https://doi.org/10.1140/epjb/e2005-00355-4
Corner wetting in a far-from-equilibrium magnetic growth model
1
IFLP, CONICET/Departamento de Física,
Facultad de Ciencias Exactas, Universidad Nacional de La Plata,
Casilla de Correo 67, La Plata (1900), Argentina
2
INIFTA,
Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, Casilla de Correo 16, Sucursal 4, La Plata (1900), Argentina
Corresponding author: a ealbano@inifta.unlp.edu.ar
Received:
5
January
2005
Revised:
8
July
2005
Published online:
17
November
2005
The irreversible growth of magnetic films is studied in three-dimensional confined geometries of size , where is the growing direction. Competing surface magnetic fields, applied to opposite corners of the growing system, lead to the observation of a localization-delocalization (weakly rounded) transition of the interface between domains of up and down spins on the planes transverse to the growing direction. This effective transition is the precursor of a true far-from-equilibrium corner wetting transition that takes place in the thermodynamic limit. The phenomenon is characterized quantitatively by drawing a magnetic field-temperature phase diagram, firstly for a confined sample of finite size, and then by extrapolating results, obtained with samples of different size, to the thermodynamic limit. The results of this work are a nonequilibrium realization of analogous phenomena recently investigated in equilibrium systems, such as corner wetting transitions in the Ising model.
PACS: 68.08.Bc – Wetting / 68.35.Rh – Phase transitions and critical phenomena / 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 75.70.Cn – Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005