Observation of the spin peltier effect for magnetic insulators

J. Flipse, F. K. Dejene, D. Wagenaar, G. E.W. Bauer, J. Ben Youssef, B. J. Van Wees

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196 Citations (Scopus)


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.

Original languageEnglish
Article number027601
JournalPhysical Review Letters
Issue number2
Publication statusPublished - 2014 Jul 7


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