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

doi:10.1103/PhysRevLett.117.207203

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

^*Corresponding author for this work

QN/Bauer Group

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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.

Original language	English
Article number	207203
Number of pages	6
Journal	Physical Review Letters
Volume	117
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.117.207203
Publication status	Published - 10 Nov 2016

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10.1103/PhysRevLett.117.207203

PhysRevLett.117.207203Final published version, 1.13 MBLicence: CC BY

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title = "Magnon polarons in the spin seebeck effect",

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.",

author = "Takashi Kikkawa and Ka Shen and Benedetta Flebus and Duine, {Rembert A.} and Uchida, {Ken Ichi} and Zhiyong Qiu and Bauer, {Gerrit E.W.} and Eiji Saitoh",

year = "2016",

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doi = "10.1103/PhysRevLett.117.207203",

language = "English",

volume = "117",

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AU - Kikkawa, Takashi

AU - Shen, Ka

AU - Flebus, Benedetta

AU - Duine, Rembert A.

AU - Uchida, Ken Ichi

AU - Qiu, Zhiyong

AU - Bauer, Gerrit E.W.

AU - Saitoh, Eiji

PY - 2016/11/10

Y1 - 2016/11/10

N2 - 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.

AB - 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.

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VL - 117

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

M1 - 207203

ER -

Magnon polarons in the spin seebeck effect

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