Frequency pulling and heterodyning observed in voltage spectrum of the Fröhlich conductor NbSe3

The voltage power spectrum of NbSe3 has been studied in the upper charge-density wave (CDW) state where only one CDW exists. In the non-Ohmic regime sharp spikes appear in the spectrum. The frequency of these spikes increases monotonically with current as in the lower CDW state. The 'fine struc...

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Bibliographic Details
Published inSolid state communications Vol. 37; no. 1; pp. 25 - 31
Main Authors Ong, N.P., Gould, C.M.
Format Journal Article
LanguageEnglish
Published 01.01.1981
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Summary:The voltage power spectrum of NbSe3 has been studied in the upper charge-density wave (CDW) state where only one CDW exists. In the non-Ohmic regime sharp spikes appear in the spectrum. The frequency of these spikes increases monotonically with current as in the lower CDW state. The 'fine structure' of the spectrum is studied and evidence for frequency pulling between the modes is found. A linear coupled-mode treatment is used to model this effect. There is also evidence of heterodyning of an intrinsic (current independent) 2MHz mode. These phenomena are discussed briefly in terms of Frohlich sliding conductivity. Difficulties with the simple two-fluid model as well as models based on solid state turbulence are pointed out. 15 ref.--AA
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0038-1098
DOI:10.1016/0038-1098(81)90881-4