Quantum phase transition in the two dimensional XY model with single ion and exchange anisotropies

被引：7

作者：

Pires, A. S. T. ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, Dept Fis, BR-3012970 Belo Horizonte, MG, Brazil

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2015年 / 437卷

关键词：

XY model; Antiferromagnet; Quantum phase transitions; FERROQUADRUPOLAR PHASE; ANTIFERROMAGNET; FRUSTRATION;

D O I：

10.1016/j.physa.2015.05.114

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

I study the spin-one XY antiferromagnet with easy plane single ion and exchange anisotropies on the square lattice using the SU(3) Schwinger boson formalism. The phase diagram at zero temperature is obtained. The gap, in the disordered phase, as a function of temperature is presented. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：198 / 203

页数：6

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