Influence of an Edge Diffusion on Island Formation and Scaling in Molecular Beam Epitaxy

Autor:	Chun W. Lee, Sang B. Lee
Rok vydání:	2003
Předmět:	Morphology (linguistics) Materials science Yield (engineering) business.industry General Physics and Astronomy Power law chemistry.chemical_compound Optics Monomer Fractal chemistry Chemical physics Physics::Atomic and Molecular Clusters Diffusion (business) business Scaling Molecular beam epitaxy
Zdroj:	Journal of the Physical Society of Japan. 72:2000-2007
ISSN:	1347-4073 0031-9015
DOI:	10.1143/jpsj.72.2000
Popis:	We investigate an influence of edge diffusion on island formation in molecular beam epitaxy. Edge diffusion not only yields compact islands but also results in small clusters such as dimers and trimers mobile. We find that both the morphology of islands and the mobility of small clusters yield nontrivial effects on the power–law behavior of the monomer and island densities and the scaling functions of the island size distributions. When dimers and trimers are stable, an influence of the morphology of islands on the power–law behavior is found to be negligible. On the other hand, when dimers and trimers are subject to diffuse, the scaling powers and the scaling functions vary depending on the degrees of the mobility for both the fractal growth and the compact growth models. The morphology of islands in this case influences the power–law behavior of only the monomer density.
Databáze:	OpenAIRE
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