Depinning and Creep Motion in Glass States of Flux Lines

Meng-Bo Luo and Xiao Hu
Phys. Rev. Lett. 98, 267002 – Published 26 June 2007

Abstract

Using dynamical computer simulation, we investigate vortex matter in glass states. A genuine continuous depinning transition is observed at zero temperature, which also governs the low-temperature creep motion. With the notion of scaling, we evaluate in high accuracy critical exponents and scaling functions; we observe a non-Arrhenius creep motion for weak collective pinning where the Bragg glass is stabilized at equilibrium, while for strong pinning, the well-known Arrhenius law is recovered. In both cases, a sharp crossover takes place between depinning and creep at low temperatures.

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  • Received 2 December 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.267002

©2007 American Physical Society

Authors & Affiliations

Meng-Bo Luo1,2 and Xiao Hu1

  • 1Computational Materials Science Center, National Institute for Materials Science, Tsukuba 305-0047, Japan
  • 2Department of Physics, Zhejiang University, Hangzhou 310027, China

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Issue

Vol. 98, Iss. 26 — 29 June 2007

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