Year: 2020
Type: article
Abstract: We predict an anomalous thermal Hall effect (ATHE) mediated by photons in networks of Weyl semimetals. 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 semimetals network is an intrinsic property of these systems. Since the Weyl semimetals 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 locally tuning the magnitude of temperature field without changing the direction of temperature gradient.
Authors: A. Ott, S.-A. Biehs, P. Ben-Abdallah
Institution: Carl von Ossietzky Universität Oldenburg
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Deutsche Forschungsgemeinschaft
OpenAlex ID: W3016987164