Chirality Enables Thermal Magnon Transistors

2023/06/14 by Tao Yu, Yu, Tao, Chengyuan Cai +3 · 3 citations
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Physics of Superconductivity and Magnetism

paper · pdf · doi:10.48550/arxiv.2306.08371

openalex publication_date 2023/06/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report a theory of thermal spin pumping into proximity magnets under a transverse-bias-driven heat flow of magnons in magnetic films when the dipolar coupling to the magnetic gate is tuned to be "chiral". While there is no rectification of the magnon current in the film, we predict that chirality diverts a large percentage (50% for perfect chirality) of it into the gate. This transverse thermal spin pumping effect can be controlled by rotating the film magnetization and may help manage the heat flow in future magnonic circuits.

Cited by

• Chirality and polarization of inertial antiferromagnetic resonances driven by spin-orbit torques
• Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond
• Evanescent Orbital Pumping by Magnetization Dynamics Free of Spin-Orbit Coupling

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