Twist-induced near-field thermal switch using nonreciprocal surface magnon-polaritons

Peng, J., Tang, G., Wang, L., Macêdo, R. , Chen, H. and Ren, J. (2021) Twist-induced near-field thermal switch using nonreciprocal surface magnon-polaritons. ACS Photonics, 8(8), pp. 2183-2189. (doi: 10.1021/acsphotonics.0c01934)

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We explore that two ferromagnetic insulator slabs host a strong twist-induced near-field radiative heat transfer in the presence of twisted magnetic fields. Using the formalism of fluctuational electrodynamics, we find the existence of large twist-induced thermal switch ratio in large damping condition and nonmonotonic twist manipulation for heat transfer in small damping condition, associated with the different twist-induced effects of nonreciprocal elliptic surface magnon-polaritons, hyperbolic surface magnon-polaritons, and twist-non-resonant surface magnon-polaritons. Moreover, the near-field radiative heat transfer can be significantly enhanced by the twist-non-resonant surface magnon-polaritons in the ultra-small damping condition. Such twist-induced effect is applicable for other kinds of anisotropic slabs with timereversal symmetry breaking. Our findings provide a way to twisted and magnetic control in nanoscale thermal management and improve it with twistronics concepts.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Macedo, Dr Rair
Authors: Peng, J., Tang, G., Wang, L., Macêdo, R., Chen, H., and Ren, J.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:ACS Photonics
Publisher:American Chemical Society
ISSN (Online):2330-4022
Published Online:15 July 2021
Copyright Holders:Copyright © 2021 American Chemical Society
First Published:First published in ACS Photonics 8(8):2183–2189
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
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