IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v6y2015i1d10.1038_ncomms7627.html
   My bibliography  Save this article

Quantum Hall effect on top and bottom surface states of topological insulator (Bi1−xSbx)2Te3 films

Author

Listed:
  • R. Yoshimi

    (University of Tokyo)

  • A. Tsukazaki

    (Institute for Materials Research, Tohoku University
    PRESTO, Japan Science and Technology Agency (JST))

  • Y. Kozuka

    (University of Tokyo)

  • J. Falson

    (University of Tokyo)

  • K.S. Takahashi

    (RIKEN Center for Emergent Matter Science (CEMS))

  • J.G. Checkelsky

    (University of Tokyo
    Present address: Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.)

  • N. Nagaosa

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS))

  • M. Kawasaki

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS))

  • Y. Tokura

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS))

Abstract

The three-dimensional topological insulator is a novel state of matter characterized by two-dimensional metallic Dirac states on its surface. To verify the topological nature of the surface states, Bi-based chalcogenides such as Bi2Se3, Bi2Te3, Sb2Te3 and their combined/mixed compounds have been intensively studied. Here, we report the realization of the quantum Hall effect on the surface Dirac states in (Bi1−xSbx)2Te3 films. With electrostatic gate-tuning of the Fermi level in the bulk band gap under magnetic fields, the quantum Hall states with filling factor ±1 are resolved. Furthermore, the appearance of a quantum Hall plateau at filling factor zero reflects a pseudo-spin Hall insulator state when the Fermi level is tuned in between the energy levels of the non-degenerate top and bottom surface Dirac points. The observation of the quantum Hall effect in three-dimensional topological insulator films may pave a way toward topological insulator-based electronics.

Suggested Citation

  • R. Yoshimi & A. Tsukazaki & Y. Kozuka & J. Falson & K.S. Takahashi & J.G. Checkelsky & N. Nagaosa & M. Kawasaki & Y. Tokura, 2015. "Quantum Hall effect on top and bottom surface states of topological insulator (Bi1−xSbx)2Te3 films," Nature Communications, Nature, vol. 6(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7627
    DOI: 10.1038/ncomms7627
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms7627
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms7627?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
    ---><---

    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:6:y:2015:i:1:d:10.1038_ncomms7627. 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.