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    Observation of second-harmonic generation induced by pure spin currents

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    Issue Date
    2010-11
    Author
    Werake, Lalani Kumari
    Zhao, Hui
    Publisher
    Nature Publishing Group
    Type
    Other
    Published Version
    http://www.nature.com/nphys/journal/v6/n11/abs/nphys1742.html
    Version
    http://arxiv.org/abs/1102.1784v1
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    Abstract
    Spintronics, where the spin of electrons is used to carry information, is a rapidly growing area of research. There are several techniques for generating pure spin currents; however, there is no method that can directly detect them, largely because they carry no net charge current and no net magnetization. At present, studies of pure spin currents rely on measuring the induced spin accumulation with either optical techniques or spin-valve configurations. However, spin accumulation does not directly reflect the spatial distribution or temporal dynamics of the pure spin current, and therefore does not give a real-time or real-space measurement. Here we demonstrate a second-order nonlinear optical effect of the pure spin current that has never been explored before, and show that it can be used for the non-invasive, non-destructive and real-time imaging of pure spin currents. The detection scheme can be applied in a wide range of materials with different electronic band structures because it does not rely on optical resonances. Furthermore, the control of nonlinear optical properties of materials with pure spin currents may have potential applications in photonics integrated with spintronics.
    Description
    Permissions were not obtained for sharing the full text of this article. Full text is available at arXiv; see link in this record.
    URI
    http://hdl.handle.net/1808/7185
    DOI
    https://doi.org/10.1038/nphys1742
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    L.K. Werake and Hui Zhao, Observation of second-harmonic generation induced by pure spin currents, Nature Physics 6, 875 2010.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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