Diffusion in a two-dimensional periodic potential

Biman Bagchi, Robert Zwanzig, M. Cristina Marchetti

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17 Scopus citations


We report a numerical study of the self-diffusion of a single-point particle in a two-dimensional periodic potential of triangular symmetry. The self-diffusion coefficient is obtained via computer simulations for several values of the particle energy. We find that the self-diffusion process is complicated due to the existence of correlated motions involving two or more cells. A random-walk model which takes into account the effects of correlated motions involving only the nearest-neighbor cells is constructed, and compared with the experimental results.

Original languageEnglish (US)
Pages (from-to)892-896
Number of pages5
JournalPhysical Review A
Issue number2
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Bagchi, B., Zwanzig, R., & Cristina Marchetti, M. (1985). Diffusion in a two-dimensional periodic potential. Physical Review A, 31(2), 892-896. https://doi.org/10.1103/PhysRevA.31.892