Surface diffusion on heterogeneous surfaces: Competition between ordering and heterogeneity effects
β Scribed by F. Nieto; C. Uebing
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 232 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0042-207X
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π SIMILAR VOLUMES
A model based on the effective medium approximation is presented which describes surface diffusivity on an energetically heterogeneous surface as a function of overall surface coverage and a heterogeneity parameter. The heterogeneity parameter is obtained independently from the equilibrium adsorptio
The kinetics of the A + A ~ 0 reaction on a correlated heterogeneous surface is studied. As a novel result it is found that the temporal behaviour of the density of A particles depends on the energetic topography of the surface when A particles are initially located preferently on the more energetic