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

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2014
Author Fatuzzo C. G., Sassa Y., Mansson M., Pailhes S., Lipscombe O. J., Hayden S. M., Patthey L., Shi M., Grioni M., Ronnow H. M., Mesot J., Tjernberg O., Chang J.,
Project Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials
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Original article (peer-reviewed)

Journal PHYSICAL REVIEW B
Volume (Issue) 89(20)
Page(s) 205104
Title of proceedings PHYSICAL REVIEW B
DOI 10.1103/PhysRevB.89.205104

Open Access

URL http://infoscience.epfl.ch/record/198755?ln=en
Type of Open Access Repository (Green Open Access)

Abstract

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 Sigma, 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+delta.
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