Magnon polarons in the spin seebeck effect

Takashi Kikkawa, Ka Shen, Benedetta Flebus, Rembert A. Duine, Ken Ichi Uchida, Zhiyong Qiu, Gerrit E.W. Bauer, Eiji Saitoh

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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.

Original languageEnglish
Article number207203
Number of pages6
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 10 Nov 2016


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