Driven Depinning in Anisotropic Media
Condensed Matter
2009-10-22 v1
Abstract
We show that the critical behavior of a driven interface, depinned from quenched random impurities, depends on the isotropy of the medium. In anisotropic media the interface is pinned by a bounding (conducting) surface characteristic of a model of mixed diodes and resistors. Different universality classes describe depinning along a hard and a generic direction. The exponents in the latter (tilted) case are highly anisotropic, and obtained exactly by a mapping to growing surfaces. Various scaling relations are proposed in the former case which explain a number of recent numerical observations.
Cite
@article{arxiv.cond-mat/9409002,
title = {Driven Depinning in Anisotropic Media},
author = {L. -H. Tang and M. Kardar and D. Dhar},
journal= {arXiv preprint arXiv:cond-mat/9409002},
year = {2009}
}
Comments
4 pages with 2 postscript figures appended, REVTeX