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.

Dissipation-driven strange metal behavior / Caprara, Sergio; DI CASTRO, Carlo; Mirarchi, Giovanni; Seibold, GOTZ ULRICH; Grilli, Marco. - In: COMMUNICATIONS PHYSICS. - ISSN 2399-3650. - 5(2022). [10.1038/s42005-021-00786-y]

Dissipation-driven strange metal behavior

Sergio Caprara
Project Administration
;
Carlo Di Castro
Supervision
;
Giovanni Mirarchi
Methodology
;
Götz Seibold
Writing – Original Draft Preparation
;
Marco Grilli
Project Administration
2022

Abstract

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.
2022
dynamical quantum criticality; charge density fluctuations; strange metal; cuprates
01 Pubblicazione su rivista::01a Articolo in rivista
Dissipation-driven strange metal behavior / Caprara, Sergio; DI CASTRO, Carlo; Mirarchi, Giovanni; Seibold, GOTZ ULRICH; Grilli, Marco. - In: COMMUNICATIONS PHYSICS. - ISSN 2399-3650. - 5(2022). [10.1038/s42005-021-00786-y]
File allegati a questo prodotto
File Dimensione Formato  
Caprara_Dissipation-driven_2022.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 672.61 kB
Formato Adobe PDF
672.61 kB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1609086
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 16
social impact