Classical-to-quantum crossover in charge-density wave creep at low temperatures
- 26 July 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 71 (4) , 605-608
- https://doi.org/10.1103/physrevlett.71.605
Abstract
It is found that the thermally activated behavior of nonlinear conduction below the threshold field in thin samples of orthorhombic vanishes at temperatures below 10 K. Current noise appearing in the low-temperature region indicates that the electric current is transferred by portions of charge which correspond to displacement of the charge-density waves (CDW) by a distance of the order of their wavelength. This phenomenon can be accounted for as a transition from thermally activated to quantum creep of the CDW.
Keywords
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