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Dissipation-driven strange metal behavior

  • Anomalous metallic properties are often observed in the proximity of quantum critical points, with violation of the Fermi Liquid paradigm. We propose a scenario where, near the quantum critical point, dynamical fluctuations of the order parameter with finite correlation length mediate a nearly isotropic scattering among the quasiparticles over the entire Fermi surface. This scattering produces a strange metallic behavior, which is extended to the lowest temperatures by an increase of the damping of the fluctuations. We phenomenologically identify one single parameter ruling this increasing damping when the temperature decreases, accounting for both the linear-in-temperature resistivity and the seemingly divergent specific heat observed, e.g., in high-temperature superconducting cuprates and some heavy-fermion metals.

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Author: Sergio CapraraORCiD, Carlo Di Castro, Giovanni Mirarchi, Götz SeiboldORCiD, Marco GrilliORCiD
URL:https://www.nature.com/articles/s42005-021-00786-y
DOI:https://doi.org/10.1038/s42005-021-00786-y
ISSN:2399-3650
Title of the source (English):Communications Physics
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2022
Tag:Electronic properties and materials; Superconducting properties and materials
Issue number:5
First Page:1
Last Page:7
Article number:10
Faculty/Chair:Fakultät 1 MINT - Mathematik, Informatik, Physik, Elektro- und Informationstechnik / FG Computational Physics
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