Driven Depinning in Anisotropic Media

Lei-Han Tang, Mehran Kardar, Deepak Dhar

Research output: Contribution to journalJournal articlepeer-review

123 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)920-923
Number of pages4
JournalPhysical Review Letters
Issue number6
Publication statusPublished - 6 Feb 1995


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