Hysteretic Depinning of Anisotropic CDW

Details Hysteretic Depinning of Anisotropic CDW Hysteretic Depinning of Anisotropic CDW

1997-08-22

arxiv.org/abs/cond-mat/9708175v1

Phys. Rev. Lett. 79, 3471 (1997)

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, Latex, with 2 ps figures

Scientific paper

10.1103/PhysRevLett.79.3471

We investigate the depinning transition in a dirty periodic medium considering a model of layered charge density waves as a prototype system. We find that depinning from strong disorder occurs via a two stage process, where, first, the pinned system experiences a continuous transition into a plastically sliding state and undergoes a second sharp hysteretic transition into a coherently moving 3D state at higher drives. In the weakly disordered system the depinning into a coherently sliding state remains continuous.

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