Manipulations of inverse spin Hall effect in a FM/Pt/FM trilayer structure via RKKY interlayer interaction

ORAL

Abstract

We studied the inverse spin Hall effect (ISHE), ferromagnetic resonance and MOKE response in FM/NM/FM trilayer (NiFe/Pt/Co) as a function of the Pt layer thickness, d. We found evidence that non-local magnon drag influences the ISHE response in the Pt layer via the RKKY interaction, where the exchange coupling constant oscillates between parallel and antiparallel FM magnetization configuration as a function of d. In particular the ISHE response in the parallel FM configuration was found to be four times larger than that in the conventional Co/Pt or NiFe/Pt bilayer structures.

*Work supported by the MURI-AFOSR grant FA9550-14-1-0037, and the MRSEC facility center supported by NSF-MRSEC grant DMR-1121252.

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Authors

  • Haoliang Liu

    • Department of Physics and Astronomy, University of Utah
    • Department of Physics & Astronomy, University of Utah

  • Dali Sun

    • Department of Physics and Astronomy, University of Utah

  • Chuang Zhang

    • Department of Physics and Astronomy, University of Utah

  • Matthew Groesbeck

    • Department of Physics and Astronomy, University of Utah

  • Ryan Mclaughlin

    • Department of Physics and Astronomy, University of Utah

  • Valy Vardeny

    • Department of Physics and Astronomy, University of Utah