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, and Sebastian T. B. Goennenwein
Phys. Rev. B 88, 094410 – Published 9 September 2013

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.

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  • Received 19 June 2013

DOI:https://doi.org/10.1103/PhysRevB.88.094410

©2013 American Physical Society

Authors & Affiliations

Michael Schreier1,*, Akashdeep Kamra2, Mathias Weiler1,†, Jiang Xiao3, Gerrit E. W. Bauer2,4, Rudolf Gross1,5, and Sebastian T. B. Goennenwein1

  • 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany
  • 2Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands
  • 3Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai, China
  • 4Institute for Materials Research and WPI-AIMR, Tohoku University, Sendai, Japan
  • 5Physik Department, Technische Universität München, Garching, Germany

  • *michael.schreier@wmi.badw.de
  • Present address: National Institute of Standards and Technology, Boulder, CO, USA.

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Issue

Vol. 88, Iss. 9 — 1 September 2013

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