Thermal dynamics and electronic temperature waves in layered correlated materials

Year: 2021

Authors: Mazza G.; Gandolfi M.; Capone M.; Banfi F.; Giannetti C.

Autors Affiliation: Department of Quantum Matter Physics, University of Geneva, Quai Ernest-Ansermet 24, Geneva, 1211, Switzerland; CNR-INO, Via Branze 45, Brescia, 25123, Italy; Department of Information Engineering, University of Brescia, Via Branze 38, Brescia, 25123, Italy; Scuola Internazionale Superiore di Studi Avanzati (SISSA) and CNR-IOM Democritos National Simulation Center, Via Bonomea 265, Trieste, 34136, Italy; FemtoNanoOptics group, University de Lyon, CNRS, University Claude Bernard Lyon 1, Institut Lumiire Matiire, Villeurbanne, F-69622, France; Dipartimento di Matematica e Fisica, Universita Cattolica del Sacro Cuore, Via Musei 41, Brescia, I-25121, Italy; Interdisciplinary Laboratories for Advanced Materials Physics (I-LAMP), Universita Cattolica del Sacro Cuore, Via Musei 41, Brescia, I-25121, Italy

Abstract: Understanding the mechanism of heat transfer in nanoscale devices remains one of the greatest intellectual challenges in the field of thermal dynamics, by far the most relevant under an applicative standpoint. When thermal dynamics is confined to the nanoscale, the characteristic timescales become ultrafast, engendering the failure of the common description of energy propagation and paving the way to unconventional phenomena such as wave-like temperature propagation. Here, we explore layered strongly correlated materials as a platform to identify and control unconventional electronic heat transfer phenomena. We demonstrate that these systems can be tailored to sustain a wide spectrum of electronic heat transport regimes, ranging from ballistic, to hydrodynamic all the way to diffusive. Within the hydrodynamic regime, wave-like temperature oscillations are predicted up to room temperature. The interaction strength can be exploited as a knob to control the dynamics of temperature waves as well as the onset of different thermal transport regimes.


Volume: 12 (1)      Pages from: 6904-1  to: 6904-11

More Information: G.M. acknowledges financial support from the Swiss National Science Foundation through an AMBIZIONE grant. Part of this work has been supported from the European Research Council (ERC-319286-QMAC). M.G. acknowledges financial support from the CNR Joint Laboratories program 2019-2021 and Project No. SAC.AD002.026 (OMEN). F.B. acknowledges financial support from Universite de Lyon in the frame of the IDEXLYON Project-Programme Investissements d´ Avenir (ANR-16-IDEX-0005) and from Universite Claude Bernard Lyon 1 through the BQR Accueil EC 2019 grant and from CNRS (Delegation CNRS 2021-2022). C.G. acknowledges support from Universita Cattolica del Sacro Cuore through D.2.2 and D.3.1 grants. M.C. and C.G. acknowledge financial support from MIUR through the PRIN 2015 (Prot 2015C5SEJJ001) and PRIN 2017 (Prot. 20172H2SC4_005) programs.
KeyWords: phonon hydrodynamics; conductivity; superconductors
DOI: 10.1038/s41467-021-27081-2