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Reconstructions and Morphological Instabilities of FCC (110)Surfaces

Published online by Cambridge University Press:  15 February 2011

J. Sun
Affiliation:
North Dakota State University, Department of Physics, Fargo, ND 58105-5566
Craig Rottman
Affiliation:
North Dakota State University, Department of Physics, Fargo, ND 58105-5566
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Abstract

We compare the ground state energy of the following structures of fcc (110) surfaces: the (1×1) flat surface, the (n×1) reconstruction (2 ≤ n < ∞), and the (∞ × 1) structure where the surface is faceted into macroscopic (111) surfaces. We map out the phase diagram using a lattice model with pair and triplet interactions. We argue that it is unlikely that any realist pair potential will give a reconstructed ground state. We also doubt that including, in addition, three body interactions will stabilize the reconstructed structure for interatomic interactions derived from the embedded atom method.

Type
Research Article
Copyright
Copyright © Materials Research Society 1991

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