SPIN-WAVE EXPANSION OF THE STAGGERED MAGNETIZATION OF A SQUARE-LATTICE HEISENBERG-ANTIFERROMAGNET AT T = 0

被引：36

作者：

CASTILLA, GE

CHAKRAVARTY, S

机构：

[1] Department of Physics, University of California at Los Angeles, Los Angeles, CA 90024-1547

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.43.13687

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin-wave expansion is used to compute the staggered magnetization of the square-lattice Heisenberg antiferromagnet at T = 0 to order O(1/S)2. it is found that the staggered magnetization, M, is given by M = S -0.19660 x S0 + 0 x S-1 -0.00068 x S-2 + O(S-3). The result strengthens the belief that spin-wave expansion, at T = 0, is a useful asymptotic expansion that agrees exceptionally well with recent Monte Carlo and series-expansion estimates of the staggered magnetization.

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页码：13687 / 13690

页数：4

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