INVESTIGADORES
DE VIRGILIIS Andres
artículos
Título:
Study of the dynamical approach to the interface localizationdelocalization transition of the confined Ising model
Autor/es:
E. V. ALBANO; A. DE VIRGILIIS; M. MUELLER; K. BINDER
Revista:
JOURNAL OF PHYSICS CONDENSED MATTER
Referencias:
Año: 2004 vol. 16 p. 3853 - 3867
ISSN:
0953-8984
Resumen:
Confined magnetic Ising films in a
L × D
geometry (), with short-range competing magnetic
fields (h) acting at
opposite walls along the D-direction, exhibit a slightly rounded localizationdelocalization transition of the interface
between domains of different orientations that runs parallel to the walls. This transition is
the precursor of a wetting transition that occurs in the limit of infinite film thickness () at the critical curve Tw(h). For T<Tw(h)
(T>Tw(h)) such an interface is bounded (unbounded) to the walls, while right at
Tw(h)
the interface is freely fluctuating around the centre of the film.
Starting from disordered configurations, corresponding to , we quench to the wetting critical temperature and study the dynamics of the approach to
the stationary regime by means of extensive Monte Carlo simulations. It is found that for
all layers parallel to the wall (rows), the row magnetizations exhibit a peak at a time and subsequently relax to the stationary, equilibrium behaviour. The characteristic time
for such a relaxation scales as , as expected from theoretical arguments, that are discussed in detail.