Magnon, phonon, and electron temperature profiles and the spin Seebeck effect in magnetic insulator/normal metal hybrid structures

Michael Schreier, Akashdeep Kamra, Mathias Weiler, Jiang Xiao, Gerrit E.W. Bauer, Rudolf Gross, Sebastian T.B. Goennenwein

Research output: Contribution to journalArticlepeer-review

152 Citations (Scopus)

Abstract

We calculate the phonon, electron, and magnon temperature profiles in yttrium iron garnet/platinum bilayers by diffusive theory with appropriate boundary conditions, in particular taking into account interfacial thermal resistances. Our calculations show that in thin film hybrids, the interface magnetic heat conductance qualitatively affects the magnon temperature. Based on published material parameters we assess the degree of nonequilibrium at the yttrium iron garnet/platinum interface. The magnitude of the spin Seebeck effect derived from this approach compares well with experimental results for the longitudinal spin Seebeck effect. Additionally, we address the temperature profiles in the transverse spin Seebeck effect.

Original languageEnglish
Article number094410
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number9
DOIs
Publication statusPublished - 2013 Sep 9

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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