Infrared properties of YBa2Cu3O7-δ

T. Timusk, D. A. Bonn, J. E. Greedan, C. V. Stager, J. D. Garrett, A. H. O'Reilly, M. Reedyk, K. Kamara´s, C. D. Porter, S. L. Herr, D. B. Tanner

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18 Citations (Scopus)


We review recent experimental data on the infrared properties of YBa2Cu3O7-δ ceramics and single crystals. Kramers-Kronig analysis shows that the normal state far-infrared optical conductivity is dominated by a Drude response from free carriers with a plasma frequency of the order of 1.0 eV and a relaxation rate of 0.37 eV (300 cm-1 at 100 K. A strong mid-infrared band centered between 0.2 and 0.5 eV is seen in all the samples. Below the superconducting transition temperatures the far-infrared conductivity is depressed below 400 cm-1 but this is not a true energy gap since there remains, even in the best oriented crystal samples, a residual absorption.

Original languageEnglish
Pages (from-to)1744-1747
Number of pages4
JournalPhysica C: Superconductivity and its applications
Publication statusPublished - Jan 1 1988

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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    Timusk, T., Bonn, D. A., Greedan, J. E., Stager, C. V., Garrett, J. D., O'Reilly, A. H., Reedyk, M., Kamara´s, K., Porter, C. D., Herr, S. L., & Tanner, D. B. (1988). Infrared properties of YBa2Cu3O7-δ. Physica C: Superconductivity and its applications, 153-155, 1744-1747.