Wave-vector-dependent magnetic susceptibility of classical Heisenberg rings

被引：12

作者：

Luscombe, JH

Luban, M

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 32期

关键词：

D O I：

10.1088/0953-8984/9/32/013

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We first extend previous results of GS Joyce so as to derive the exact wave-vector-dependent susceptibility chi(N)(q, T) for a ring of N classical Heisenberg spins with isotropic nearest-neighbour interactions. Our major result however is a simple, highly accurate, analytic approximation for chi(N)(q, T) which nevertheless preserves an associated sum rule over the Brillouin zone.

引用

页码：6913 / 6920

页数：8

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