Universal correlation between H-linear magnetoresistance and T-linear resistivity in high-temperature superconductors

J. Ayres (), M. Berben, C. Duffy, R. D. H. Hinlopen, Y.-T. Hsu, A. Cuoghi, M. Leroux, I. Gilmutdinov, M. Massoudzadegan, D. Vignolles, Y. Huang, T. Kondo, T. Takeuchi, S. Friedemann, A. Carrington, C. Proust and N. E. Hussey ()
Additional contact information
J. Ayres: University of Bristol
M. Berben: Radboud University
C. Duffy: Radboud University
R. D. H. Hinlopen: University of Bristol
Y.-T. Hsu: Radboud University
A. Cuoghi: Radboud University
M. Leroux: Univ. Toulouse, INSA-T
I. Gilmutdinov: Univ. Toulouse, INSA-T
M. Massoudzadegan: Univ. Toulouse, INSA-T
D. Vignolles: Univ. Toulouse, INSA-T
Y. Huang: University of Amsterdam
T. Kondo: University of Tokyo
T. Takeuchi: Toyota Technological Institute
S. Friedemann: University of Bristol
A. Carrington: University of Bristol
C. Proust: Univ. Toulouse, INSA-T
N. E. Hussey: University of Bristol

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract The signature feature of the ‘strange metal’ state of high-Tc cuprates—its linear-in-temperature resistivity—has a coefficient α1 that correlates with Tc, as expected were α1 derived from scattering off the same bosonic fluctuations that mediate pairing. Recently, an anomalous linear-in-field magnetoresistance (=γ1H) has also been observed, but only over a narrow doping range, leaving its relation to the strange metal state and to the superconductivity unclear. Here, we report in-plane magnetoresistance measurements on three hole-doped cuprate families spanning a wide range of temperatures, magnetic field strengths and doping. In contrast to expectations from Boltzmann transport theory, γ1 is found to correlate universally with α1. A phenomenological model incorporating real-space inhomogeneity is proposed to explain this correlation. Within this picture, superconductivity in hole-doped cuprates is governed not by the strength of quasiparticle interactions with a bosonic bath, but by the concentration of strange metallic carriers.

Date: 2024
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DOI: 10.1038/s41467-024-52564-3

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