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New Monte Carlo Simulations to a Generalized XY Model |
| LIU Hui-Ping;SUN Yun-Zhou;YI Lin |
| Department of Physics and State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074 |
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| Cite this article: |
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LIU Hui-Ping, SUN Yun-Zhou, YI Lin 2006 Chin. Phys. Lett. 23 316-319 |
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Abstract A new combination Monte Carlo (MC) technique of the classical Metropolis algorithm and the Swendsen--Wang cluster algorithm is proposed. Upon application of the MC technique, the thermodynamic properties of a generalized two-dimensional XY model with chiral Dzyaloshinski--Moriya (DM) interactions are simulated for various DM interactions. The specific heat, order parameter and the integrated correlation time are simulated. We find that there exists a high-temperature Kosterlitz--Thouless-type phase transition related to strong DM spin chiralities. As the DM strength increases the critical temperature of the Kosterlitz--Thouless phase transition increases. It is shown that the combination algorithm is faster than the Metropolis algorithms.
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| Keywords:
07.05.Tp
21.60.Ka
67.57.Lm
75.10.Hk
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Published: 01 February 2006
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