LONG-RANGE ORDER OF AN EXACTLY SOLVABLE MODEL OF A QUANTUM ANTIFERROMAGNET

被引：2

作者：

CHAMATI, H

TONCHEV, NS

机构：

[1] Georgy Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, Sofia

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1992年 / 174卷 / 02期

关键词：

D O I：

10.1002/pssb.2221740219

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The thermodynamics of a simple electron-spin model for the paramagnetic antiferromagnetic phase transition is discussed. The spontaneous magnetization m and the root-mean-square order parameter m0 for arbitrary temperature and band filling are obtained. For the ratio r(T, mu) = m/m0, where mu is the chemical potential, the value r(T, mu) = square-root 3 is found.

引用

收藏

页码：505 / 512

页数：8

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