Complex conductivity of $\rm Y_{1-x}Pr_xBa_2Cu_3O_7$ thin films measured by coherent terahertz spectroscopy

70506 Stuttgart; Germany); H.-U. Habermeier; I.E. Trofimov; J. Kuhl (Max-Planck-Institut f\"ur Festk\"orperforschung; J.O. White; Postfach 800665; R. Buhleier; S.D. Brorson

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Complex conductivity of rm Y_(1-x)Pr_xBa₂Cu₃O₇ thin films measured by coherent terahertz spectroscopy

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arxiv cond-mat/9406123 v1 pith:GXPSY2PP submitted 1994-06-30 cond-mat

Complex conductivity of $\rm Y_{1-x}Pr_xBa_2Cu_3O_7$ thin films measured by coherent terahertz spectroscopy

J.O. White , R. Buhleier , S.D. Brorson , I.E. Trofimov , H.-U. Habermeier , J. Kuhl (Max-Planck-Institut f\"ur Festk\"orperforschung , Postfach 800665 , 70506 Stuttgart

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abstract

The complex transmission of Y_{1-x}Pr_xBa_2Cu_3O_7 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 $\sigma_1(T)$ below $T_c$. The underdoped samples show a deviation from $1/(\alpha+\beta T)$ behavior above $T_c$ that may be linked with the onset of a spin gap.

Complex conductivity of $\rm Y_{1-x}Pr_xBa_2Cu_3O_7$ thin films measured by coherent terahertz spectroscopy

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