Topological asymmetry in the damping-pairing contribution of electron-boson scattering

Details Topological asymmetry in the damping-pairing contribution of electron-boson scattering Topological asymmetry in the damping-pairing contribution of electron-boson scattering

1997-05-08

arxiv.org/abs/cond-mat/9705071v1

Physics

Condensed Matter

LATEX file and 3 Postscript figures

Scientific paper

10.1209/epl/i1997-00373-4

We make a harmonic analysis of the pairing and damping contribution of a finite $k$ range isotropic electron-phonon (or other boson) scattering in an anisotropic two-dimensional electronic system. We show that the pairing contribution of the anisotropic part of the electronic system can be much larger than its damping contribution enhancing significantly T_c. The higher is the order of the harmonic of the electronic anisotropy, smaller is its damping contribution and higher can be the asymmetry in its damping-pairing contribution. 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.

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