IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v10y2019i1d10.1038_s41467-019-10233-w.html
   My bibliography  Save this article

Proximity-induced surface superconductivity in Dirac semimetal Cd3As2

Author

Listed:
  • Ce Huang

    (Fudan University
    Fudan University)

  • Benjamin T. Zhou

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Huiqin Zhang

    (Fudan University
    Fudan University)

  • Bingjia Yang

    (Fudan University
    Fudan University)

  • Ran Liu

    (Fudan University
    Fudan University)

  • Hanwen Wang

    (Chinese Academy of Sciences)

  • Yimin Wan

    (Fudan University
    Fudan University)

  • Ke Huang

    (Peking University)

  • Zhiming Liao

    (The University of Queensland)

  • Enze Zhang

    (Fudan University
    Fudan University)

  • Shanshan Liu

    (Fudan University
    Fudan University)

  • Qingsong Deng

    (University of Technology)

  • Yanhui Chen

    (University of Technology)

  • Xiaodong Han

    (University of Technology)

  • Jin Zou

    (The University of Queensland
    The University of Queensland)

  • Xi Lin

    (Peking University)

  • Zheng Han

    (Chinese Academy of Sciences)

  • Yihua Wang

    (Fudan University
    Fudan University)

  • Kam Tuen Law

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Faxian Xiu

    (Fudan University
    Fudan University
    Collaborative Innovation Center of Advanced Microstructures)

Abstract

Cd3As2 is a three-dimensional Dirac semimetal with separated Dirac points in momentum space. In spite of extensive transport and spectroscopic studies on its exotic properties, the evidence of superconductivity in its surface states remains elusive. Here, we report the observation of proximity-induced surface superconductivity in Nb/Cd3As2 hybrid structures. Our four-terminal transport measurement identifies a pronounced proximity-induced pairing gap (gap size comparable to Nb) on the surfaces, which exhibits a flat conductance plateau in differential conductance spectra, consistent with our theoretical simulations. The surface supercurrent from Nb/Cd3As2/Nb junctions is also achieved with a Fraunhofer/SQUID-like pattern under out-of-plane/in-plane magnetic fields, respectively. The resultant mapping shows a predominant distribution on the top and bottom surfaces as the bulk carriers are depleted, which can be regarded as a higher dimensional analog of edge supercurrent in two-dimensional quantum spin Hall insulators. Our study provides the evidence of surface superconductivity in Dirac semimetals.

Suggested Citation

  • Ce Huang & Benjamin T. Zhou & Huiqin Zhang & Bingjia Yang & Ran Liu & Hanwen Wang & Yimin Wan & Ke Huang & Zhiming Liao & Enze Zhang & Shanshan Liu & Qingsong Deng & Yanhui Chen & Xiaodong Han & Jin Z, 2019. "Proximity-induced surface superconductivity in Dirac semimetal Cd3As2," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10233-w
    DOI: 10.1038/s41467-019-10233-w
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-019-10233-w
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/s41467-019-10233-w?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. Le Duc Anh & Keita Ishihara & Tomoki Hotta & Kohdai Inagaki & Hideki Maki & Takahiro Saeki & Masaki Kobayashi & Masaaki Tanaka, 2024. "Large superconducting diode effect in ion-beam patterned Sn-based superconductor nanowire/topological Dirac semimetal planar heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Sebastian Schimmel & Yanina Fasano & Sven Hoffmann & Julia Besproswanny & Laura Teresa Corredor Bohorquez & JoaquĆ­n Puig & Bat-Chen Elshalem & Beena Kalisky & Grigory Shipunov & Danny Baumann & Saicha, 2024. "Surface superconductivity in the topological Weyl semimetal t-PtBi2," Nature Communications, Nature, vol. 15(1), pages 1-6, 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:10:y:2019:i:1:d:10.1038_s41467-019-10233-w. 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.