Spatiotemporal Patterns in Ultraslow Domain Wall Creep Dynamics.

  title={Spatiotemporal Patterns in Ultraslow Domain Wall Creep Dynamics.},
  author={Ezequiel Ferrero and Laura Foini and Thierry Giamarchi and Alejandro B. Kolton and Alberto Rosso},
  journal={Physical review letters},
  volume={118 14},
In the presence of impurities, ferromagnetic and ferroelectric domain walls slide only above a finite external field. Close to this depinning threshold, they proceed by large and abrupt jumps called avalanches, while, at much smaller fields, these interfaces creep by thermal activation. In this Letter, we develop a novel numerical technique that captures the ultraslow creep regime over huge time scales. We point out the existence of activated events that involve collective reorganizations… 

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