Magnon polarons in the spin seebeck effect

Journal article (2016)

Authors

Takashi Kikkawa Tohoku University
K. Shen Kavli institute of nanoscience Delft, QN/Bauer Group - AS
Benedetta Flebus Universiteit Utrecht
Rembert A. Duine Eindhoven University of Technology, Universiteit Utrecht
K. Uchida Japan Science and Technology Agency, Tohoku University, National Institute for Materials Science
Zhiyong Qiu Japan Science and Technology Agency, Tohoku University
G.E. Bauer Center for Spintronics Research Network, Tohoku University, QN/Bauer Group - AS , Kavli institute of nanoscience Delft
E Saitoh Tohoku University, Japan Atomic Energy Agency, Japan Science and Technology Agency
Research Group
QN/Bauer Group (AS) (TU Delft)
Copyright: © 2016 Takashi Kikkawa, K. Shen, Benedetta Flebus, Rembert A. Duine, Ken Ichi Uchida, Zhiyong Qiu, G.E. Bauer, Eiji Saitoh
DOI
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https://doi.org/10.1103/PhysRevLett.117.207203
More Info
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Published Date

10-11-2016

Language

English

Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/Bauer Group

Abstract

Sharp structures in the magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/Y3Fe5O12 at low temperatures are attributed to the magnon-phonon interaction. Experimental results are well reproduced by a Boltzmann theory that includes magnetoelastic coupling. The SSE anomalies coincide with magnetic fields tuned to the threshold of magnon-polaron formation. The effect gives insight into the relative quality of the lattice and magnetization dynamics.