CLUSTER-EXPANSION FOR DILUTE HEISENBERG FERROMAGNETS

被引：12

作者：

HOEPPENER, B

SOBOTTA, G

WAGNER, D

机构：

[1] Institut fur Theoretische Physik, Ruhr-Universitat Bochum

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 21期

关键词：

D O I：

10.1088/0022-3719/12/21/021

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A systematic cluster expansion is applied to dilute ferromagnets with quenched site disorder. The influence of both a spatially homogeneous and a spatially inhomogeneous effective field on the static properties of a ferromagnet are studied. Furthermore, these properties are compared in the one-, two- and three-site approximations in order to test the convergence of this expansion. Numerical calculations are presented for a simple cubic lattice with spin s=1/2.

引用

页码：4553 / 4571

页数：19

共 26 条

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