INVESTIGADORES
RAMIREZ PASTOR antonio Jose
artículos
Título:
1. Effects of surface topography on the collective diffusion of interacting adsorbed particles
Autor/es:
RODRIGUEZ, M.; PASINETTI P. M.; BULNES F.; RAMIREZ PASTOR A. J.
Revista:
PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 432 p. 156 - 166
ISSN:
0378-4371
Resumen:
Collective diffusion of particles with repulsive nearest-neighbor interactions on bivariatesurfaces is studied through Monte Carlo simulation, in the framework of the Kubo?Greentheory. Shallow and deep adsorbing sites form l × l patches distributed at random or inchessboard-like ordered domains on a two-dimensional square lattice. The influence ofthe energetic correlation and the lateral interactions on the jump and collective diffusioncoefficients are analyzed by simulating the coverage fluctuations in the grand canonicalensemble and the mean-square displacements of particles in the canonical ensemble. Thecombination of topography and lateral coupling is shown to produce interesting effectssuch as different filling regimes as well as strong effects on the coverage dependence of thetransport coefficients.
