SPIN-WAVE THEORY OF THE HALDANE GAP IN ONE-DIMENSIONAL ANTIFERROMAGNETS

被引：23

作者：

REZENDE, SM

机构：

[1] Departamento de Física, Universidade Federal de Pernambuco, 50739 Recife, Pernambuco

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.42.2589

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We point out that spin-wave theory with the additional constraint introduced by Hirsch and Tang predicts a gap in the spectrum of one-dimensional isotropic antiferromagnets at T=0, in agreement with the Haldane result for S=1. At finite temperatures the gap is comparable to the experimental values in CsNiCl3. © 1990 The American Physical Society.

引用

页码：2589 / 2590

页数：2

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