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Energetics of Epitaxial Monolayers Deposited on a (111) Surface of an FCC Crystal: Application to a Cu Monolayer on Au(111)

Published online by Cambridge University Press:  10 February 2011

F. R. Zypman ,
L. F. Fonseca  and
L. Blum
F. R. Zypman
Affiliation:
Department of Physics and Electronics, University of Puerto Rico, Humacao, PR 00791–4300.
L. F. Fonseca
Affiliation:
Department of Physics, University of Puerto Rico, P.O. Box 23343, San Juan, PR 00931–3343.
L. Blum
Affiliation:
Department of Physics, University of Puerto Rico, P.O. Box 23343, San Juan, PR 00931–3343.
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Abstract

We study a system in which a monolayer of atoms of one kind are deposited epitaxialy onto a (111) surface of an FCC crystal using the Tight Binding approximation. First, we obtain an analytical expression for the energy spectrum of the system. This turns out to be an interesting result from the mathematical standpoint due to its simplicity, and to the fact that no artificial boundary conditions (like periodic or vanishing) were imposed on the wave functions. All the spectral information is shown to be contained in the roots of a quadratic polynomial. Then, for Cu on Au, we study the density of states and wave function decay out from the outer layer. This is done at zero and finite voltage applied between an electrode and bulk Gold, immersed in an electrolyte. This problem is of interest in electrochemistry.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 451: Symposium P – Electrochemical Synthesis and Modification , 1996 , 109
Copyright
Copyright © Materials Research Society 1997

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References

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