Physics – Condensed Matter
Scientific paper
1996-04-30
Physics
Condensed Matter
4pages, revtex
Scientific paper
10.1103/PhysRevLett.77.1845
We discuss the low-temperature dynamics of an elastic manifold driven through a random medium. For driving forces well below the $T=0$ depinning force, the medium advances via thermally activated hops over the energy barriers separating favorable metastable states. We show that the distribution of waiting times for these hopping processes scales as a power-law. This power-law distribution naturally yields a nonlinear glassy response for the driven medium, $v\sim\exp(-{\rm const}\times F^{-\mu})$.
Chen Lee-Wen
Marchetti Cristina M.
Vinokur Valerii M.
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