Inelastic scattering rates in d-wave superconductors
Abstract
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 . In either way, we find drastic changes in the scattering rate, as compared to the naively expected cubic temperature dependence.
Cite
@article{arxiv.0708.3836,
title = {Inelastic scattering rates in d-wave superconductors},
author = {J. Paaske and D. V. Khveshchenko},
journal= {arXiv preprint arXiv:0708.3836},
year = {2007}
}
Comments
This paper was published some years back but was never uploaded to arXiv