title: Observation of the spin Peltier effect for magnetic insulators.
abstract: We report the observation of the spin Peltier effect (SPE) in the ferrimagnetic insulator yttrium iron garnet (YIG), i.e., a heat current generated by a spin current flowing through a platinum (Pt)|YIG interface. The effect can be explained by the spin transfer torque that transforms the spin current in the Pt into a magnon current in the YIG. Via magnon-phonon interactions the magnetic fluctuations modulate the phonon temperature that is detected by a thermopile close to the interface. By finite-element modeling we verify the reciprocity between the spin Peltier and spin Seebeck effect. The observed strong coupling between thermal magnons and phonons in YIG is attractive for nanoscale cooling techniques.
authors: Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors: J
authors: J
authors: Flipse
authors: Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors: F K
authors: FK
authors: Dejene
authors: Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors: D
authors: D
authors: Wagenaar
authors: Kavli Institute of NanoScience, Delft University of Technology, 2628 CJ Delft, The Netherlands and Institute for Materials Research and WPI-AIMR, Tohoku University, 980-8577 Sendai, Japan.
authors: G E W
authors: GE
authors: Bauer
authors: Université de Bretagne Occidentale, Laboratoire de Magnétisme de Bretagne CNRS, 6 Avenue Le Gorgeu, 29285 Brest, France.
authors: J
authors: J
authors: Ben Youssef
authors: Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors: B J
authors: BJ
authors: van Wees