TY - JOUR
T1 - Diffusion in a two-dimensional periodic potential
AU - Bagchi, Biman
AU - Zwanzig, Robert
AU - Cristina Marchetti, M.
PY - 1985
Y1 - 1985
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevA.31.892
DO - 10.1103/PhysRevA.31.892
M3 - Article
AN - SCOPUS:0000068475
SN - 1050-2947
VL - 31
SP - 892
EP - 896
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
ER -