Nonlinear Hall effect in K0.3MoO3 due to the sliding of charge-density waves

L. Forró, J. R. Cooper, A. Jánossy, K. Kamarás

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Abstract

Hall-effect data for a Peierls semiconductor, the blue bronze K0.3MoO3, are reported both below and above the threshold electric field for the sliding of charge-density waves (CDW). The motion of the CDW alters the Hall voltage significantly and the data are fitted to a theoretical model whereby the motion of the CDW induces a "backflow" of normal electrons which causes a reduction in the Hall voltage. However there are difficulties in accounting for the magnitude of the observed effect as well as the magnitude of the low-field Hall coefficient. Therefore it is tentatively suggested that a two-fluid model may provide a better estimate of the number of normal electrons than that given by the usual one-dimensional semiconductor picture.

Original languageEnglish
Pages (from-to)9047-9050
Number of pages4
JournalPhysical Review B
Volume34
Issue number12
DOIs
Publication statusPublished - Jan 1 1986

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ASJC Scopus subject areas

  • Condensed Matter Physics

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