1994/08/10 by Lee-Wen Chen, M. Cristina Marchetti · 35 citations
Materials Science · Mathematics · Physics and Astronomy · #Computer science #Condensed matter physics #Creep #Dynamics (music) #Material Dynamics and Properties #Materials science #Mathematics #Mechanics #Phase (matter) #Phase transition #Physics #Power law #Quantum mechanics #Rounding #Statistical physics #Stochastic processes and statistical mechanics #Theoretical and Computational Physics #Thermal #Thermal fluctuations #Thermodynamics #cond-mat
paper · pdf · doi:10.1103/physrevb.51.6296
published in Physical review. B, Condensed matter 51(10), 6296-6308 (American Physical Society) · harvmac.tex, 30 pages, including 9 figures, available upon request. SU-rm-940731
arxiv created 1994/08/10 · openalex publication_date 1995/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have studied numerically the dynamics of a one-dimensional 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 a sufficiently 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 charge-density waves. 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 S_\mathrm\ensuremath∥ decays as S_\mathrm\ensuremath∥^\mathrm\ensuremath-1\mathrm\ensuremath-\mathrm\ensuremathκ, with \ensuremathκ=0.05\ifmmode±\else\textpm\fi0.05, in agreement with recent theoretical conjectures.