Heating of inhomogeneous electron flow in the hydrodynamic regime: Current-inducedtemperature asymmetry

ORAL

Abstract

We study the temperature profile of an inhomogeneous 2D sample in the Hydrodynamic regime. The in-homogeneity is governed by the non-uniform momentum relaxation time of the constricted area. In this paper, we consider a circular-shape constriction where the inhomogeneity decays exponentially from its center. We have observed two features that have not been fully appreciated yet: (i) the asymmetry of the temperature profile ---- although the constriction is itself symmetric, and (ii) A 2D Landauer-dipole feature that is independent of the electron-electron interaction range. The similarity of this feature with that in 3D indicates the universality of Landauer-dipole in Hydrodynamic systems. Our phenomenological study further supports these two features.

*The work of G. Z and I. V. G is supported by the GIF grant (no. I-1505-303.10/2019), the DFG grant (No. GO1405/5) within FLAG-ERA Joint Transnational Call (Project GRANSPORT), and European Commission under the EU Horizon 2020 MSCA RISE-2019 program (Project 873028 HYDROTRONICS). The work of V.Yu.K and I.V.G was supported by the Russian Science Foundation (Grant No. 20-12-00147) . The work of V.Yu.K was also supported by the Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS”.

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Presenters

  • Gu Zhang

    • Karlsruhe Institute of Technology

Authors

  • Igor Gornyi

    • Karlsruhe Institute of Technology

  • Valentin Kachorovskii

    • Ioffe Physical Technical Institute

  • Konstantin Tikhonov

    • Landau Institute for Theoretical Physics RAS
    • Department of Physics, Skolkovo Institute of Science and Technology,

  • Gu Zhang

    • Karlsruhe Institute of Technology