.10.Nr
(Spin-glass and other random models)
75.50.Lk
(Spin glasses and other random magnets)
75.30.Gw
(Magnetic anisotropy)
75.40.Cx
(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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