title: Magnon Polarons in the Spin Seebeck Effect.
abstract: Sharp structures in the magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/Y_{3}Fe_{5}O_{12} 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.
authors.affiliation: Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.|WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kikkawa
authors.affiliation: Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
authors.forename: Ka
authors.initials: K
authors.lastname: Shen
authors.affiliation: Institute for Theoretical Physics and Center for Extreme Matter and Emergent Phenomena, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands.
authors.forename: Benedetta
authors.initials: B
authors.lastname: Flebus
authors.affiliation: Institute for Theoretical Physics and Center for Extreme Matter and Emergent Phenomena, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands.|Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: Rembert A
authors.initials: RA
authors.lastname: Duine
authors.affiliation: Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.|PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Japan.|Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan.
authors.forename: Ken-Ichi
authors.initials: KI
authors.lastname: Uchida
authors.affiliation: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.|Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Sendai 980-8577, Japan.
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Qiu
authors.affiliation: Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.|WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.|Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.|Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan.
authors.forename: Gerrit E W
authors.initials: GE
authors.lastname: Bauer
authors.affiliation: Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.|WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.|Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan.|Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Sendai 980-8577, Japan.|Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Saitoh