The electronic Raman continuum in YBa2Cu3O7 is calculated in a model which takes into account strong inelastic scattering and interband transitions. The ab-plane polarized continuum contains a large contribution from interband processes and does not depend strongly on temperature and the inelastic scattering strength. The in-plane anisotropy is determined by the interband transitions rather than by the anisotropy of the Fermi surface. The ZZ continuum can be crudely described within a single-band model with inelastic scattering and is very dependent on the relaxation rates of inelastic scattering. The nature of the oxygen-deficiency dependence of the Raman spectra is also commented upon.
ASJC Scopus subject areas
- Condensed Matter Physics