Inelastic scattering rates in d-wave superconductors

Details Inelastic scattering rates in d-wave superconductors Inelastic scattering rates in d-wave superconductors

2007-08-28

arxiv.org/abs/0708.3836v2

Physica C 341, 265 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

This paper was published some years back but was never uploaded to arXiv

Scientific paper

10.1016/S0921-4534(00)00472-X

The inelastic scattering rates of quasiparticles in a two-dimensional d-wave superconductor, which arise from interactions with either acoustic phonons or other quasiparticles, are calculated within second order perturbation theory. We discover a strong enhancement of scattering with collinear momenta, brouth about by the special kinematics of the two-dimensional fermions with Dirac-like spectrum near the nodes of the d-wave order parameter. In the case of a local instantaneous interparticle potential we find that either an RPA-type resummation of the perturbation series or an inclusion of non-linear corrections to the Dirac spectrum is called for in order to obtain a finite scattering rate in the limit $\omega/T\to 0$. In either way, we find drastic changes in the scattering rate, as compared to the naively expected cubic temperature dependence.

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