Mean field theory for driven domain walls in disordered environments

Details Mean field theory for driven domain walls in disordered environments Mean field theory for driven domain walls in disordered environments

2010-12-03

arxiv.org/abs/1012.0667v1

Physics

Condensed Matter

Statistical Mechanics

16 pages, 19 figures, submitted to Phys. Rev. B

Scientific paper

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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