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Title: Diffusion on a solid surface: anomalous is normal
Author: Sancho, José M.
Lacasta Palacio, Ana María
Lindenberg, Katja
Sokolov, Igor M., 1958-
Romero, A. H.
Keywords: Física estadística
Statistical physics
Issue Date: 2004
Publisher: American Physical Society
Abstract: 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.
Note: Reproducció digital del document proporcionada per PROLA i
It is part of: Physical Review Letters, 2004, vol. 92, núm. 25, p. 250601(1)-250601(4)
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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