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Strong-Pinning Effects in Low-Temperature Creep: Charge-Density Waves in TaS_3

S. V. Zaitsev-Zotov·G. Remenyi·P. Monceau
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Abstract

Nonlinear conduction in the quasi-one dimensional conductor o-TaS_3 has been studied in the low-temperature region down to 30 mK. It was found that at temperatures below a few Kelvins the current-voltage (I-V) characteristics consist of several branches. The temperature evolution of the I-V curve proceeds through sequential freezing-out of the branches. The origin of each branch is attributed to a particular strong pinning impurity type. Similar behavior is expected for other physical systems with collective transport (spin-density waves, Wigner crystals, vortex lattices in type-II superconductors etc.) in the presence of strong pinning centers.

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S. V. Zaitsev-Zotov, G. Remenyi, P. Monceau. 1996-12-30. Strong-Pinning Effects in Low-Temperature Creep: Charge-Density Waves in TaS_3. https://doi.org/10.1103/physrevlett.78.1098

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