IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v11y2020i1d10.1038_s41467-020-19487-1.html
   My bibliography  Save this article

A new Majorana platform in an Fe-As bilayer superconductor

Author

Listed:
  • Wenyao Liu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lu Cao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Shiyu Zhu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lingyuan Kong

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Guangwei Wang

    (Beijing Normal University)

  • Michał Papaj

    (Massachusetts Institute of Technology)

  • Peng Zhang

    (University of Tokyo)

  • Ya-Bin Liu

    (Zhejiang University)

  • Hui Chen

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Geng Li

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Fazhi Yang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Takeshi Kondo

    (University of Tokyo)

  • Shixuan Du

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Guang-Han Cao

    (Zhejiang University)

  • Shik Shin

    (University of Tokyo)

  • Liang Fu

    (Massachusetts Institute of Technology)

  • Zhiping Yin

    (Beijing Normal University)

  • Hong-Jun Gao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Hong Ding

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

Abstract

Iron-chalcogenide superconductors have emerged as a promising Majorana platform for topological quantum computation. By combining topological band and superconductivity in a single material, they provide significant advantage to realize isolated Majorana zero modes. However, iron-chalcogenide superconductors, especially Fe(Te,Se), suffer from strong inhomogeneity which may hamper their practical application. In addition, some iron-pnictide superconductors have been demonstrated to have topological surface states, yet no Majorana zero mode has been observed inside their vortices, raising a question of universality about this new Majorana platform. In this work, through angle-resolved photoemission spectroscopy and scanning tunneling microscopy/spectroscopy measurement, we identify Dirac surface states and Majorana zero modes, respectively, for the first time in an iron-pnictide superconductor, CaKFe4As4. More strikingly, the multiple vortex bound states with integer-quantization sequences can be accurately reproduced by our model calculation, firmly establishing Majorana nature of the zero mode.

Suggested Citation

  • Wenyao Liu & Lu Cao & Shiyu Zhu & Lingyuan Kong & Guangwei Wang & Michał Papaj & Peng Zhang & Ya-Bin Liu & Hui Chen & Geng Li & Fazhi Yang & Takeshi Kondo & Shixuan Du & Guang-Han Cao & Shik Shin & Li, 2020. "A new Majorana platform in an Fe-As bilayer superconductor," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19487-1
    DOI: 10.1038/s41467-020-19487-1
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-020-19487-1
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-020-19487-1?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. Lun-Hui Hu & Rui-Xing Zhang, 2023. "Topological superconducting vortex from trivial electronic bands," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Lun-Hui Hu & Rui-Xing Zhang, 2024. "Dislocation Majorana bound states in iron-based superconductors," Nature Communications, Nature, vol. 15(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:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19487-1. 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.