Spin Injection and Detection via the Anomalous Spin Hall Effect of a Ferromagnetic Metal

K. S. Das, B. J. Schoemaker, B J van Wees, Ivan J. Vera-Marun

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    Abstract

    We report a spin injection and detection mechanism via the anomalous Hall effect in a ferromagnetic metal. The anomalous spin Hall effect (ASHE) refers to the transverse spin current generated within the ferromagnet. We utilize the ASHE and its reciprocal effect to electrically inject and detect magnons in a magnetic insulator (yttrium iron garnet) in a nonlocal geometry. Our experiments reveal that permalloy has a comparable spin injection and detection efficiency to that of platinum, owing to the ASHE. We also demonstrate the tunability of the ASHE via the orientation of the permalloy magnetization, thus creating possibilities for spintronic applications.
    Original languageEnglish
    Article number220408(R)
    JournalPhysical Review B
    Volume96
    Issue number22
    Early online date21 Dec 2017
    DOIs
    Publication statusPublished - 21 Dec 2017

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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