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Early Homoepitaxy of Au and pt (100) with Surface-Embedded-Atom Potentials

Published online by Cambridge University Press:  25 February 2011

Michael I. Haftel  and
Mervine Rosen
Michael I. Haftel
Affiliation:
Code 6651, Naval Research Laboratory, Washington, DC. 20375–5000
Mervine Rosen
Affiliation:
Code 6651, Naval Research Laboratory, Washington, DC. 20375–5000
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Abstract

Using embedded atom potentials fit to both bulk and surface properties, we explore the submonolayer vapor deposition of Au and Pt onto reconstructed (100) surfaces with the MD code DAMSEL. The surface geometries are determined by computational annealing over .6 ns. Surface reconstruction has a strong influence on the effects of adatoms. In Au and Pt the deposited atoms are absorbed into the surface and surface structures form by atomic replacement sequences and collective motion over the surface and substrate. On Au the reconstructed corrugated surface evolves into one characterized by two-dimensional mounds as coverage is increased. On reconstructed Pt, which exhibits alternately quasihexagonal and bulk-like regions, adatoms initially form strings above the bulk-like regions parallel to the (110] corrugation rows. At about .5 monolayer coverage the quasihexagonal structure of the top substrate layer transitions to a bulk-like structure in both Au and Pt

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 280: Symposium B – Evolution of Surface and Thin Film Microstructure , 1992 , 69
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

Haftel, M. I. in Structure and Properties of Interfaces and Materials, edited by Clark, William A.T., Dahmen, Ulrich, and Briant, Clyde L. (Mater. Res. Soc. Proc. 238, 1992) pp. 229–234 Google Scholar
2. Daw, M.S. and Baskes, M.I., Phys. Rev. B29, 6443 (1984).CrossRefGoogle Scholar
3. Van Hove, M.A. et. al., Surf. Sci. 103, 189 (1981).Google Scholar
4. Gao, Q.J. and Tsong, T.T., Phys. Rev. B36, 2547 (1987).Google Scholar
5. Haftel, M.I., Andreadis, T.D., Lill, J.V., and Eridon, J.M., Phys. Rev. B42, 11540 (1990).Google Scholar