HOMOEPITAXY OF SMALL AGGREGATES ON NI(111) AND PT(111) - AN EXTENDED HUCKEL STUDY

被引：4
|
作者：
CASTELLANI, NJ
LEGARE, P
机构：
[1] UNIV STRASBOURG 1,LERCSI,F-67070 STRASBOURG,FRANCE
[2] UNIV NACL SUR,CONICET,PLAPIQUI,RA-8000 BAHIA BLANCA,ARGENTINA
来源：
SURFACE SCIENCE | 1994年 / 320卷 / 1-2期
关键词：
D O I：
10.1016/0039-6028(94)00520-6
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：
A semiempirical molecular orbital study for small aggregates of Ni on Ni(111) and Pt on Pt(111) has been performed within the cluster approximation. Different adsorption sites for monatomic adsorption, and different geometrical configurations for aggregates up to four atoms, have been considered. Results suggest a very competitive morphological structure in the very early stages of homoepitaxial growth of these systems. The influence of factors as cluster size or cluster border have been analysed.
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页码：39 / 54
页数：16
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