Electron Raman scattering in YBa2Cu3O crystals
Zaitsev S. V. , Maksimov A. A., Tartakovskii I.I., Klein M. V. , Veal B. W.
A detailed study has been made of electron scattering of light by YBa2Cu3065 single crystals with a sharp superconducting transition at Tc<=*53 K. In the superconducting state, the spectral density of the electron continuum undergoes a restructuring at frequencies ω:£250 cm-1 in the (x'x' polarization), and a 2Δ peak arises at ω«*200 cm-1. In crossed polarizations (x'y') the spectrum has a low intensity, and it does not undergo any significant changes at temperatures below Tc, in contrast with the spectrum of YBa2Cu307. © 1995 American Institute of Physics.