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

Arun Paramekanti; Mohit Randeria

doi:10.1103/PhysRevB.66.214517

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

Arun Paramekanti, Mohit Randeria

DOI 10.1103/PhysRevB.66.214517 · Physical Review B

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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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown