Diffusion in a two-dimensional periodic potential

Biman Bagchi, Robert Zwanzig, M. Cristina Marchetti

Research output: Contribution to journalArticlepeer-review

21 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 - 1985
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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