Spin-transfer mechanism for magnon-drag thermopower

Abstract

We point out a relation between the dissipative spin-transfer-torque parameter $\beta$ and the contribution of magnon drag to the thermoelectric power in conducting ferromagnets. Using this result we estimate $\beta$ in iron at low temperatures, where magnon drag is believed to be the dominant contribution to the thermopower. Our results may be used to determine $\beta$ from magnon-drag-thermopower experiments, or, conversely, to infer the strength of magnon drag via experiments on spin transfer.

References in corpus (7)

• Theory of magnon-driven spin Seebeck effect
• Microscopic approach to current-driven domain wall dynamics
• Microscopic Calculation of Spin Torques in Disordered Ferromagnets
• Electron Transport Driven by Nonequilibrium Magnetic Textures
• Time-Resolved X-ray Microscopy of Spin-Torque-Induced Magnetic Vortex Gyration
• Spin pumping by a field-driven domain wall
• Functional Keldysh Theory of Spin Torques

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• Thermal spin injection and interface insensitivity in permalloy/aluminum metallic non-local spin valves
• Microscopic theory of magnon-drag electron flow in ferromagnetic metals
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• Theory of Cross-correlated Electron-Magnon Transport Phenomena: Case of Magnetic Topological Insulator
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• Non-equilibrium Magnon Engineering Enabling Significant Thermal Transport Modulation
• Interband magnon drag in ferrimagnetic insulators
• Calculation of magnon drag force induced by an electric current in ferromagnetic metals
• Signature of Electron-magnon Umklapp Scattering in L10 FePt probed by Thermoelectric Measurements