Giant Thermal Magnetoresistance Driven by Graphene Magnetoplasmon

Abstract

In this work, we have predicted a giant thermal magnetoresistance for the thermal photon transport based on the tunable magnetoplasmon of graphene. By applying an external magnetic field, we find that the heat flux can be modulated by approximately three orders of magnitude. Accordingly, negative and giant relative thermal magnetoresistance ratios are both achieved for magnetic fields with a maximum strength of 4 Tesla. This effect is mainly caused by the suppression and enhancement of scattering interactions mediated by graphene magnetoplasmon. Specifically, it has never been achieved before for nanoparticles, which have no response to magnetic fields. The effect is remarkable at these reasonable strengths of fields, and thus has considerable significance for the real-life applications. It is also expected to enable technological advances for the thermal measurement-based magnetic sensor and magnetically thermal management.

14 pages, 4 figures,

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• Breakdown of detailed balance for thermal radiation by synthetic fields
• Nonreciprocal heat flux via synthetic fields in linear quantum systems
• Near-field radiative heat transfer between graphene-covered Weyl semimetals
• Multiple magnetoplasmon polaritons of magneto-optical graphene in near-field radiative heat transfer