Fermi liquid interactions and the superfluid density in d-wave superconductors

Abstract

We construct a phenomenological superfluid Fermi liquid theory for a two-dimensional d-wave superconductor on a square lattice, and study the effect of quasiparticle interactions on the superfluid density. Using simple models for the dispersion and the Landau interaction function, we illustrate the deviation of these results from those for the isotropic superfluid. This allows us to reconcile the value and doping dependence of the superfluid density slope at low temperature obtained from penetration depth measurements, with photoemission data on nodal quasiparticles.

5 latex pages, 1 eps-figure. submitted to PRB

References in corpus (1)

• Projected Wavefunctions and High Temperature Superconductivity

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• Competition between superconductivity and nematic order in high-$T_c$ superconductor
• Enhancement of the critical temperature in cuprate superconductors by inhomogeneous doping