Single-particle diffusion coefficient on surfaces with Ehrlich-Schwoebel barriers

被引：4

作者：

Mussawisade, K ^{[1
]}

Wichmann, T ^{[1
]}

Kehr, KW ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

来源：

SURFACE SCIENCE | 1998年 / 412-13卷

关键词：

computer simulations; models of surface kinetics; surface diffusion; stepped single-crystal surfaces;

D O I：

10.1016/S0039-6028(98)00368-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The diffusion coefficient of single particles in the presence of Ehrlich-Schwoebel barriers (ESBs) is considered. An exact expression is given for the diffusion coefficient on linear chains with disordered arrangements of the ESBs. This expression is applied to the usual ESBs, where the previous result for the ordered case is recovered, acid to a more complicated form of ESBs. The results are extended to surfaces having ESBs with uniform extension in one or both directions. All results are verified by Monte Carlo simulations. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：55 / 60

页数：6

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