Depinning and Dynamics of Systems with Competing Interactions in Quenched Disorder

Details Depinning and Dynamics of Systems with Competing Interactions in Quenched Disorder Depinning and Dynamics of Systems with Competing Interactions in Quenched Disorder

2001-11-04

arxiv.org/abs/cond-mat/0111050v1

Europhys. Lett. 61, 221 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 postscript figures

Scientific paper

10.1209/epl/i2003-00222-0

We examine the depinning and driven dynamics of a system in which there is a competition between long range Coulomb repulsive and short range attractive interactions. In the absence of disorder the system forms Wigner crystal, stripe, and clump phases as the attractive interaction is increased. With quenched disorder, these phases are fragmented and there is a finite depinning threshold. The stripe phase is the most strongly pinned and shows hysteretic transport properties. At higher drives beyond depinning, a dynamical reordering transition occurs in all the phases, which is associated with a characteristic transport signature.

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