Title

Interface Motion in Random Media at Finite Temperature

Author(s)/Creator(s)

Lee-Wen Chen, Syracuse UniversityFollow
M. Cristina Marchetti, Syracuse UniversityFollow

Document Type

Article

Date

8-10-1994

Keywords

condensed matter physics, dynamic critical phenomena

Language

English

Disciplines

Physics

Description/Abstract

We have studied numerically the dynamics of a driven elastic interface in a random medium, focusing on the thermal rounding of the depinning transition and on the behavior in the

T = 0 pinned phase. Thermal effects are quantitatively more important than expected from simple dimensional estimates. For sufficient low temperature the creep velocity at a driving force equal to the T = 0 depinning force exhibits a power-law dependence on T, in agreement with earlier theoretical and numerical predictions for CDW’s. We have also examined the dynamics in the T = 0 pinned phase resulting from slowly increasing the driving force towards threshold. The distribution of avalanche sizes Sk decays as S−1−k ,\with κ = 0.05 ± 0.05, in agreement with recent theoretical predictions.

Additional Information

This manuscript is from arXiv.org, for more information see http://arxiv.org/abs/cond-mat/9408032

Recommended Citation

arXiv:cond-mat/9408032v1

Source

harvested from arXiv.org