Theory of spin Peltier effect

Abstract

A microscopic theory of the spin Peltier effect in a bilayer structure comprising a paramagnetic metal (PM) and a ferromagnetic insulator (FI) based on the nonequilibrium Green's function method is presented. Spin current and heat current driven by temperature gradient and spin accumulation are formulated as functions of spin susceptibilities in the PM and the FI, and are summarized by Onsager's reciprocal relations. By using the current formulae, we estimate heat generation and absorption at the interface driven by the heat-current injection mediated by spins from PM into FI.

arXiv comment4 pages, 1 figure

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• Green's function formalism for spin transport in metal-insulator-metal heterostructures
• Magnon polarons in the spin Peltier effect
• Experimental proof of the reciprocal relation between spin Peltier and spin Seebeck effects in a bulk YIG/Pt bilayer
• Magnetic-field-induced suppression of spin Peltier effect in Pt/${\mathrm{Y}}_3\mathrm{F}{\mathrm{e}}_5{\mathrm{O}}_{12}$ system at room temperature
• Anisotropic superconducting spin transport at magnetic interfaces
• Transient response of spin Peltier effect revealed by lock-in thermoreflectance measurement
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• Tunable Spin Seebeck Diode with Magnonic Spin Tunneling Junction
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• Asymmetric quantum shot noise in magnon transport
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• Graph theoretic analysis of three-terminal quantum dot thermocouples: Onsager relations and spin-thermoelectric effects
• Spin Pumping into two-dimensional systems
• Cryogenic spin Peltier effect detected by a RuO${}_2$-AlO${}_x$ on-chip microthermometer
• Thermomagnetic Anomalies by Magnonic Criticality in Ultracold Atomic Transport
• Voltage-Controlled Magnonic Spin Tunneling Junction
• Optimising motion-induced spin transfer
• Thermomagnetic anomalies in quantum magnon transport caused by tunable junction geometries in cold atomic systems
• Quantum oscillations of valley current driven by microwave irradiation in transition-metal dichalcogenide/ferromagnet hybrids