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: Univ Geneva, Dept Quantum Matter Phys, Quai Ernest Ansermet 24, CH-1211 Geneva, Switzerland; CNR INO, Via Branze 45, I-25123 Brescia, Italy; Univ Brescia, Dept Informat Engn, Via Branze 38, I-25123 Brescia, Italy; Scuola Int Super Studi Avanzati SISSA, Via Bonomea 265, I-34136 Trieste, Italy; CNR IOM Democritos Natl Simulat Ctr, Via Bonomea 265, I-34136 Trieste, Italy; Univ Claude Bernard Lyon 1, Univ Lyon, FemtoNanoOpt Grp, Inst Lumiere Matiere, F-69622 Villeurbanne, France; Univ Cattolica Sacro Cuore, Dipartimento Matemat & Fis, Via Musei 41, I-25121 Brescia, Italy; Univ Cattolica Sacro Cuore, Interdisciplinary Labs Adv Mat Phys I LAMP, Via Musei 41, I-25121 Brescia, 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.

Journal/Review: NATURE COMMUNICATIONS

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

Citations: 8
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