IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v7y2016i1d10.1038_ncomms10957.html
   My bibliography  Save this article

Stable topological insulators achieved using high energy electron beams

Author

Listed:
  • Lukas Zhao

    (The City College of New York, CUNY)

  • Marcin Konczykowski

    (Laboratoire des Solides Irradiés, École Polytechnique, CNRS, CEA, Université Paris-Saclay)

  • Haiming Deng

    (The City College of New York, CUNY)

  • Inna Korzhovska

    (The City College of New York, CUNY)

  • Milan Begliarbekov

    (The City College of New York, CUNY)

  • Zhiyi Chen

    (The City College of New York, CUNY)

  • Evangelos Papalazarou

    (Laboratoire de Physique des Solides, CNRS, Université Paris-Saclay, Université Paris-Sud)

  • Marino Marsi

    (Laboratoire de Physique des Solides, CNRS, Université Paris-Saclay, Université Paris-Sud)

  • Luca Perfetti

    (Laboratoire des Solides Irradiés, École Polytechnique, CNRS, CEA, Université Paris-Saclay)

  • Andrzej Hruban

    (Institute of Electronic Materials Technology)

  • Agnieszka Wołoś

    (Institute of Physics, Polish Academy of Sciences
    Faculty of Physics, University of Warsaw)

  • Lia Krusin-Elbaum

    (The City College of New York, CUNY)

Abstract

Topological insulators are potentially transformative quantum solids with metallic surface states which have Dirac band structure and are immune to disorder. Ubiquitous charged bulk defects, however, pull the Fermi energy into the bulk bands, denying access to surface charge transport. Here we demonstrate that irradiation with swift (∼2.5 MeV energy) electron beams allows to compensate these defects, bring the Fermi level back into the bulk gap and reach the charge neutrality point (CNP). Controlling the beam fluence, we tune bulk conductivity from p- (hole-like) to n-type (electron-like), crossing the Dirac point and back, while preserving the Dirac energy dispersion. The CNP conductance has a two-dimensional character on the order of ten conductance quanta and reveals, both in Bi2Te3 and Bi2Se3, the presence of only two quantum channels corresponding to two topological surfaces. The intrinsic quantum transport of the topological states is accessible disregarding the bulk size.

Suggested Citation

  • Lukas Zhao & Marcin Konczykowski & Haiming Deng & Inna Korzhovska & Milan Begliarbekov & Zhiyi Chen & Evangelos Papalazarou & Marino Marsi & Luca Perfetti & Andrzej Hruban & Agnieszka Wołoś & Lia Krus, 2016. "Stable topological insulators achieved using high energy electron beams," Nature Communications, Nature, vol. 7(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10957
    DOI: 10.1038/ncomms10957
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms10957
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms10957?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. Haiming Deng & Lukas Zhao & Kyungwha Park & Jiaqiang Yan & Kamil Sobczak & Ayesha Lakra & Entela Buzi & Lia Krusin-Elbaum, 2022. "Topological surface currents accessed through reversible hydrogenation of the three-dimensional bulk," Nature Communications, Nature, vol. 13(1), pages 1-8, 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:7:y:2016:i:1:d:10.1038_ncomms10957. 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.