Development and ordering of mounds during metal(100) homoepitaxy

Date
2002-01-01
Authors
Caspersen, K.
Layson, Anthony
Stoldt, C.
Fournée, V.
Thiel, Patricia
Evans, James
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Altmetrics
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Research Projects
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Ames Laboratory
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Mathematics
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Chemistry
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Abstract

Scanning-tunneling microscopy studies combined with atomistic modeling for Ag/Ag(100) homoepitaxy reveal complex growth behavior at 300 K: initial smooth growth up to ∼25 ML, where three-dimensional (3D) mounds develop from 2D islands; then an extended regime of mound steepening for ∼1000 ML producing unexpected rough growth; and finally an asymptotic regime with cooperative mound ordering and coalescence dynamics quite distinct from that in systems with up-down symmetry. The steepening regime is compressed upon lowering temperature, so while initial growth is rougher, asymptotic growth is actually smoother.

Description

This article is from Physical Review B 65, no. 19 (2002): 193407, doi:10.1103/PhysRevB.65.193407.

Keywords
metal, silver, atomic particle, dynamics, film, growth, model, physical phenomena, scanning tunneling microscopy, temperature
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