SURFACE DIFFUSION AND ANISOTROPIC LATERAL INTERACTIONS

Author:

MYSHLYAVTSEV A.V.1,ZHDANOV V.P.12,NORTON P.R.3

Affiliation:

1. Institute of Catalysis, Novosibirsk 630090, Russia

2. Department of Applied Physics, Chalmers University of Technology, S-412 96 Göteborg, Sweden

3. Interface Science Western, Department of Physics and Chemistry, University of Western Ontario, London, Ontario, Canada N6A 3K7, Canada

Abstract

Anisotropic lateral interactions between particles on a rectangular lattice result in anisotropy in the coverage dependence of the chemical diffusion coefficient. This effect is studied in the framework of the lattice-gas model taking into account repulsive lateral interactions in the ground state and also lateral interactions in the activated state. To calculate the diffusion coefficient, the transfer-matrix technique is employed.

Publisher

World Scientific Pub Co Pte Lt

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics

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