Complex conductivity of Y1-xPrxBa2Cu3O7 thin films measured by coherent terahertz spectroscopy
J. O. White, R. Buhleier, S. D. Brorson, I. E. Trofimov, H. -U. Habermeier, J. Kuhl
Abstract
The complex transmission of Y1-xPrxBa2Cu3O7 single crystal thin films has been measured in the range 0.2-1.0 THz using time domain spectroscopy. The complex conductivity is calculated without using a Kramers-Kronig analysis. All of the superconducting samples show a peak in σ1(T) below Tc. The underdoped samples show a deviation from 1/(α+βT) behavior above Tc that may be linked with the onset of a spin gap.
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