Fano Resonance in a Coupled Electron-Phonon System
L.A. Falkovsky
Landau Institute for Theoretical Physics, Russian Academy of Sciences, Kosygina 2, 117 334 Moscow, Russia

and S. Klama
Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 PoznaƄ, Poland
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Raman light scattering with excitation of electron-hole continuum and a phonon is investigated theoretically. The effect of a surface and screening of the electron-photon coupling and of the deformation potential as a result of the Coulomb interaction of the electrons is taken into account. The parameters of the 340 cm-1 resonance line in superconducting YBaCuO are estimated by comparing with experimental data.
DOI: 10.12693/APhysPolA.91.347
PACS numbers: 73.20.Mf, 74.25.-q, 78.30.-j