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Electro-reflectance spectra of blue bronze

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Abstract.

We show that the infrared reflectance of the quasi-one dimensional charge-density-wave (CDW) conductor K0.3MoO3 (blue bronze) varies with position when a voltage greater than the CDW depinning threshold is applied. The spatial dependence and spectra associated with these changes are generally as expected from the electro-transmission [B.M. Emerling, et al., Eur. Phys. J. B 16, 295 (2000)], but there are differences which might be associated with changes in the CDW properties on the surface. We have examined the electro-reflectance spectrum associated with CDW current investigation for light polarized parallel to the conducting chains for signs of expected current-induced intragap states, and conclude that the density of any such states is at least an order of magnitude less than expected.

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Authors and Affiliations

  1. Department of Physics and Astronomy, University of Kentucky, KY 40506-0055, Lexington, USA

    R. C. Rai, V. A. Bondarenko & J. W. Brill

  2. Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 45 Prospect Nauki, 03028, Kiev, Ukraine

    V. A. Bondarenko

Authors
  1. R. C. Rai
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  2. V. A. Bondarenko
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  3. J. W. Brill
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Correspondence to J. W. Brill.

Additional information

Received: 23 June 2003, Published online: 2 October 2003

PACS:

71.45.Lr Charge-density-wave systems - 78.20.Jq Electrooptical effects - 72.15.Nj Collective modes (e.g., in one-dimensional conductors)

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Rai, R.C., Bondarenko, V.A. & Brill, J.W. Electro-reflectance spectra of blue bronze. Eur. Phys. J. B 35, 233–238 (2003). https://doi.org/10.1140/epjb/e2003-00273-5

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  • DOI: https://doi.org/10.1140/epjb/e2003-00273-5

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