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Open Access item Two-bath model for activated surface diffusion of interacting adsorbates

Authors:Martínez Casado, R.
Sanz, Ángel S.
Rojas Lorenzo, G.
Miret-Artés, Salvador
Issue Date:4-Feb-2010
Publisher:American Institute of Physics
Citation:Journal of Chemical Physics 132(5): 054704 (2010)
Abstract:The diffusion and low vibrational motions of adsorbates on surfaces can be well described by a purely stochastic model, the so-called interacting single adsorbate model, for low-moderate coverages (0<0.12). Within this model, the effects of thermal surface phonons and adsorbate-adsorbate collisions are accounted for by two uncorrelated noise functions, which arise in a natural way from a two-bath model based on a generalization of the one-bath Caldeira–Leggett Hamiltonian. As an illustration, the model is applied to the diffusion of Na atoms on a Cu(001) surface with different coverages.
Description:7 pages, 3 figures.
Publisher version (URL):http://dx.doi.org/10.1063/1.3299729
Appears in Collections:(CFMAC-IFF) Artículos

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