Thermal rounding of the charge-density-wave depinning transition
Open Access
- 15 April 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 45 (16) , 9465-9468
- https://doi.org/10.1103/physrevb.45.9465
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 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.Keywords
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