Electrodynamics of high-temperature superconductors investigated with coherent terahertz pulse spectroscopy

• DOI: 10.1364/josab.13.001979
• Publication Date: 2008-03-20T19:07:16Z
• Authors: S. D. Brorson; R. Buhleier; I. E. Trofimov; J. O. White; Ch. Ludwig; F. F. Balakirev; H.-U. Habermeier; J. Kuhl
• Keywords: Atmospheric temperature range

Recent experimental investigations of the electrodynamic properties high-temperature superconductors in terahertz regime are reviewed. Transmission measurements were performed with use coherent pulse spectroscopy, which enables us to extract directly frequency-dependent complex conductivity σ1+iσ2. Investigations both pure YBa2Cu3O7-δ and related alloy Y1-xPrxBa2Cu3O7-δ conducted over a temperature range from 300 K down 10 K. From these we can temperature-dependent London penetration depth λL(T), plasma frequency ωp, quasi-particle scattering time τ(T). The implications our for contemporary theories high-Tc superconductivity discussed.