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Charge Density Wave Dynamics in the Blue Bronzes A0.30MoO3(A=K, Rb)

  • J. Dumas
Part of the NATO ASI Series book series (NSSB, volume 354)

Abstract

Quasi-one dimensional conductors exhibit a rich variety of response to an applied electric field, which involves many internal degrees of freedom. The depinning of the CDW occurs above a finite threshold field and gives rise to an excess conductivity, the so-called Fröhlich conductivity first reported by Monceau et al. in NbSe3 in 1976 [1]. Since this discovery, several other materials of the family of trichalcogenides and halogenated tetrachalcogenides have been shown to exhibit CDW non-linear conductivity. In a structurally different class of materials, namely the so-called blue bronzes A0.30MoO3 (A=K, Rb, T1), a CDW conductivity has also been observed [2,3] which has generated considerable renewal of interest for these materials [4]. This material was the first quasi-one dimensional oxide which shows non-linear conductivity due to CDW motion. The blue bronzes show a Peierls transition at 180K towards an incommensurate CDW state. The CDW wave vector is found smaller than 0.75b* and approaches this commensurate value when the temperature is lowered below approximately 100K [5].

Keywords

Electron Paramagnetic Resonance Electron Paramagnetic Resonance Spectrum Voltage Response Threshold Field Excess Conductivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • J. Dumas
    • 1
  1. 1.Laboratoire d’Etudes des Propriétés Electroniques des Solides, CNRSUniversité Joseph FourierGrenoble Cedex 9France

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