自旋s=1的半无限无规场伊辛模型的临界行为

数学物理学报 ›› 1998, Vol. 18 ›› Issue (4): 433-437.

自旋s=1的半无限无规场伊辛模型的临界行为

高瞻, 徐坚宏

江南学院物理教研室无锡 214062

收稿日期:1997-06-16 修回日期:1997-11-28 出版日期:1998-12-26 发布日期:1998-12-26
基金资助:
江苏省教委资助课题

Critical Behavior at the Surface of a Semi-infinite Spin-1 Ising Model with Surface Random Field

Gao Zhan, Xu Jianhong

Jiangnan College, Jiangsu Wuxi 214062

Received:1997-06-16 Revised:1997-11-28 Online:1998-12-26 Published:1998-12-26

摘要/Abstract

摘要： 该文应用平均场重整化群方法,对s=1的半无限简立方伊辛铁磁体在表面无规场(三峰分布)存在时的表面临界行为进行了研究,得到了系统的表面相图.

关键词: 无规场, 晶场, 表面磁化, 三临界点

Abstract: In this paper, a renormalization group scheme within the framework of the mean field theory is used to investigate the critical behavior at the surface of a semi-infinite simple-cubic spin-1 Ising ferromagnet. The effects of a random field with trimodal distribution on the surface phase diagrams are obtained.

Key words: Random field, Crystal field, Surface magnetization, Tricritical point

高瞻, 徐坚宏. 自旋s=1的半无限无规场伊辛模型的临界行为[J]. 数学物理学报, 1998, 18(4): 433-437.

Gao Zhan, Xu Jianhong. Critical Behavior at the Surface of a Semi-infinite Spin-1 Ising Model with Surface Random Field[J]. Acta mathematica scientia,Series A, 1998, 18(4): 433-437.