Mean-field theory for driven domain walls in disordered environments

Friedmar Schütze and Thomas Nattermann
Phys. Rev. B 83, 024412 – Published 25 January 2011

Abstract

We study the mean-field equation of motion for driven domain walls in random media. We discuss the two cases of an external constant as well as an oscillating driving force. Our main focus lies on the critical dynamics close to the depinning transition, which we study by analytical and numerical methods. We find power-law scaling for the velocity as well as the hysteresis loop area.

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  • Received 7 September 2010

DOI:https://doi.org/10.1103/PhysRevB.83.024412

© 2011 American Physical Society

Authors & Affiliations

Friedmar Schütze and Thomas Nattermann

  • Institut für Theoretische Physik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany

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Issue

Vol. 83, Iss. 2 — 1 January 2011

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