2004/11/17 by Dietrich Einzel, Dirk Manske
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Atomic physics #Condensed matter physics #Coulomb #Electron #Inelastic scattering #Magnetic and transport properties of perovskites and related materials #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Raman scattering #Raman spectroscopy #Relaxation (psychology) #Scattering #Superconductivity #X-ray Raman scattering #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.70.172507
5 pages, 4figures. accepted in PRB (Brief Report), in press
arxiv created 2004/11/17 · openalex publication_date 2004/11/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using a generalized response theory we derive the electronic Raman response function for metals with anisotropic relaxation rates. The calculations account for the long-range Coulomb interaction and treat the collision operator within a charge conserving relaxation time approximation. We extend earlier treatments to finite wave numbers (\ensuremath|q\ensuremath|⪡kF) and incorporate inelastic electron-electron scattering besides elastic impurity scattering. Moreover we generalize the Lindhard density response function to the Raman case. Numerical results for the quasiparticle scattering rate and the Raman response function for cuprate superconductors are presented.