Abstract
We measured reflectance spectra R(v) of oxygen deficient Y1Ba2Cu3O7−x (YBCO) films of different thickness, with critical temperatures between 85 and 87 K. Measurements were made at room temperature between 15 and 25000 cm−1. The measured R(v) have a maximum below 100 cm−1 and then decrease for v → 0. This low frequency behaviour of R(v) can be accounted for by considering a relevant extra-Drude contribution to the far infrared optical conductivity of YBCO.
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Dore, P., Paolone, A., Tatoni, S. et al. Extra-drude contribution to the far infrared conductivity oxygen deficient YBCO films. Int J Infrared Milli Waves 15, 723–738 (1994). https://doi.org/10.1007/BF02096486
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DOI: https://doi.org/10.1007/BF02096486