Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

C. G. Fatuzzo, Y. Sassa, M. Månsson, S. Pailhès, Oliver J Lipscombe, Stephen M Hayden, L Patthey, M Shi, M. Grioni, H M Rønnow, J Mesot, O. Tjernberg, J. Chang

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Nodal angle-resolved photoemission spectra taken on overdoped La1.77Sr0.23CuO4 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 Σ, 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 Tl2Ba2CuO6+δ.

Original languageEnglish
Article number205104
Number of pages5
JournalPhysical Review B: Condensed Matter and Materials Physics
Issue number20
Early online date8 May 2014
Publication statusPublished - 15 May 2014


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