Journal of Low Temperature Physics

, Volume 105, Issue 3–4, pp 785–790 | Cite as

Studies of the residual absorption of a Bi2Sr2CaCu2O8+δ single crystal at THz frequencies

  • H. S. Barowski
  • A. Arnold
  • M. Prenninger
  • R. G. Buckley
  • K. F. Renk
Optical Properties

Abstract

We measured the residual absorption of a Bi2Sr2 CaCu2 O8+δ single crystal at low temperature in the frequency range between 0.6 THz and 4.2 THz using a new method, photothermal interference spectroscopy. By combining with reflectivity data obtained with a Fourier-transform IR spectrometer (frequency range: 3 THz to 100 THz) we have calculated the dynamical conductivity using a Kramers-Kronig-transformation. The results are compared with calculations of the far infrared conductivity and show qualitative features expected for a superconductor with nodes in the gap.

PACS numbers

74.25.Gz optical properties 74.72.Hs Bi-based compounds 
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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • H. S. Barowski
    • 1
  • A. Arnold
    • 1
  • M. Prenninger
    • 1
  • R. G. Buckley
    • 1
    • 2
  • K. F. Renk
    • 1
  1. 1.Institut für Angewandte und Experimentelle PhysikUniversität RegensburgRegensburgGermany
  2. 2.New Zealand Institut for Industrial ResearchLower HuttNew Zealand

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