IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v460y2009i7259d10.1038_nature08234.html
   My bibliography  Save this article

A tunable topological insulator in the spin helical Dirac transport regime

Author

Listed:
  • D. Hsieh

    (Joseph Henry Laboratories of Physics)

  • Y. Xia

    (Joseph Henry Laboratories of Physics)

  • D. Qian

    (Joseph Henry Laboratories of Physics
    Shanghai Jiao Tong University)

  • L. Wray

    (Joseph Henry Laboratories of Physics)

  • J. H. Dil

    (Swiss Light Source, Paul Scherrer Institute, CH-5232, Villigen, Switzerland
    Physik-Institute, Universitat Zurich-Irchel)

  • F. Meier

    (Swiss Light Source, Paul Scherrer Institute, CH-5232, Villigen, Switzerland
    Physik-Institute, Universitat Zurich-Irchel)

  • J. Osterwalder

    (Physik-Institute, Universitat Zurich-Irchel)

  • L. Patthey

    (Swiss Light Source, Paul Scherrer Institute, CH-5232, Villigen, Switzerland)

  • J. G. Checkelsky

    (Joseph Henry Laboratories of Physics)

  • N. P. Ong

    (Joseph Henry Laboratories of Physics)

  • A. V. Fedorov

    (Advanced Light Source, Lawrence Berkeley Laboratory, Berkeley, California 94720, USA)

  • H. Lin

    (Northeastern University, Boston, Massachusetts 02115, USA)

  • A. Bansil

    (Northeastern University, Boston, Massachusetts 02115, USA)

  • D. Grauer

    (Department of Chemistry,)

  • Y. S. Hor

    (Department of Chemistry,)

  • R. J. Cava

    (Department of Chemistry,)

  • M. Z. Hasan

    (Joseph Henry Laboratories of Physics
    Princeton Center for Complex Materials,
    Princeton Institute for Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544, USA)

Abstract

Topological insulators: tuned to protection Helical Dirac fermions are relativistic particles which, unlike conventional Dirac fermions in graphene, have a net intrinsic angular momentum (spin) interlocked with their translational momentum, a property desirable for spintronic and computing technologies. Recently, it was proposed that such helical Dirac systems could be realized in so-called topological insulators — materials in which strong spin–orbit coupling gives rise to a bulk insulating gap and surface states protected against scattering by time-reversal symmetry. Hsieh et al. combine spin- and momentum-resolved spectroscopic imaging techniques to report the experimental realization of such a system in a bismuth-based material, where the experiments reveal nearly 100% spin polarization even up to room temperature. Crucially, the paper reports tunability of the fermion density, via doping, enabling the authors to drive the system to the so-called topological transport regime, which is believed to facilitate spin transport without heat dissipation.

Suggested Citation

  • D. Hsieh & Y. Xia & D. Qian & L. Wray & J. H. Dil & F. Meier & J. Osterwalder & L. Patthey & J. G. Checkelsky & N. P. Ong & A. V. Fedorov & H. Lin & A. Bansil & D. Grauer & Y. S. Hor & R. J. Cava & M., 2009. "A tunable topological insulator in the spin helical Dirac transport regime," Nature, Nature, vol. 460(7259), pages 1101-1105, August.
    • Handle: RePEc:nat:nature:v:460:y:2009:i:7259:d:10.1038_nature08234
    DOI: 10.1038/nature08234
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature08234
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature08234?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
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

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


    Cited by:

    1. Matthew Weiner & Xiang Ni & Andrea Alù & Alexander B. Khanikaev, 2022. "Synthetic Pseudo-Spin-Hall effect in acoustic metamaterials," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. Yuwei Zhao & Yue Lu & Huiping Li & Yongbin Zhu & You Meng & Na Li & Donghong Wang & Feng Jiang & Funian Mo & Changbai Long & Ying Guo & Xinliang Li & Zhaodong Huang & Qing Li & Johnny C. Ho & Jun Fan , 2022. "Few-layer bismuth selenide cathode for low-temperature quasi-solid-state aqueous zinc metal batteries," Nature Communications, Nature, vol. 13(1), pages 1-12, 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:nature:v:460:y:2009:i:7259:d:10.1038_nature08234. 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.