Título:
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Diffusion on Solid Surface: anomalous is Normal
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Autor/a:
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Sancho, Jose Maria; Lacasta Palacio, Ana María; Lindenberg, K.; Sokolov, Igor M.; Romero, A. H.
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri |
Abstract:
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We present a numerical study of classical particles diffusing on a solid surface. The particles’ motion is modeled by an underdamped Langevin equation with ordinary thermal noise. The particle-surface interaction is described by a periodic or a random two-dimensional potential. The model leads to a rich variety of different transport regimes, some of which correspond to anomalous diffusion such as has recently been observed in experiments and Monte Carlo simulations. We show that this anomalous behavior is controlled by the friction coefficient and stress that it emerges naturally in a system described by ordinary canonical Maxwell-Boltzmann statistics. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Física -Diffusion -Surfaces (Physics) -Nonlinear systems -Nonlinear dynamics -Diffusion on surfaces -Superdiffusion -Random potentials -Sistemes no lineals -Difusió -Superfícies (Física) |
Derechos:
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Tipo de documento:
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Artículo |
Editor:
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American Physical Society
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