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arXiv · 2505.24512

Dynamical thermal near-field routing with the non-reciprocal Weyl semi-metal Co$_3$Sn$_2$S$_2$

A. Naeimi·S. -A. Biehs
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Abstract

We demonstrate theoretically the non-reciprocal heating dynamics of two nanoparticles in the vicinity of a substrate all made of the ferromagnetic Weyl semi-metal Co$_3$Sn$_2$S$_2$. We show that the thermal routing effect is due to a spin-spin coupling mechanism between the nanoparticle resonances and the non-reciprocal surface modes of the substrate. Our numerical results indicate that the non-reciprocal heating effect is on the order of 22.5% of the applied temperature differences. This strong rounting effect paves the way for first experimental realizations employing Weyl semi-metals and applications in nanoscale thermal management.

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A. Naeimi, S. -A. Biehs. 2025-05-30. Dynamical thermal near-field routing with the non-reciprocal Weyl semi-metal Co$_3$Sn$_2$S$_2$. https://doi.org/10.1063/5.0282686

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