期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 340, 期 -, 页码 127-130出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2013.03.036
关键词
XY model; Kosterlitz-Thouless transition; Monte Carlo simulation
资金
- Natural Science Foundation of China [11204091, 11274094, 11234005]
- National Key Projects for Basic Research of China [2009CB623303]
- China Postdoctoral Science Foundation funded project [2012T50684, 20100480768]
- Priority Academic Program Development of Jiangsu Higher Education Institutions, China
The phase diagram of a ferromagnetic XY model with a nematic coupling (coupling strength x) on a triangular lattice is studied by means of Monte Carlo simulation. The algebraic-magnetic order associated with Kosterlitz-Thouless (KT) transition is observed over the whole x range. In the large x region, the phase transition from the algebraic-magnetic order to the algebraic-nematic order occurs at T-1. In addition, this phase transition can be scaled with the two-dimensional Ising critical exponents, demonstrating that the present system belongs to the universality class of Ising transition at T-1. (C) 2013 Elsevier B.V. All rights reserved.
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