Abstract:
We present the results of a dc transport and optical investigation of WO3 and NaxWO3 with x =0.01. Upon Na-doping we find a (Drude) metallic component in the optical conductivity, while the transport data display a crossover from an activated to a variable range hopping regime around 210 K. We suggest the possible formation of polarons (and bipolarons) and speculate that superconductivity could be induced, provided the dc percolation threshold is achieved.
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Received 28 March 2000
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Ruzicka, B., Brglez, A., Malic, B. et al. Transport and optical conductivity in . Eur. Phys. J. B 16, 205–208 (2000). https://doi.org/10.1007/s100510070219
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DOI: https://doi.org/10.1007/s100510070219