Island size and environment dependence of adatom capture: Cu/Co islands on Ru(0001)

被引：2

作者：

Bartelt, MC ^{[1
]}

Evans, JW ^{[1
]}

Schmid, AK ^{[1
]}

Hwang, RQ ^{[1
]}

机构：

[1] Sandia Natl Labs, Livermore, CA 94550 USA

来源：

MECHANISMS AND PRINCIPLES OF EPITAXIAL GROWTH IN METALLIC SYSTEMS | 1998年 / 528卷

关键词：

D O I：

10.1557/PROC-528-253

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 rate of capture by stable Co islands on Ru(0001) of additionally deposited Gu atoms is quantified using scanning tunneling microscopy, kinetic Monte Carlo simulations, and diffusion equation analyses. We find strong dependence of the capture rates on Go-island size, larger islands showing larger capture rates, qualitatively distinct from self-consistent mean-field predictions. The observed size dependence is shown to reflect larger island-free areas surrounding bigger islands, i.e., a strong correlation between island sizes and separations neglected in mean-field treatments.

引用

页码：253 / 260

页数：8