CHIRAL ORDERS IN THE 2-DIMENSIONAL HEISENBERG-MODEL

被引：1

作者：

KAWARABAYASHI, T

SUZUKI, M

机构：

[1] Department of Physics, Faculty of Science, University of Tokyo, Bunkyo-ku, Tokyo, 113

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷

关键词：

D O I：

10.1016/0304-8853(92)90427-P

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is proved using Bogoliubov's inequality that no vector chiral order appears at finite temperatures in the two-dimensional antiferromagnetic Heisenberg model with short-range interaction. The proof can be extended and is applicable to a wide class of order parameters. Scalar chiral orders in the Heisenberg model with frustration are also investigated using the super-effective field theory. The numerical results show that correlations between local chiral orders are weak. This suggests that no chiral phase transition takes place in this case.

引用

页码：929 / 930

页数：2