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TT: Tiefe Temperaturen

TT 15: Superconductivity - Properties, Electronic Structure, Order Parameter I

TT 15.1: Talk

Saturday, March 5, 2005, 14:00–14:15, TU H2053

Collision-limited Raman response in normal metals and superconductors — •Dirk Manske¹ and Dietrich Einzel² — ¹Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart — ²Walther-Meissner-Institut, 85748 Garching

We formulate a theory for describing the electronic Raman response in metals and superconductors with anisotropic scattering rates due to (a) elastic scattering of quasiparticles on impurities and (b) due to inelastic electron-electron scattering. Our approach is based on the Landau-Boltzmann equation for anisotropic metals at finite wavenumbers and takes into account (within RPA) the Coulomb repulsion as well as the relevant scattering processes. We employ our theory to the high-T_c cuprates for which the inelastic part of the scattering rates is taken from the solution of generalized Eliashberg equations based on a spin fluctuation-mediated Cooper-pairing. Numerical results for different scattering rates are presented.