PHASE-TRANSITIONS IN COUPLED XY-ISING SYSTEMS

被引：115

作者：

GRANATO, E ^{[1
]}

KOSTERLITZ, JM ^{[1
]}

LEE, JY ^{[1
]}

NIGHTINGALE, MP ^{[1
]}

机构：

[1] UNIV RHODE ISL,DEPT PHYS,KINGSTON,RI 02881

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.66.1090

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the critical behavior of fully frustrated XY and Josephson-junction systems by means of a coupled XY-Ising model. From Monte Carlo and transfer-matrix calculations, we find separate XY and Ising and first-order transitions, depending on the parameters. In addition, a line of continuous transitions is found, with simultaneous loss of XY and Ising order and novel critical behavior. This result is supported by Monte Carlo simulations of frustrated XY models on square and triangular lattices.

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页码：1090 / 1093

页数：4

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