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Surface Diffusion Near Phase Transitions
Abstract In this contribution, recent progresses in the understanding of surface diffusion processes within adsorbed monolayers will be reviewed. We will focus on the influence of phase transitions within the adsorbed monolayers. In most of the studies to be discussed below, lattice gas models have been used to a large extent. Unfortunately, in many cases even lattice gas models are too complicated for exact analytical treatments of the diffusion problem, especially if ad-ad interactions are taken into consideration, and only in some exceptional cases general equations for the description of surface diffusion can be derived. However, Monte Carlo simulations can easily be utilized to analyze surface diffusion processes. In recent years, the widespread availability of extremely powerful supermassive parallel computers has allowed many interesting studies on this topic. It is likely that the more recent work reviewed here will stimulate further work in this and related fields. The main emphasis of this article is on transport phenomena at or near equilibrium, i.e., on diffusion of particles within (nearly) equilibrated adsorbed monolayers on homogeneous surfaces.
Surface Diffusion Near Phase Transitions
Abstract In this contribution, recent progresses in the understanding of surface diffusion processes within adsorbed monolayers will be reviewed. We will focus on the influence of phase transitions within the adsorbed monolayers. In most of the studies to be discussed below, lattice gas models have been used to a large extent. Unfortunately, in many cases even lattice gas models are too complicated for exact analytical treatments of the diffusion problem, especially if ad-ad interactions are taken into consideration, and only in some exceptional cases general equations for the description of surface diffusion can be derived. However, Monte Carlo simulations can easily be utilized to analyze surface diffusion processes. In recent years, the widespread availability of extremely powerful supermassive parallel computers has allowed many interesting studies on this topic. It is likely that the more recent work reviewed here will stimulate further work in this and related fields. The main emphasis of this article is on transport phenomena at or near equilibrium, i.e., on diffusion of particles within (nearly) equilibrated adsorbed monolayers on homogeneous surfaces.
Surface Diffusion Near Phase Transitions
Nieto, F. (author) / Tarasenko, A. (author) / Uebing, C. (author)
2001-01-01
13 pages
Article/Chapter (Book)
Electronic Resource
English
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