Nodal Landau Fermi-Liquid Quasiparticles in Overdoped La${}_{1.77}$Sr${}_{0.23}$CuO${}_4$

Abstract

Nodal angle resolved photoemission spectra taken on overdoped La${}_{1.77}$Sr${}_{0.23}$CuO${}_4$ are presented and analyzed. It is proven that the low-energy excitations are true Landau Fermi-liquid quasiparticles. We show that momentum and energy distribution curves can be analyzed self-consistently without quantitative knowledge of the bare band dispersion. Finally, by imposing Kramers-Kronig consistency on the self-energy $\Sigma$, insight into the quasiparticle residue is gained. We conclude by comparing our results to quasiparticle properties extracted from thermodynamic, magneto-resistance, and high-field quantum oscillation experiments on overdoped Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$.

arXiv commentAccepted for publication in Phys. Rev. B

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• Three-Dimensional Fermi Surface of Overdoped La-Based Cuprates
• Electron scattering, charge order, and pseudogap physics in La${}_{1.6-x}$Nd${}_{0.4}$Sr${}_x$CuO${}_4$: An angle resolved photoemission spectroscopy study
• A Tale of Two Metals: contrasting criticalities in the pnictides and hole-doped cuprates
• A resonant inelastic x-ray scattering study of the spin and charge excitations in the overdoped superconductor La1.77Sr0.23CuO4
• Two-dimensional type-II Dirac fermions in layered oxides
• Band Structure of Overdoped Cuprate Superconductors: Density Functional Theory Matching Experiments
• Skewed Non-Fermi Liquids and the Seebeck Effect
• Damped spin excitations in a doped cuprate superconductor with orbital hybridization
• Orbitally selective breakdown of Fermi liquid quasiparticles in Ca${}_{1.8}$Sr${}_{0.2}$RuO${}_4$
• Oxide Fermi liquid universality revealed by electron spectroscopy