Fermi-Liquid Interactions in d-Wave Superconductor

Abstract

This article develops a quantitative quasiparticle model of the low-temperature properties of d-wave superconductors which incorporates both Fermi-liquid effects and band-structure effects. The Fermi-liquid interaction effects are found to be classifiable into strong and negligible renormalizaton effects, for symmetric and antisymmetric combinations of the energies of $k\uparrow$ and $-k\downarrow$ quasiparticles, respectively. A particularly important conclusion is that the leading clean-limit temperature-dependent correction to the superfluid density is not renormalized by Fermi-liquid interactions, but is subject to a Fermi velocity (or mass) renormalization effect. This leads to difficulties in accounting for the penetration depth measurements with physically acceptable parameters, and hence reopens the question of the quantitative validity of the quasiparticle picture.

4 pages

References in corpus (4)

• Impurity-Induced Quasiparticle Transport and Universal Limit Wiedemann-Franz Violation in d-Wave Superconductors
• Quasiparticles in the superconducting state of Bi2Sr2CaCu2O8
• Low-Energy Quasiparticles in Cuprate Superconductors: A Quantitative Analysis
• Quasiparticle-quasiparticle Scattering in High Tc Superconductors

Cited by in corpus (5)

• Theory of Superconductivity in Strongly Correlated Electron Systems
• Nodal Protectorate: A Unified Theory of the ab-plane and c-axis Penetration Depths of Underdoped cuprates
• Fermi liquid interactions and the superfluid density in d-wave superconductors
• Tight-Binding Superconducting Phases in the Unconventional Compounds Strontium-Substituted Lanthanum Cuprate and Strontium Ruthenate
• Self-Consistent Study of the Superconducting Gap in the Strontium-doped Lanthanum Cuprate