The semi-infinite quantum spin-1/2 XY model

被引：0

作者：

Neto, JC ^{[1
]}

de Sousa, JR ^{[1
]}

机构：

[1] Univ Amazonas, Inst Ciencias Exatas, Dept Fis, BR-69077000 Manaus, Amazonas, Brazil

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 2001年 / 225卷 / 01期

关键词：

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The phase transition of the semi-infinite simple cubic quantum spin 1/2 anisotropic XY model is studied by the mean field renormalization group approach. The critical temperature as a function of the Delta parameter is obtained, where Delta = J(s)/J(b-1), J(s) and J(b) are the nearest-neighbor coupling constants at the surface and bulk, respectively. We have also obtained the multicritical point (Delta (c)) and crossover exponent (phi) for the Ising and isotropic XY limits with F and AF interactions.

引用

页码：223 / 227

页数：5

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