IFLYSIB   05383
INSTITUTO DE FISICA DE LIQUIDOS Y SISTEMAS BIOLOGICOS
Unidad Ejecutora - UE
artículos
Título:
Critical and TricriticalWetting in the Two-Dimensional Blume?Capel model
Autor/es:
EZEQUIEL V ALBANO; K BINDER
Revista:
JOURNAL OF STATISTICAL PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014 vol. 157 p. 436 - 455
ISSN:
0022-4715
Resumen:
The two-dimensional Blume?Capel model with free surfaces where a surface field TeX acts and the ?crystal field? (controlling the density of the vacancies) takes a value TeX different from the value TeX in the bulk, is studied by Monte Carlo methods. Using a recently developed finite size scaling method that studies thin films in a TeX geometry with antisymmetric surface fields TeX and keeps a generalized aspect ratio TeX constant, surface phase diagrams are computed for several typical choices of the parameters. It is shown that both second order and first order wetting transitions occur, separated by tricritical wetting behavior. The special role of vacancies near the surface is investigated in detail.