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Anisotropic breakdown of Fermi liquid quasiparticle excitations in overdoped La2−xSrxCuO4

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  • J. Chang

    (Institute for Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL)
    Swiss Light Source, Paul Scherrer Institut
    Laboratory for Neutron Scattering, Paul Scherrer Institut)

  • M. Månsson

    (Institute for Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL)
    Laboratory for Neutron Scattering, Paul Scherrer Institut
    KTH Royal Institute of Technology, Materials Physics)

  • S. Pailhès

    (Laboratory for Neutron Scattering, Paul Scherrer Institut
    Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon)

  • T. Claesson

    (KTH Royal Institute of Technology, Materials Physics)

  • O. J. Lipscombe

    (H. H. Wills Physics Laboratory, University of Bristol)

  • S. M. Hayden

    (H. H. Wills Physics Laboratory, University of Bristol)

  • L. Patthey

    (Swiss Light Source, Paul Scherrer Institut)

  • O. Tjernberg

    (KTH Royal Institute of Technology, Materials Physics)

  • J. Mesot

    (Institute for Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL)
    Swiss Light Source, Paul Scherrer Institut
    Laboratory for Solid State Physics, ETH Zürich)

Abstract

High-temperature superconductivity emerges from an un-conventional metallic state. This has stimulated strong efforts to understand exactly how Fermi liquids breakdown and evolve into an un-conventional metal. A fundamental question is how Fermi liquid quasiparticle excitations break down in momentum space. Here we show, using angle-resolved photoemission spectroscopy, that the Fermi liquid quasiparticle excitations of the overdoped superconducting cuprate La1.77Sr0.23CuO4 is highly anisotropic in momentum space. The quasiparticle scattering and residue behave differently along the Fermi surface and hence the Kadowaki–Wood's relation is not obeyed. This kind of Fermi liquid breakdown may apply to a wide range of strongly correlated metal systems where spin fluctuations are present.

Suggested Citation

  • J. Chang & M. Månsson & S. Pailhès & T. Claesson & O. J. Lipscombe & S. M. Hayden & L. Patthey & O. Tjernberg & J. Mesot, 2013. "Anisotropic breakdown of Fermi liquid quasiparticle excitations in overdoped La2−xSrxCuO4," Nature Communications, Nature, vol. 4(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3559
    DOI: 10.1038/ncomms3559
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    1. S. Smit & E. Mauri & L. Bawden & F. Heringa & F. Gerritsen & E. Heumen & Y. K. Huang & T. Kondo & T. Takeuchi & N. E. Hussey & M. Allan & T. K. Kim & C. Cacho & A. Krikun & K. Schalm & H.T.C. Stoof & , 2024. "Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Lichen Wang & Guanhong He & Zichen Yang & Mirian Garcia-Fernandez & Abhishek Nag & Kejin Zhou & Matteo Minola & Matthieu Le Tacon & Bernhard Keimer & Yingying Peng & Yuan Li, 2022. "Paramagnons and high-temperature superconductivity in a model family of cuprates," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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