ADATOM MOBILITY ON VICINAL SURFACES DURING EPITAXIAL-GROWTH

被引：18

作者：

LUSE, CN ^{[1
]}

ZANGWILL, A ^{[1
]}

VVEDENSKY, DD ^{[1
]}

WILBY, MR ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,LONDON SW7 2BZ,ENGLAND

来源：

SURFACE SCIENCE | 1992年 / 274卷 / 02期

关键词：

D O I：

10.1016/0039-6028(92)90518-B

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：

We present a generalization of the Burton-Cabrera-Frank (BCF) model of step flow growth on a vicinal surface which takes exact account of island nucleation due to adatom interactions. Our basic result takes the form of a BCF-type equation where the adatom concentration is replaced by a quantity which involves the concentration of atoms in all possible bonding environments. Under conditions where islands larger than dimers can be neglected, we obtain a non-linear differential equation for the adatom concentration which has a simple analytic solution. In conjunction with Fick's law, the origin of reduced adatom mobility in the presence of island nucleation is demonstrated explicitly.

引用

页码：L535 / L540

页数：6

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