Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11494
Title: Diffusion of clusters down (111) aluminum islands
Authors: Bockstedte, M
Liu, SJ
Pankratov, O
Woo, CH 
Huang, H
Keywords: Cluster diffusion
Schwoebel barrier
Island
Facet
Aluminum
Issue Date: 2002
Publisher: Elsevier
Source: Computational materials science, 2002, v. 23, no. 1-4, p. 85-94 How to cite?
Journal: Computational materials science 
Abstract: The key factor determining nucleation processes and faceting in homoepitaxial growth as well as texture competition is the mobility of adatoms and small clusters across step edges and facets. Using a combination of molecular dynamics and ab initio Calculations. we investigate the mechanisms of small clusters (dimer and trimer) diffusion down the aluminum (111) surface, In this paper we report results of molecular dynamics studies. Our study shocks that the clusters dissociate at the step-edge of compact islands, As a result. the clusters diffuse down the step by an exchange mechanism with a small or medium Schwoebel barrier, The mechanism of this down-diffusion/dissociation is discussed and the corresponding energetics are calculated using the molecular statics method. We find a large anisotropy between the barriers at the two types of <110> oriented steps.
Description: Meeting of the International Union of Matierals Research Societies (IUMRS), Hong Kong, Peoples R China, 24-26 July 2000
URI: http://hdl.handle.net/10397/11494
ISSN: 0927-0256
DOI: 10.1016/S0927-0256(01)00232-4
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