Low-frequency dielectric response of the charge-density wave in orthorhombic
- 15 June 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (12) , 8325-8328
- https://doi.org/10.1103/physrevb.31.8325
Abstract
We have studied the dielectric response of the charge-density wave (CDW) in orthorhombic in the frequency range 5 Hz to 5 MHz as a function of ac signal amplitude, and at temperatures between 73 and 128 K. The CDW response is strongly dependent on signal amplitude for rms signals greater than 10% of the threshold voltage for nonlinear transport. Divergent dielectric constants at low frequency are observed for relatively large signal amplitudes. The small signal response reveals the dramatic disappearance of a low-frequency relaxation between 115 and 65 K.
Keywords
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