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  • Smit, S., et al. (author)
  • Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography
  • 2024
  • In: Nature Communications. - : Nature Research. - 2041-1723. ; 15:1
  • Journal article (peer-reviewed)abstract
    • The anomalous strange metal phase found in high-Tc cuprates does not follow the conventional condensed-matter principles enshrined in the Fermi liquid and presents a great challenge for theory. Highly precise experimental determination of the electronic self-energy can provide a test bed for theoretical models of strange metals, and angle-resolved photoemission can provide this as a function of frequency, momentum, temperature and doping. Here we show that constant energy cuts through the nodal spectral function in (Pb,Bi)2Sr2−xLaxCuO6+δ have a non-Lorentzian lineshape, consistent with a self-energy that is k dependent. This provides a new test for aspiring theories. Here we show that the experimental data are captured remarkably well by a power law with a k-dependent scaling exponent smoothly evolving with doping, a description that emerges naturally from anti-de Sitter/conformal-field-theory based semi-holography. This puts a spotlight on holographic methods for the quantitative modelling of strongly interacting quantum materials like the cuprate strange metals.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Kondo, T. (1)
Bawden, L. (1)
Kim, T. K. (1)
Cacho, C. (1)
Smit, S (1)
Golden, M. S. (1)
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Takeuchi, T (1)
Mauri, E. (1)
Heringa, F. (1)
Gerritsen, F. (1)
van Heumen, E. (1)
Huang, Y. K. (1)
Hussey, N. E. (1)
Allan, M. (1)
Krikun, Alexander, 1 ... (1)
Schalm, K. (1)
Stoof, H. T.C. (1)
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University
Royal Institute of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2024 (1)

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