Incommensuration Effects and Dynamics in Vortex Chains

Details Incommensuration Effects and Dynamics in Vortex Chains Incommensuration Effects and Dynamics in Vortex Chains

2002-04-18

arxiv.org/abs/cond-mat/0204418v1

Phys. Rev. B 66, 172504 (2002)

Physics

Condensed Matter

Superconductivity

4 pages, 4 postscript figures

Scientific paper

10.1103/PhysRevB.66.172504

We examine the motion of one-dimensional (1D) vortex matter embedded in a 2D vortex system with weak pinning using numerical simulations. We confirm the conjecture of Matsuda et al. [Science 294, 2136 (2001)] that the onset of the temperature induced motion of the chain is due to an incommensuration effect of the chain with the periodic potential created by the bulk vortices. In addition, under an applied driving force we find a two stage depinning transition, where the initial depinning of the vortex chain occurs through soliton like pulses. When an ac drive is added to the dc drive, we observe phase locking of the moving vortex chain.

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