IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v9y2018i1d10.1038_s41467-018-04939-6.html
   My bibliography  Save this article

Direct visualization of current-induced spin accumulation in topological insulators

Author

Listed:
  • Yang Liu

    (National University of Singapore)

  • Jean Besbas

    (National University of Singapore)

  • Yi Wang

    (National University of Singapore)

  • Pan He

    (National University of Singapore)

  • Mengji Chen

    (National University of Singapore)

  • Dapeng Zhu

    (National University of Singapore)

  • Yang Wu

    (National University of Singapore)

  • Jong Min Lee

    (National University of Singapore)

  • Lan Wang

    (School of Science, Department of Physics)

  • Jisoo Moon

    (Rutgers, The State University of New Jersey)

  • Nikesh Koirala

    (Rutgers, The State University of New Jersey)

  • Seongshik Oh

    (Rutgers, The State University of New Jersey)

  • Hyunsoo Yang

    (National University of Singapore)

Abstract

Charge-to-spin conversion in various materials is the key for the fundamental understanding of spin-orbitronics and efficient magnetization manipulation. Here we report the direct spatial imaging of current-induced spin accumulation at the channel edges of Bi2Se3 and BiSbTeSe2 topological insulators as well as Pt by a scanning photovoltage microscope at room temperature. The spin polarization is along the out-of-plane direction with opposite signs for the two channel edges. The accumulated spin direction reverses sign upon changing the current direction and the detected spin signal shows a linear dependence on the magnitude of currents, indicating that our observed phenomena are current-induced effects. The spin Hall angle of Bi2Se3, BiSbTeSe2, and Pt is determined to be 0.0085, 0.0616, and 0.0085, respectively. Our results open up the possibility of optically detecting the current-induced spin accumulations, and thus point towards a better understanding of the interaction between spins and circularly polarized light.

Suggested Citation

  • Yang Liu & Jean Besbas & Yi Wang & Pan He & Mengji Chen & Dapeng Zhu & Yang Wu & Jong Min Lee & Lan Wang & Jisoo Moon & Nikesh Koirala & Seongshik Oh & Hyunsoo Yang, 2018. "Direct visualization of current-induced spin accumulation in topological insulators," Nature Communications, Nature, vol. 9(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04939-6
    DOI: 10.1038/s41467-018-04939-6
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-018-04939-6
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-018-04939-6?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Haozhe Yang & Eva Schmoranzerová & Pyunghwa Jang & Jayshankar Nath & Thomas Guillet & Isabelle Joumard & Stéphane Auffret & Matthieu Jamet & Petr Němec & Gilles Gaudin & Ioan-Mihai Miron, 2022. "Helicity dependent photoresistance measurement vs. beam-shift thermal gradient," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04939-6. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.