Abstract
Nodal angle-resolved photoemission spectra taken on overdoped LaSrCuO 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 , insight into the quasiparticle residue is gained. We conclude by comparing our results to quasiparticle properties extracted from thermodynamic, magnetoresistance, and high-field quantum oscillation experiments on overdoped TlBaCuO.
- Received 6 January 2014
DOI:https://doi.org/10.1103/PhysRevB.89.205104
©2014 American Physical Society