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Thermal spin current from a ferromagnet to silicon by Seebeck spin tunnelling

Author

Listed:
  • Jean-Christophe Le Breton

    (Netherlands Foundation for Fundamental Research on Matter (FOM))

  • Sandeep Sharma

    (Netherlands Foundation for Fundamental Research on Matter (FOM)
    National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center
    Zernike Institute for Advanced Materials, Physics of Nanodevices, University of Groningen, 9747 AG)

  • Hidekazu Saito

    (National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center)

  • Shinji Yuasa

    (National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center)

  • Ron Jansen

    (National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center)

Abstract

Turning on the heat in spintronics A spin equivalent of the Seebeck effect is known in various metallic, insulating and semiconductor ferromagnets. In this spin effect, a temperature difference over a ferromagnetic strip leads to a spin voltage, where spin-up electrons accumulate on one side of the strip and spin-down electrons gather on the other. Le Breton et al. now report a rather different phenomenon, in which a thermal gradient over a ferromagnet/oxide/silicon device drives Seebeck electron spin tunnelling through an oxide barrier. This indicates a new mechanism for spin injection into a non-magnetic semiconductor as well as for a functional use of heat in spintronics devices.

Suggested Citation

  • Jean-Christophe Le Breton & Sandeep Sharma & Hidekazu Saito & Shinji Yuasa & Ron Jansen, 2011. "Thermal spin current from a ferromagnet to silicon by Seebeck spin tunnelling," Nature, Nature, vol. 475(7354), pages 82-85, July.
    • Handle: RePEc:nat:nature:v:475:y:2011:i:7354:d:10.1038_nature10224
    DOI: 10.1038/nature10224
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    Cited by:

    1. Wang, Zheng-Chuan, 2022. "The unification of electric and thermal spin transfer torque in spintronics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 585(C).

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