INVESTIGADORES
RAMIREZ PASTOR antonio Jose
artículos
Título:
Configurational entropy of systems with non-additive lateral interactions
Autor/es:
PINTO O. A.; RAMIREZ PASTOR A. J.; NIETO F.
Revista:
PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 391 p. 6390 - 6398
ISSN:
0378-4371
Resumen:
The configurational entropy per site of a lattice gas model with
non-additive interactions between adsorbed particles for square,
triangular and honeycomb lattices is discussed in the present study. The
model used here assumes that the energy which links a certain atom with
any of its nearest-neighbors strongly depends on the state of occupancy
in the first coordination sphere of that adatom. By means of Monte
Carlo simulations in the canonical ensemble by following the algorithm
of parallel tempering and the thermodynamic integration method the
configurational entropy per site has been calculated. By analyzing the
behavior of the configurational entropy per site, the different
low-temperature-ordered phases are described. The dependency of the
critical temperature of the system as a function of characteristic
parameters of the model is established.
