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5d iridium oxide as a material for spin-current detection

Author

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  • Kohei Fujiwara

    (RIKEN Advanced Science Institute
    Present address: The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan)

  • Yasuhiro Fukuma

    (RIKEN Advanced Science Institute
    Present address: Frontier Research Academy for Young Researchers, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan)

  • Jobu Matsuno

    (RIKEN Advanced Science Institute
    Present addresses: RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan)

  • Hiroshi Idzuchi

    (Institute for Solid State Physics, University of Tokyo)

  • Yasuhiro Niimi

    (Institute for Solid State Physics, University of Tokyo)

  • YoshiChika Otani

    (RIKEN Advanced Science Institute
    Institute for Solid State Physics, University of Tokyo
    Present addresses: RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan)

  • Hidenori Takagi

    (RIKEN Advanced Science Institute
    University of Tokyo)

Abstract

Devices based on pure spin currents have been attracting increasing attention as key ingredients for low-dissipation electronics. To integrate such spintronics devices into charge-based technologies, electric detection of spin currents is essential. The inverse spin Hall effect converts a spin current into an electric voltage through spin-orbit coupling. Noble metals such as Pt and Pd, and also Cu-based alloys, have been regarded as potential materials for a spin-current injector, owing to the large direct spin Hall effect. Their spin Hall resistivity ρSH, representing the performance as a detector, is not large enough, however, due mainly because of their low charge resistivity. Here we report that a binary 5d transition metal oxide, iridium oxide, overcomes the limitations encountered in noble metals and Cu-based alloys and shows a very large ρSH~38 μΩ cm at room temperature.

Suggested Citation

  • Kohei Fujiwara & Yasuhiro Fukuma & Jobu Matsuno & Hiroshi Idzuchi & Yasuhiro Niimi & YoshiChika Otani & Hidenori Takagi, 2013. "5d iridium oxide as a material for spin-current detection," Nature Communications, Nature, vol. 4(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3893
    DOI: 10.1038/ncomms3893
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