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Collective surface diffusion on a triangular lattice in presence of ordered phases

journal contribution
posted on 2023-06-08, 18:28 authored by A Danani, R Ferrando, Enrico Scalas, M Torri
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, ?, 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 (?=1/3 and 2/3), Dc changes of orders of magnitude in tiny ? ranges.

History

Publication status

  • Published

Journal

Surface Science

ISSN

0039-6028

Publisher

Elsevier

Volume

402-4

Page range

281-285

Department affiliated with

  • Mathematics Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2014-10-02

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