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

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 , 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 Tl 2 Ba 2 CuO 6+δ .
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C. G. Fatuzzo, Y. Sassa, M. Mansson, Stéphane Pailhes, O. J. Lipscombe, et al.. Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4. Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2014, 89, pp.205104. ⟨10.1103/PhysRevB.89.205104⟩. ⟨hal-02311240⟩

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