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 language||English (US)|
|Number of pages||4|
|Journal||Journal of the Optical Society of America B: Optical Physics|
|State||Published - Mar 1989|
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics