Corner wetting in a far-from-equilibrium magnetic growth model

Details Corner wetting in a far-from-equilibrium magnetic growth model Corner wetting in a far-from-equilibrium magnetic growth model

2005-09-19

arxiv.org/abs/cond-mat/0509503v1

Eur. Phys. J. B 47, 563 (2005)

Physics

Condensed Matter

Statistical Mechanics

14 pages, 8 figures. EPJ style

Scientific paper

10.1140/epjb/e2005-00355-4

The irreversible growth of magnetic films is studied in three-dimensional confined geometries of size $L\times L\times M$, where $M\gg L$ 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.

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