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Theory of the magnon-mediated tunnel magneto-Seebeck effect

Benedetta Flebus, Gerrit E. W. Bauer, Rembert A. Duine, and Yaroslav Tserkovnyak
Phys. Rev. B 96, 094429 – Published 25 September 2017

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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  • Received 3 July 2017

DOI:https://doi.org/10.1103/PhysRevB.96.094429

©2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Benedetta Flebus1,2, Gerrit E. W. Bauer3,4, Rembert A. Duine1,5, and Yaroslav Tserkovnyak2

  • 1Institute for Theoretical Physics and Center for Extreme Matter and Emergent Phenomena, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands
  • 2Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
  • 3Institute for Materials Research, WPI-AIMR & CSNR, Tohoku University, Sendai 980-8557, Japan
  • 4Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • 5Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands

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Issue

Vol. 96, Iss. 9 — 1 September 2017

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