TOPOLOGICAL ASYMMETRY IN THE DAMPING-PAIRING CONTRIBUTION OF ELECTRON-BOSON SCATTERING

We make a harmonic analysis of the pairing and damping contribution of a finite k range isotropic electron-phonon (or other boson) scatterin g in an anisotropic two-dimensional electronic system. We show that th e pairing contribution of the anisotropic part of the electronic syste m can be much larger than its damping contribution enhancing significa ntly T-c. The higher is the order of the harmonic of the electronic an isotropy, the higher can be the asymmetry in its damping-pairing contr ibution. This could explain the puzzle of a much broader quasiparticle peak in the n-doped than in the p-doped cuprates, their smaller T-c's being also attributed to larger damping effects.