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arXiv · 2004.06336

Anomalous photon thermal Hall effect

A. Ott·S. -A. Biehs·P. Ben-Abdallah
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Abstract

We predict an anomalous thermal Hall effect (ATHE) mediated by photons in networks of Weyl semi-metals. Contrary to the photon thermal Hall effect in magneto-optical systems which requires the application of an external magnetic field the ATHE in a Weyl semi-metals network is an intrinsic property of these systems. Since the Weyl semi-metals can exhibit a strong nonreciprocal response in the infrared over a broad spectral range the magnitude of thermal Hall flux in these systems can be relatively large compared to the primary flux. This ATHE paves the way for a directional control of heat flux by localy tuning the magnitude of temperature field without changing the direction of temperature gradient.

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A. Ott, S. -A. Biehs, P. Ben-Abdallah. 2020-04-14. Anomalous photon thermal Hall effect. https://doi.org/10.1103/physrevb.101.241411

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