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

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Sharp structures in magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/Y$_{3}$Fe$_{5}$O$_{12}$ (YIG) at low temperatures are attributed to the magnon-phonon interaction. Experimental results are well reproduced by a Boltzmann theory that includes the magnetoelastic coupling (MEC). 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
Pages (from-to)	1-6
Journal	Physical Review Letters
Volume	117
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.117.207203
Publication status	Published - 11 Nov 2016

Bibliographical note

6 pages, 4 figures, 1 table

Keywords

cond-mat.mtrl-sci

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10.1103/PhysRevLett.117.207203

polaronsFinal published version, 1.13 MB

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title = "Magnon Polarons in the Spin Seebeck Effect",

abstract = "Sharp structures in magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/Y\$\_\{3\}\$Fe\$\_\{5\}\$O\$\_\{12\}\$ (YIG) at low temperatures are attributed to the magnon-phonon interaction. Experimental results are well reproduced by a Boltzmann theory that includes the magnetoelastic coupling (MEC). 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.",

keywords = "cond-mat.mtrl-sci",

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

note = "6 pages, 4 figures, 1 table",

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doi = "10.1103/PhysRevLett.117.207203",

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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

N1 - 6 pages, 4 figures, 1 table

PY - 2016/11/11

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N2 - Sharp structures in magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/Y$_{3}$Fe$_{5}$O$_{12}$ (YIG) at low temperatures are attributed to the magnon-phonon interaction. Experimental results are well reproduced by a Boltzmann theory that includes the magnetoelastic coupling (MEC). 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 magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/Y$_{3}$Fe$_{5}$O$_{12}$ (YIG) at low temperatures are attributed to the magnon-phonon interaction. Experimental results are well reproduced by a Boltzmann theory that includes the magnetoelastic coupling (MEC). 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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DO - 10.1103/PhysRevLett.117.207203

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Magnon Polarons in the Spin Seebeck Effect

Abstract

Bibliographical note

Keywords

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