Island Size and Environment Dependence of Adatom Capture: Cu/Co Islands on Ru(0001)

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.1901· OSTI ID:641675

Bartelt, M C; Schmid, A K; Hwang, R Q ^[1]; Evans, J W ^[2]

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1. Sandia National Laboratories, Livermore, California 94550 (United States)
2. Department of Mathematics and Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States)

We quantify the rate of capture by Co islands on Ru(0001) of additionally deposited Cu atoms, using scanning tunneling microscopy. The dependence of the capture rates on Co-island size is shown to reflect larger island-free areas surrounding bigger islands, a feature neglected in mean-field treatments. We also find a strong direction dependence in Cu adatom capture, reflecting the local environment of individual islands. These features are elucidated by simulations and diffusion equation analyses. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Sandia National Laboratory
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 641675
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION
COBALT
COPPER
DEPOSITION
DIFFUSION
ELECTRON MICROSCOPY
RUTHENIUM
SIZE
THIN FILMS