Quasiparticle conductivities in disordered d-wave superconductors

Details Quasiparticle conductivities in disordered d-wave superconductors Quasiparticle conductivities in disordered d-wave superconductors

2001-08-02

arxiv.org/abs/cond-mat/0108035v1

Phys. Rev. Lett. 88, 076603 (2002).

Physics

Condensed Matter

Superconductivity

13 pages, no figures

Scientific paper

10.1103/PhysRevLett.88.076603

We study the quasiparticle transport coefficients in disordered d-wave superconductors. We find that spin and charge excitations are generally localized unless magnetic impurities are present. If the system is close to a nesting point in the impurity-scattering unitary limit, the tendency towards localization is reduced while the quasiparticle density of states gets enhanced by disorder. We also show that the residual repulsive interaction among quasiparticles has a delocalizing effect and increases the density of states.

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