Far-infrared conductivity of the high-Tc superconductor YBa2Cu3O7

D. A. Bonn, J. E. Greedan, C. V. Stager, T. Timusk, M. G. Doss, S. L. Herr, K. Kamars, D. B. Tanner

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We present reflectance data for the high-temperature superconductor YBa2Cu3O7, and the Kramers-Kronig-transformed conductivity from 50 to 900 cm-1. There is a rich phonon structure with peaks at 151, 191, 279, 310, 548, and 609 cm-1. The continuous background is Drude type at high temperature but below the superconducting transition there is a region of suppressed conductivity consistent with a superconducting gap with the weak-coupling BCS value. Also associated with superconductivity are changes to the low-lying phonons and a plasma-type edge at 60 cm-1.

Original languageEnglish
Pages (from-to)2249-2250
Number of pages2
JournalPhysical review letters
Issue number21
Publication statusPublished - Jan 1 1987

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Bonn, D. A., Greedan, J. E., Stager, C. V., Timusk, T., Doss, M. G., Herr, S. L., Kamars, K., & Tanner, D. B. (1987). Far-infrared conductivity of the high-Tc superconductor YBa2Cu3O7. Physical review letters, 58(21), 2249-2250. https://doi.org/10.1103/PhysRevLett.58.2249