## Physics

Article

5-20-1992

English

Physics

#### Description/Abstract

The rounding of the charge density wave depinning transition by thermal noise is examined. Hops by localized modes over small barriers trigger avalanches'', resulting in a creep velocity much larger than that expected from comparing thermal energies with typical barriers. For a field equal to the $T=0$ depinning field, the creep velocity is predicted to have a {\em power-law} dependence on the temperature $T$; numerical computations confirm this result. The predicted order of magnitude of the thermal rounding of the depinning transition is consistent with rounding seen in experiment.

#### Source

Harvested from Arxiv.org