GROWTH OF INTERFACES WITH STRONG QUENCHED DISORDER - COLUMNAR MEDIA

被引：8
|
作者：
LOPEZ, JM [1 ]
RODRIGUEZ, MA [1 ]
机构：
[1] UNIV CANTABRIA,DEPT FIS MODERNA,E-39005 SANTANDER,SPAIN
来源：
PHYSICAL REVIEW E | 1995年 / 52卷 / 06期
关键词：
D O I：
10.1103/PhysRevE.52.6442
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The growth of interfaces through columnar media is analyzed using a simple two-dimensional model in which the pinning force and the diffusivity are modeled by random quenched fields. The characteristic roughness exponents chi and beta are analytically obtained in agreement with simulations. It is shown how disorder in the diffusivity, controlled by a parameter alpha < 1, strongly affects the scaling of the interface. Disorder-dependent exponents beta = (3 - alpha)/[2(2 - alpha)] and chi = (3 - alpha)/[2(1 - alpha)] are exactly calculated.
引用
收藏
页码：6442 / 6447
页数：6
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