Interlayer Heat Transfer in Bilayer Carrier Systems

Abstract

We study theoretically how energy and heat are transferred between the two-dimensional layers of bilayer carrier systems due to near-field interlayer carrier interaction. We derive general expressions for the interlayer heat transfer and thermal conductance. Approximation formulas and detailed calculations for semiconductor and graphene based bilayers are presented. Our calculations for GaAs, Si and graphene bilayers show that the interlayer heat transfer can exceed the electron-phonon heat transfer below (system dependent) finite crossover temperature. We show that disorder strongly enhances the interlayer heat transport and pushes the threshold towards higher temperatures.

8 pages, 4 figures. Changes adopted during the review process: title changed, introduction and abstract rearranged, section headings added, Figure 1 enhanced, more details and a new figure on graphene added

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Cited by in corpus (3)

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• Beyond the Drude model: surface and non-local effects in near-field radiative heat transfer and the Casimir puzzle