Título:
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Modelization of surface diffusion of a molecular dimer
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Autor/a:
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Romero, A. H.; Lacasta Palacio, Ana María; Sancho, José M.
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Otros autores:
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Universitat de Barcelona |
Abstract:
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A simple model for a dimer molecular diffusion on a crystalline surface, as a function of temperature, is presented. The dimer is formed by two particles coupled by a quadratic potential. The dimer diffusion is modeled by an overdamped Langevin equation in the presence of a two-dimensional periodic potential. Numerical simulation¿s results exhibit some dynamical properties observed, for example, in Si2 diffusion on a silicon [100] surface. They can be used to predict the value of the effective friction parameter. Comparison between our model and experimental measurements is presented. |
Materia(s):
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-Física estadística -Termodinàmica -Sistemes dinàmics diferenciables -Matèria condensada -Statistical physics -Thermodynamics -Differentiable dynamical systems -Condensed matter |
Derechos:
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(c) The American Physical Society, 2004
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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The American Physical Society
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Compartir:
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