SUBMONOLAYER ISLAND GROWTH WITH ADATOM EXCHANGE

Citation
A. Zangwill et E. Kaxiras, SUBMONOLAYER ISLAND GROWTH WITH ADATOM EXCHANGE, Surface science, 326(3), 1995, pp. 483-488
Citations number
20
Categorie Soggetti
Chemistry Physical
Journal title
ISSN journal
00396028
Volume
326
Issue
3
Year of publication
1995
Pages
483 - 488
Database
ISI
SICI code
0039-6028(1995)326:3<483:SIGWAE>2.0.ZU;2-B
Abstract
Submonolayer epitaxy is studied with two simple theoretical models whe re adatom exchange with a surface atom yields a stable nucleus for isl and growth. The results are relevant to systems where surface layer in clusions are formed by alloying and where buried islands are formed in the presence of surfactants. Rate equations and Monte Carlo simulatio ns are used to study the evolution of the island size distributions. T he rate equations reproduce all of the qualitative features found in b oth the simulations and in recent experiments when the coverage-depend ent rate of adatom capture by islands is calculated self-consistently.