IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v14y2023i1d10.1038_s41467-023-42454-5.html
   My bibliography  Save this article

Microwave excitation of atomic scale superconducting bound states

Author

Listed:
  • Janis Siebrecht

    (Max-Planck-Institut für Festkörperforschung)

  • Haonan Huang

    (Max-Planck-Institut für Festkörperforschung)

  • Piotr Kot

    (Max-Planck-Institut für Festkörperforschung)

  • Robert Drost

    (Max-Planck-Institut für Festkörperforschung)

  • Ciprian Padurariu

    (Universität Ulm)

  • Björn Kubala

    (Universität Ulm
    German Aerospace Center (DLR))

  • Joachim Ankerhold

    (Universität Ulm)

  • Juan Carlos Cuevas

    (Universidad Autónoma de Madrid)

  • Christian R. Ast

    (Max-Planck-Institut für Festkörperforschung)

Abstract

Magnetic impurities on superconductors lead to bound states within the superconducting gap, so called Yu-Shiba-Rusinov (YSR) states. They are parity protected, which enhances their lifetime, but makes it more difficult to excite them. Here, we realize the excitation of YSR states by microwaves facilitated by the tunnel coupling to another superconducting electrode in a scanning tunneling microscope (STM). We identify the excitation process through a family of anomalous microwave-assisted tunneling peaks originating from a second-order resonant Andreev process, in which the microwave excites the YSR state triggering a tunneling event transferring a total of two charges. We vary the amplitude and the frequency of the microwave to identify the energy threshold and the evolution of this excitation process. Our work sets an experimental basis and proof-of-principle for the manipulation of YSR states using microwaves with an outlook towards YSR qubits.

Suggested Citation

  • Janis Siebrecht & Haonan Huang & Piotr Kot & Robert Drost & Ciprian Padurariu & Björn Kubala & Joachim Ankerhold & Juan Carlos Cuevas & Christian R. Ast, 2023. "Microwave excitation of atomic scale superconducting bound states," Nature Communications, Nature, vol. 14(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42454-5
    DOI: 10.1038/s41467-023-42454-5
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-023-42454-5
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-023-42454-5?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:14:y:2023:i:1:d:10.1038_s41467-023-42454-5. 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.