Normal-state gap transition in Cu-O superconductors

Joseph Orenstein, G. A. Thomas, D. H. Rapkine, C. G. Bethea, B. F. Levine, R. J. Cava, E. A. Rietman, D. W. Johnson

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


The reflectivity spectra of La2-xSrxCuO4 for x=0 and 0.175, and Ba2YCucO9- (2.1) were measured over a broad frequency range, from 0.005 to 3 eV. In the normal state of these compounds the reflectivity is temperature independent and significantly smaller than expected from the Drude model. We describe a dielectric function which reproduces the main features of the spectra by supplementing the Drude contribution with a strong transition across a gap.

Original languageEnglish (US)
Pages (from-to)729-732
Number of pages4
JournalPhysical Review B
Issue number1
StatePublished - 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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