Electro-reflectance spectra of blue bronze

R. Rai, V. Bondarenko and J. Brill ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2003, vol. 35, issue 2, 233-238

Abstract: We show that the infrared reflectance of the quasi-one dimensional charge-density-wave (CDW) conductor K 0.3 MoO 3 (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. Copyright Springer-Verlag Berlin/Heidelberg 2003

Date: 2003
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DOI: 10.1140/epjb/e2003-00273-5

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