SPIN-WAVE VELOCITY RENORMALIZATION IN THE 2-DIMENSIONAL HEISENBERG-ANTIFERROMAGNET AT ZERO TEMPERATURE

被引：60

作者：

CANALI, CM ^{[1
]}

GIRVIN, SM ^{[1
]}

WALLIN, M ^{[1
]}

机构：

[1] INDIANA UNIV,DEPT PHYS,BLOOMINGTON,IN 47405

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.45.10131

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We compute the spin-wave dispersion of the square-lattice Heisenberg antiferromagnet at T = 0 within the Dyson-Maleev formalism, to order 1/S. This allows us to calculate the spin-wave velocity renormalization factor, Z(c), to order 0(1/S2). For the S = 1/2 case, it is found that Z(c) = 1.1765 +/- 0.0002, in very good agreement with series-expansion estimates.

引用

页码：10131 / 10134

页数：4

共 17 条

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