INVESTIGADORES
RAMIREZ PASTOR antonio Jose
artículos
Título:
Surface diffusion of dimers: I repulsive interactions.
Autor/es:
A. J. RAMIREZ-PASTOR; M. S. NAZZARRO; J. L. RICCARDO; V. PEREYRA
Revista:
SURFACE SCIENCE
Editorial:
Elsevier
Referencias:
Año: 1997 vol. 391 p. 267 - 277
ISSN:
0039-6028
Resumen:
We analyze the diffusion process of rigid homonuclear dimers (AA) adsorbed on a simple cubic (sc(100)) surface. The coverage
dependence of the collective diffusion coefficient is obtained by means of Monte Carlo simulations in the framework of the
Kubo Green formalism. Different microscopic diffusion mechanisms are introduced and their influence in the collective motion have
been investigated. Repulsive adsorbate adsorbate interaction, JAA, is considered in order to analyze the influence of such parameter
on the diffusion process. The behavior of the diffusion coefficient in the critical region is studied, where several ordered adsorbate
structures appear depending on the values of JAA.JAA, is considered in order to analyze the influence of such parameter
on the diffusion process. The behavior of the diffusion coefficient in the critical region is studied, where several ordered adsorbate
structures appear depending on the values of JAA.