Complex conductivity of ${\mathrm{Y}}_{1-\mathrm{x}}\mathrm{P}{\mathrm{r}}_{\mathrm{x}}\mathrm{B}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_7$ thin films measured by coherent terahertz spectroscopy

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.

arXiv comment2 pages, REVTEX 3.0, figures upon request. To appear in Physica C, and as a poster @ the M^2S-HTSC conference, Grenoble, 5 July 1994

References in corpus (1)

• Kinetic Inductance and Penetration Depth of Thin Superconducting Films Measured by THz Pulse Spectroscopy