Transitions in critical size for metal (100) homoepitaxy

For submonolayer nucleation and growth of islands during metal (100) homoepitaxy, we precisely characterize transitions, with increasing temperature, in the critical size, i, above which islands are effectively stable. For strong adatom bonding, we demonstrate universal crossover behavior from i = 1...

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Bibliographic Details
Published in:Surface science 1995-12, Vol.344 (1), p.L1193-L1199
Main Authors: Bartelt, M.C., Perkins, L.S., Evans, J.W.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Epitaxy
Exact sciences and technology
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Models of non-equilibrium phenomena
Nucleation
Physics
Surface diffusion
Vapor phase epitaxy
growth from vapor phase
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Summary:For submonolayer nucleation and growth of islands during metal (100) homoepitaxy, we precisely characterize transitions, with increasing temperature, in the critical size, i, above which islands are effectively stable. For strong adatom bonding, we demonstrate universal crossover behavior from i = 1 directly to a well-defined “ i = 3” regime where tetramers are stable, but not, e.g., pentamers. A criterion is also presented for the ultimate breakdown of “ i = 3” due to double-bond scission. Various transition temperatures and key energies are thereby determined for Ag, Cu, Fe, Ni and Pd.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(95)00930-2