Nodal Landau Fermi-Liquid Quasiparticles in Overdoped   La$_{1.77}$Sr$_{0.23}$CuO$_4$
  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$_{6+\delta}$. 
C. G. Fatuzzo, Y. Sassa, M. Maansson, S. Pailhes, O. J. Lipscombe, S.   M. Hayden, L. Patthey, M. Shi, M. Grioni, H. M. Ronn...
cond-mat.supr-con