Disorder-induced roughening in the three-dimensional Ising model

被引:28
作者
Alava, MJ
Duxbury, PM
机构
[1] MICHIGAN STATE UNIV,CTR FUNDAMENTAL MAT RES,E LANSING,MI 48824
[2] HELSINKI UNIV TECHNOL,PHYS LAB,FIN-02150 ESPOO,FINLAND
来源
PHYSICAL REVIEW B | 1996年 / 54卷 / 21期
关键词
D O I
10.1103/PhysRevB.54.14990
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Using an exact method, we numerically study the zero-temperature roughness of interfaces in the random bond, cubic lattice, Ising model (of size L(3), with L less than or equal to 80). Interfaces oriented along the {100} direction undergo a roughening transition from a weak disorder phase, which is almost flat, to a strong disorder phase with interface with w similar to cL(0.42) (c is a function of the disorder). For random dilution we find the roughening threshold p*=0.89+/-0.01 and c similar to p*-p for p less than or equal to p* (p is the volume fraction of present bonds). In contrast {111} interfaces are algebraically rough for all disorder.
引用
收藏
页码:14990 / 14993
页数:4
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