Theory of the magnon-mediated tunnel magneto-Seebeck effect

B. Flebus, G.E.W. Bauer, R.A. Duine, Y. 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.

Original languageEnglish
Article number094429
Number of pages8
JournalPhysical Review B
Volume96
Issue number9
DOIs
Publication statusPublished - 25 Sep 2017

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