Danani, Andrea and Ferrando, Riccardo and Scalas, Enrico and Torri, Massimo (1998) Collective surface diffusion on a triangular lattice in presence of ordered phases. Surface science, 402. pp. 281-285. ISSN 0039-6028
Full text not available from this repository.Abstract
Diffusion is studied in a two-dimensional gas of triangular symmetry with repulsive interactions. The collective diffusion coefficient, Dc, is calculated as the ratio of the average jump rate and the zero-wave-vector static structure factor (Darken approximation). The dependence of Dc on coverage, θ, is studied in both the disordered and ordered regions of the phase diagram. It is shown that, around the coverages of the perfect ordered phases (θ=1/3 and 2/3), Dc changes of orders of magnitude in tiny θ ranges.
| Item Type: | Scientific journal article, Newspaper article or Magazine article |
|---|---|
| Subjects: | Physical sciences > Physics Physical sciences > Physics > Computational physics |
| Department/unit: | Dipartimento tecnologie innovative > Istituto di ingegneria meccanica e tecnologia dei materiali |
| Depositing User: | Andrea Danani |
| Date Deposited: | 09 Mar 2015 06:46 |
| Last Modified: | 08 Jul 2016 09:34 |
| URI: | http://repository.supsi.ch/id/eprint/6222 |
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