The phase structure of the antiferromagnetic Ising model in the presence of frustrations

被引：18

作者：

Akheyan, AZ ^{[1
]}

Ananikian, NS ^{[1
]}

Dallakian, SK ^{[1
]}

机构：

[1] Yerevan Phys Inst, Dept Theoret Phys, Yerevan 375036, Armenia

来源：

PHYSICS LETTERS A | 1998年 / 242卷 / 1-2期

关键词：

D O I：

10.1016/S0375-9601(98)00129-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The antiferromagnetic Ising model in a magnetic field is considered on the Husimi tree. Using an iteration technique we draw the plots of magnetization versus external field for different temperatures and construct the resulting phase diagram. We show that frustration effects essentially change critical properties. The model exhibits three distinct critical regions, including a re-entrant phase structure and a Griffiths singularity. (C) 1998 Elsevier Science B.V.

引用

页码：111 / 114

页数：4

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