STATIC AND DYNAMICAL SPIN SUSCEPTIBILITY IN 2D ANTIFERROMAGNETIC HEISENBERG-MODEL

被引：7

作者：

ALLEGA, AM ^{[1
]}

ODASHIMA, S ^{[1
]}

MATSUMOTO, H ^{[1
]}

MANCINI, F ^{[1
]}

机构：

[1] UNIV SALERNO,DIPARTIMENTO FIS TEOR & SMSA,I-84048 BARONISSI,ITALY

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)92336-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Two-dimensional antiferromagnetic Heisenberg model is investigated by use of equations of motion and spin algebra within a mean field approximation. Development of a short range antiferromagnetic order is described by a nearest neighbor spin pair order parameter and spin excitation is expressed relatively to the nearest neighbor spins. With decreasing temperature, crossover behavior from Curie-Weiss behavior to spin liquid one is obtained as a result of increase of the spin-pair order parameter.

引用

页码：2229 / 2230

页数：2

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