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Thermal imaging of spin Peltier effect

Author

Listed:
  • Shunsuke Daimon

    (Institute for Materials Research, Tohoku University
    WPI Advanced Institute for Materials Research, Tohoku University)

  • Ryo Iguchi

    (Institute for Materials Research, Tohoku University)

  • Tomosato Hioki

    (Institute for Materials Research, Tohoku University)

  • Eiji Saitoh

    (Institute for Materials Research, Tohoku University
    WPI Advanced Institute for Materials Research, Tohoku University
    Center for Spintronics Research Network, Tohoku University
    Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency)

  • Ken-ichi Uchida

    (Institute for Materials Research, Tohoku University
    Center for Spintronics Research Network, Tohoku University
    PRESTO, Japan Science and Technology Agency
    Present address: National Institute for Materials Science, Tsukuba 305-0047, Japan)

Abstract

The Peltier effect modulates the temperature of a junction comprising two different conductors in response to charge currents across the junction, which is used in solid-state heat pumps and temperature controllers in electronics. Recently, in spintronics, a spin counterpart of the Peltier effect was observed. The ‘spin Peltier effect’ modulates the temperature of a magnetic junction in response to spin currents. Here we report thermal imaging of the spin Peltier effect; using active thermography technique, we visualize the temperature modulation induced by spin currents injected into a magnetic insulator from an adjacent metal. The thermal images reveal characteristic distribution of spin-current-induced heat sources, resulting in the temperature change confined only in the vicinity of the metal/insulator interface. This finding allows us to estimate the actual magnitude of the temperature modulation induced by the spin Peltier effect, which is more than one order of magnitude greater than previously believed.

Suggested Citation

  • Shunsuke Daimon & Ryo Iguchi & Tomosato Hioki & Eiji Saitoh & Ken-ichi Uchida, 2016. "Thermal imaging of spin Peltier effect," Nature Communications, Nature, vol. 7(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13754
    DOI: 10.1038/ncomms13754
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    Cited by:

    1. Huanyi Xue & Ruijie Qian & Weikang Lu & Xue Gong & Ludi Qin & Zhenyang Zhong & Zhenghua An & Lidong Chen & Wei Lu, 2023. "Direct observation of hot-electron-enhanced thermoelectric effects in silicon nanodevices," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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