Sliding-Mode Conductivity in Nb: Observation of a Threshold Electric Field and Conduction Noise
- 21 May 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 42 (21), 1423-1426
- https://doi.org/10.1103/physrevlett.42.1423
Abstract
Two new effects associated with Fröhlich sliding-mode conductivity have been observed in Nb. First, nonlinear resistance is observed only after a well-defined threshold field is reached. Second, electric fields above the threshold result in noise in the potential difference across a current biased specimen. We interpret the threshold field as direct evidence of charge-density wave depinning and the noise as a result of charge-density wave motion.
Keywords
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