An Optical Investigation of Electronic Excitations in the High-Temperature Superconductors YBa2Cu307 _ 6 and Bi2Sr2CaCu2O8 + Δ

F. Slakey, M. V. Klein, S. Lance Cooper, Edward D. Bukowski, Joseph P. Rice, D. M. Ginsberg

Research output: Contribution to journalArticlepeer-review

Abstract

The results of Raman scattering from superconducting gap excitations in the high Tc compounds YBa2Cu3O7-δ and Bi2Sr2CaCu2O8+Δ are compared. In the normal state, both materials exhibit strong electronic interband scattering which manifests itself as a broad background continuum having both A1g and B1g symmetry components. At low temperatures a redistribution of this electronic scattering occurs, indicative of the formation of a superconducting gap in these compounds. The two symmetries exhibit distinct redistribution, however, denoting strong anisotropy. At temperatures well below Tc, both compounds exhibit residual low-energy scattering, a feature suggestive of the coexistence of normal electrons and superconducting quasi-particles.

Original languageEnglish (US)
Pages (from-to)2394-2398
Number of pages5
JournalIEEE Journal of Quantum Electronics
Volume25
Issue number11
DOIs
StatePublished - Nov 1989

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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