Seebeck effect in nanomagnets

Dmitry V. Fedorov, Martin Gradhand*, Katarina Tauber, Gerrit E.W. Bauer, Ingrid Mertig

*Corresponding author for this work

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Abstract

We present a theory of the Seebeck effect in nanomagnets with dimensions smaller than the spin diffusion length, showing that the spin accumulation generated by a temperature gradient strongly affects the thermopower. We also identify a correction arising from the transverse temperature gradient induced by the anomalous Ettingshausen effect and an induced spin-heat accumulation gradient. The relevance of these effects for nanoscale magnets is illustrated by ab initio calculations on dilute magnetic alloys.

Original languageEnglish
Article number085801
Number of pages5
JournalJournal of Physics Condensed Matter
Volume34
Issue number8
DOIs
Publication statusPublished - 23-Feb-2022

Keywords

  • Boltzmann equation
  • DFT
  • Seebeck effect
  • semiclassical transport
  • spin-dependent transport
  • spin-orbit coupling
  • transverse transport

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