Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography

S. Smit; E. Mauri; L. Bawden; F. Heringa; F. Gerritsen; E. van 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; M. S. Golden

doi:10.1038/s41467-024-48594-6

Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography

S. Smit^*, E. Mauri, L. Bawden, F. Heringa, F. Gerritsen, E. van 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, M. S. Golden

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The anomalous strange metal phase found in high-T_c 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)₂Sr_2−xLa_xCuO_6+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.

Original language	English
Article number	4581
Number of pages	8
Journal	Nature Communications
Volume	15
Issue number	1
DOIs	https://doi.org/10.1038/s41467-024-48594-6
Publication status	Published - 29 May 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

Funding

We acknowledge the former Foundation for Fundamental Research on Matter (FOM) under grant no. 16METL01, \u2018Strange Metals\u2019. FOM was financially supported by the Netherlands Organization for Scientific Research (NWO), which in its turn is funded by the Dutch Ministry of Education, Culture and Science (OCW). This work is also part of the D-ITP consortium, a programme of the NWO. We acknowledge Diamond Light Source for time on Beamline I05 under Proposals SI19403 and SI22464, and Jan de Boer, Stefan Vandoren, Jay Armas and Umut G\u00FCrsoy for a critical reading of the manuscript and we are grateful to the late Jan Zaanen for many useful discussions.

Funders	Funder number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Stichting voor Fundamenteel Onderzoek der Materie	16METL01
Ministerie van onderwijs, cultuur en wetenschap	SI22464, SI19403

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Smit, S., Mauri, E., Bawden, L., Heringa, F., Gerritsen, F., van Heumen, E., Huang, Y. K., Kondo, T., Takeuchi, T., Hussey, N. E., Allan, M., Kim, T. K., Cacho, C., Krikun, A., Schalm, K., Stoof, H. T. C., & Golden, M. S. (2024). Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography. Nature Communications, 15(1), Article 4581. https://doi.org/10.1038/s41467-024-48594-6

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title = "Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography",

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.",

author = "S. Smit and E. Mauri and L. Bawden and F. Heringa and F. Gerritsen and {van Heumen}, E. and Huang, {Y. K.} and T. Kondo and T. Takeuchi and Hussey, {N. E.} and M. Allan and Kim, {T. K.} and C. Cacho and A. Krikun and K. Schalm and Stoof, {H. T. C.} and Golden, {M. S.}",

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day = "29",

doi = "10.1038/s41467-024-48594-6",

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Smit, S, Mauri, E, Bawden, L, Heringa, F, Gerritsen, F, van Heumen, E, Huang, YK, Kondo, T, Takeuchi, T, Hussey, NE, Allan, M, Kim, TK, Cacho, C, Krikun, A, Schalm, K, Stoof, HTC & Golden, MS 2024, 'Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography', Nature Communications, vol. 15, no. 1, 4581. https://doi.org/10.1038/s41467-024-48594-6

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T1 - Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography

AU - Smit, S.

AU - Mauri, E.

AU - Bawden, L.

AU - Heringa, F.

AU - Gerritsen, F.

AU - van Heumen, E.

AU - Huang, Y. K.

AU - Kondo, T.

AU - Takeuchi, T.

AU - Hussey, N. E.

AU - Allan, M.

AU - Kim, T. K.

AU - Cacho, C.

AU - Krikun, A.

AU - Schalm, K.

AU - Stoof, H. T. C.

AU - Golden, M. S.

PY - 2024/5/29

Y1 - 2024/5/29

N2 - 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.

AB - 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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Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography

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