A spincaloritronic battery
arXiv:1712.01870 · doi:10.1103/PhysRevApplied.8.054038
Abstract
The thermoelectric performance of a topological energy converter is analyzed. The H-shaped device is based on a combination of transverse topological effects involving the spin: the inverse spin Hall effect and the spin Nernst effect. The device can convert a temperature drop in one arm into an electric power output in the other arm. Analytical expressions for the output voltage, the figure-of-merit (ZT) and energy converting efficiency are reported. We show that the output voltage and the ZT can be tuned by the geometry of the device and the physical properties of the material. Importantly, contrary to a conventional thermoelectric device, here a low electric conductivity may in fact enhance the ZT value, thereby opening a path to new strategies in optimizing the figure-of-merit.
12 pages, 3 figures, accepted by Phys. Rev. Applied
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Cited by in corpus (7)
- Topological Nonlinear Anomalous Nersnt Effect in Strained Transition Metal Dichalcogenides
- Optimal thermoelectricity with quantum spin-Hall edge states
- Spincaloritronic measurements: a round robin comparison of the longitudinal spin Seebeck effect
- Experimental proof of the reciprocal relation between spin Peltier and spin Seebeck effects in a bulk YIG/Pt bilayer
- Helical spin thermoelectrics controlled by a side-coupled magnetic quantum dot in the quantum spin Hall state
- Unidirectional Seebeck effect in magnetic topological insulators
- Temperature dependence of the mean magnon collision time in a spin Seebeck device