CRITICAL INDEXES FOR THE 2-DIMENSIONAL ISING-MODEL WITH NEAREST-NEIGHBOR AND NEXT-NEAREST-NEIGHBOR INTERACTIONS

被引：25

作者：

TANAKA, K

HORIGUCHI, T

MORITA, T

机构：

[1] Department of Engineering Science, Faculty of Engineering, Tohoku University, Sendai

来源：

PHYSICS LETTERS A | 1992年 / 165卷 / 03期

关键词：

D O I：

10.1016/0375-9601(92)90048-Q

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the critical behavior of the Ising model with nearest-neighbor and next-nearest-neighbor interactions on the square lattice by combining a cluster variation method and the coherent-anomaly method. We estimate the values of the critical indices-nu and gamma for several values of \J'\/J for J'< -0.5J, which show the breakdown of the universality.

引用

页码：266 / 270

页数：5

共 50 条

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