Dynamic Ordering and Transverse Depinning of a Driven Elastic String in a Disordered Media

Details Dynamic Ordering and Transverse Depinning of a Driven Elastic String in a Disordered Media Dynamic Ordering and Transverse Depinning of a Driven Elastic String in a Disordered Media

2001-03-05

arxiv.org/abs/cond-mat/0103105v1

Phys. Rev. B 65, 094301 (2002)

Physics

Condensed Matter

4 pages, 4 postscript figures

Scientific paper

10.1103/PhysRevB.65.094301

We examine the dynamics of an elastic string interacting with quenched disorder driven perpendicular and parallel to the string. We show that the string is the most disordered at the depinning transition but with increasing drive partial ordering is regained. For low drives the noise power is high and we observe a 1/f^2 noise signature crossing over to a white noise character with low power at higher drives. For the parallel driven moving string there is a finite transverse critical depinning force with the depinning transition occuring by the formation of running kinks.

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