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Properties of Quantum XY Spin Glass in Longitudinal Field |
| SHANG Yu-Min;YAO Kai-Lun |
| Department of Physics, Huazhong University of Science and
Technology, Wuhan 430074
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| Cite this article: |
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SHANG Yu-Min, YAO Kai-Lun 2001 Chin. Phys. Lett. 18 595-597 |
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Abstract By using the generalized static replica symmetry approximation, the quantum XY spin-glass model in a longitudinal field is investigated. The thermodynamic quantities, spin-glass and self-interaction order parameters are calculated numerically. The local susceptibility depending on temperature has the typical spin-glass plateau characteristic; the specific heat against temperature display a crossover feature which was discovered experimentally in the CuMn sample by Brodale et al. (J. Magn. Magn. Mater. 31-34 (1983) 1331) and cusps sharper than that in the model with the Dzyaloshinskii-Moriya interaction.
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| Keywords:
75.10.Nr
75.50.Lk
75.30.Gw
75.40.Cx
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Published: 01 April 2001
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| PACS: |
75.10.Nr
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(Spin-glass and other random models)
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75.50.Lk
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(Spin glasses and other random magnets)
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75.30.Gw
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(Magnetic anisotropy)
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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