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)

Abstract

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
• Status: Published
• Refereed: Yes
• 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: 2330-4022
• 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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