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

被引：1
|
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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