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arXiv · 1707.00674

Theory of magnon-mediated tunnel magneto-Seebeck effect

Benedetta Flebus·Gerrit E. W. Bauer·Rembert A. Duine·Yaroslav Tserkovnyak
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Abstract

The tunnel magneto-Seebeck effect is the dependence of the thermopower of magnetic tunnel junctions on the magnetic configuration. It is conventionally interpreted in terms of a thermoelectric generalization of the tunnel magnetoresistance. Here, we investigate the heat-driven electron transport in these junctions associated with electron-magnon scattering, using stochastic Landau-Lifshitz phenomenology and quantum kinetic theory. Our findings challenge the widely accepted single-electron picture of the tunneling thermopower in magnetic junctions.

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Benedetta Flebus, Gerrit E. W. Bauer, Rembert A. Duine, Yaroslav Tserkovnyak. 2017-07-03. Theory of magnon-mediated tunnel magneto-Seebeck effect. https://doi.org/10.1103/physrevb.96.094429

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