Evolution of the morphology of small Co clusters grown on Au(1 1 1)

The evolution of the morphology of small clusters grown on a complex surface containing a regular network of defects is investigated in the case of Co on Au(111). On the basis of molecular dynamics calculations the existence of a critical size for the transition from mono- to bi-layer islands is inf...

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Bibliographic Details
Published in:Applied surface science 2004-03, Vol.226 (1-3), p.178-184
Main Authors: Chado, I, Goyhenex, C, Bulou, H, Bucher, J.P
Format: Article
Language:English
Subjects:
Cobalt
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Gold
Growth morphology
Molecular dynamics simulation
Physics
Reconstruction
Relaxation
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Summary:The evolution of the morphology of small clusters grown on a complex surface containing a regular network of defects is investigated in the case of Co on Au(111). On the basis of molecular dynamics calculations the existence of a critical size for the transition from mono- to bi-layer islands is inferred. Rather than strain effects, the final bilayer morphology of the deposit is conditionned by the demixtion tendency in the bulk (Co, Au) alloy, favoring Co–Co bonds against heteroatomic ones, and surface tension effects both going towards a prefered three-dimensional growth.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2003.11.019