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Observation of the Spin Peltier Effect for Magnetic Insulators

J. Flipse, F. K. Dejene, D. Wagenaar, G. E. W. Bauer, J. Ben Youssef, and B. J. van Wees
Phys. Rev. Lett. 113, 027601 – Published 7 July 2014
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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.

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  • Received 19 November 2013

DOI:https://doi.org/10.1103/PhysRevLett.113.027601

© 2014 American Physical Society

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Putting a New Spin on Heat Flow

Published 7 July 2014

Researchers demonstrate, for the first time, the spin Peltier effect, in which a spin current in a metal causes heat flow in an adjoining magnet.

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Authors & Affiliations

J. Flipse1,*, F. K. Dejene1, D. Wagenaar1, G. E. W. Bauer2,3, J. Ben Youssef4, and B. J. van Wees1

  • 1Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • 2Kavli Institute of NanoScience, Delft University of Technology, 2628 CJ Delft, The Netherlands
  • 3Institute for Materials Research and WPI-AIMR, Tohoku University, 980-8577 Sendai, Japan
  • 4Université de Bretagne Occidentale, Laboratoire de Magnétisme de Bretagne CNRS, 6 Avenue Le Gorgeu, 29285 Brest, France

  • *J.Flipse@rug.nl

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Issue

Vol. 113, Iss. 2 — 11 July 2014

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