Phys. Rev. B 45, 9465–9468 (1992)Thermal rounding of the charge-density-wave depinning transition
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. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.45.9465
DOI:
10.1103/PhysRevB.45.9465
PACS:
71.45.Lr, 64.60.Ht, 64.60.My, 74.60.Ge
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