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Title: Radiative thermal rectification in many-body systems
Author: Latella, Ivan
Ben Abdallah, Philippe
Nikbakht, Moladad
Keywords: Propietats tèrmiques
Propietats òptiques
Transferència radiativa
Thermal properties
Optical properties
Radiative transfer
Issue Date: 12-Jul-2021
Publisher: American Physical Society
Abstract: Radiative thermal diodes based on two-element structures rectify heat flows thanks to a temperature dependence of material optical properties. The heat transport asymmetry through these systems, however, remains weak without a significant change in material properties with the temperature. Here we explore the heat transport in three-element radiative systems and demonstrate that a strong asymmetry in the thermal conductance can appear because of many-body interactions, without any dependence of optical properties on the temperature. The analysis of transport in three-body systems made with polar dielectrics and metallic layers reveals that rectification coefficients exceeding 50% can be achieved in the near-field regime with temperature differences of about 200 K. This work paves the way for compact devices to rectify near-field radiative heat fluxes over a broad temperature range and could have important applications in the domain of nanoscale thermal management.
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It is part of: Physical Review B, 2021, vol. 104, p. 045410
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ISSN: 2469-9950
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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