Resonant Raman scattering in YBa2Cu3O7 : band theory and experiment

The dependence of the Raman phonon intensities of YBa2Cu3O7 on laser frequency is measured and calculated. The local-density approximation and the linear muffin-tin-orbital method were used for the calculations. Good agreement is found, not only in the absolute phonon intensities in zz or xx/yy pola...

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Bibliographic Details
Published in:Physical review letters 1990-12, Vol.65 (24), p.3048-3051
Main Authors: HEYEN, E. T, RASHKEEV, S. N, MAZIN, I. I, ANDERSEN, O. K, LIU, R, CARDONA, M, JEPSEN, O
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Infrared and raman spectra and scattering
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Physics
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Summary:The dependence of the Raman phonon intensities of YBa2Cu3O7 on laser frequency is measured and calculated. The local-density approximation and the linear muffin-tin-orbital method were used for the calculations. Good agreement is found, not only in the absolute phonon intensities in zz or xx/yy polarization but also in the shape of the resonance profiles. These results indicate that the local-density approximation gives an essentially correct description of the band structure and of the electron-phonon interaction + or - 2 eV around the Fermi energy. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.65.3048