Phase transitions in the random field Ising model in the presence of a transverse field

被引：10

作者：

Dutta, A ^{[1
]}

Chakrabarti, BK ^{[1
]}

Stinchcombe, RB ^{[1
]}

机构：

[1] DEPT PHYS,OXFORD OX1 3NP,ENGLAND

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1996年 / 29卷 / 17期

关键词：

D O I：

10.1088/0305-4470/29/17/007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the phase transition behaviour of the random field Ising model in the presence of a transverse (or tunnelling) field. The mean field phase diagram has been studied in detail, and in particular the nature of the transition induced by the tunnelling (transverse) field at zero temperature. A modified hyperscaling relation for the zero-temperature transition has been derived using the Suzuki-Trotter formalism and a modified 'Harris criterion'. A mapping of the model to a randomly diluted antiferromagnetic Ising model in uniform longitudinal and transverse field is also given.

引用

页码：5285 / 5296

页数：12

共 26 条

[1] TRICRITICAL POINTS IN SYSTEMS WITH RANDOM FIELDS [J].