MEAN-FIELD RENORMALIZATION-GROUP APPROACHES TO THE SURFACE ON A SEMIINFINITE ISING-MODEL WITH A RANDOM SURFACE FIELD

被引：3
|
作者：
SUN, G [1 ]
机构：
[1] CHINA CTR ADV SCI & TECHNOL,WORLD LAB,CTR THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 06期
关键词：
D O I：
10.1103/PhysRevB.51.3637
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the critical behavior of the surface on a semi-infinite simple-cubic-lattice Ising model with a bimodal random surface field by a large-cell mean-field renormalization-group method. Our results show that a surface ferromagnetic phase exists at weak random fields above the bulk critical temperature, and no signs of the tricritical point are found until the surface critical temperature decreases to that of the bulk. © 1995 The American Physical Society.
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页码：3637 / 3639
页数：3
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