SELF-CONSISTENT APPROXIMATION FOR SPIN-1/2 QUANTUM HEISENBERG ANTIFERROMAGNETS

被引：12

作者：

CHU, DP ^{[1
]}

SHEN, JL ^{[1
]}

机构：

[1] CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.44.4689

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using an extended self-consistent mean-field method, we deal with the nonlinear terms of the quantum antiferromagnetic Heisenberg Hamiltonian based upon Anderson's antiferromagnetic spin-wave theory. The expressions for ground-state energy, excitation spectrum, and staggered magnetization at T = 0 are given for all dimensions in a unified picture. We also calculate the numerical results for ground-state properties, which agree well with those from Monte Carlo simulations.

引用

页码：4689 / 4692

页数：4

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