Raman-scattering studies of coupled modes and superconducting gap excitations in single-crystal YBa2Cu3O7-δ

S. L. Cooper, F. Slakey, M. V. Klein, J. P. Rice, E. D. Bukowski, D. M. Ginsberg

Research output: Contribution to journalArticlepeer-review

Abstract

The results of polarized light-scattering studies of single-crystal YBa2Cu3O7-δ are presented. In the normal state, strong electronic scattering is observed both directly and through interference effects with certain phonons. Below T, this electronic scattering undergoes a redistribution that is due to gap formation. The redistribution of the continuum below Tc, has a strong symmetry dependence, suggesting possible gap anisotropy in YBa2Cu3O7-δ. Phonon self-energy effects are also shown to be consistent with gap anisotropy. Finally, studies of untwinned single crystals illustrate striking optical anisotropy of the Raman spectra in the a-b plane.

Original languageEnglish (US)
Pages (from-to)436-439
Number of pages4
JournalJournal of the Optical Society of America B: Optical Physics
Volume6
Issue number3
DOIs
StatePublished - Mar 1989

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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