Phase Diagram of XY Model with Nematic Coupling on the Simple Cubic Lattice  

作　　者：吕建平 陈庆虎 

机构地区：[1]Department of Physics,China University of Mining and Technology [2]Department of Physics,Zhejiang University [3]Center for Statistical and Theoretical Condensed Matter Physics,Zhejiang Normal University

出　　处：《Communications in Theoretical Physics》2012年第1期166-168,共3页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant No. 10974180

摘　　要：Using cluster Monte Carlo method, we numerically investigate the coupling on the simple cubic lattice. We determine critical lines belong to the criticality in the XY model with nematic three-dimensional XY universality class in variable of θ （2θ） between the XY-ferromagnetic （nematic） and disordered states. Fhrthermore, the phase transition between the XY-ferromagnetic and the nematie states is found to be in the three-dimensional Ising universality class. The critical points are determined from the intersections of Binder ratios for various system sizes. With two sets of critical points obtained, we finally construct the phase diagram on the A-J plane.

关 键 词：nematic phase phase diagram scaling analysis 

分 类 号：O76[理学—晶体学]