IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v14y2023i1d10.1038_s41467-023-44111-3.html
   My bibliography  Save this article

Phase-dependent Andreev molecules and superconducting gap closing in coherently-coupled Josephson junctions

Author

Listed:
  • Sadashige Matsuo

    (Center for Emergent Matter Science, RIKEN)

  • Takaya Imoto

    (Center for Emergent Matter Science, RIKEN
    Tokyo University of Science)

  • Tomohiro Yokoyama

    (Osaka University)

  • Yosuke Sato

    (Center for Emergent Matter Science, RIKEN)

  • Tyler Lindemann

    (Purdue University
    Purdue University)

  • Sergei Gronin

    (Purdue University)

  • Geoffrey C. Gardner

    (Purdue University)

  • Sho Nakosai

    (Nagoya University)

  • Yukio Tanaka

    (Nagoya University)

  • Michael J. Manfra

    (Purdue University
    Purdue University
    Purdue University
    Purdue University)

  • Seigo Tarucha

    (Center for Emergent Matter Science, RIKEN
    RIKEN Center for Quantum Computing, RIKEN)

Abstract

The Josephson junction (JJ) is an essential element of superconducting (SC) devices for both fundamental and applied physics. The short-range coherent coupling of two adjacent JJs forms Andreev molecule states (AMSs), which provide a new ingredient to engineer exotic SC phenomena such as topological SC states and Andreev qubits. Here we provide tunneling spectroscopy measurements on a device consisting of two electrically controllable planar JJs sharing a single SC electrode. We discover that Andreev spectra in the coupled JJ are highly modulated from those in the single JJs and possess phase-dependent AMS features reproduced in our numerical calculation. Notably, the SC gap closing due to the AMS formation is experimentally observed. Our results help in understanding SC transport derived from the AMS and promoting the use of AMS physics to engineer topological SC states and quantum information devices.

Suggested Citation

  • Sadashige Matsuo & Takaya Imoto & Tomohiro Yokoyama & Yosuke Sato & Tyler Lindemann & Sergei Gronin & Geoffrey C. Gardner & Sho Nakosai & Yukio Tanaka & Michael J. Manfra & Seigo Tarucha, 2023. "Phase-dependent Andreev molecules and superconducting gap closing in coherently-coupled Josephson junctions," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-44111-3
    DOI: 10.1038/s41467-023-44111-3
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-023-44111-3
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/s41467-023-44111-3?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
    ---><---

    References listed on IDEAS

    as
    1. Marco Coraiola & Daniel Z. Haxell & Deividas Sabonis & Hannes Weisbrich & Aleksandr E. Svetogorov & Manuel Hinderling & Sofieke C. Kate & Erik Cheah & Filip Krizek & Rüdiger Schott & Werner Wegscheide, 2023. "Phase-engineering the Andreev band structure of a three-terminal Josephson junction," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    2. R. S. Deacon & A. Oiwa & J. Sailer & S. Baba & Y. Kanai & K. Shibata & K. Hirakawa & S. Tarucha, 2015. "Erratum: Cooper pair splitting in parallel quantum dot Josephson junctions," Nature Communications, Nature, vol. 6(1), pages 1-1, December.
    3. Antonio Fornieri & Alexander M. Whiticar & F. Setiawan & Elías Portolés & Asbjørn C. C. Drachmann & Anna Keselman & Sergei Gronin & Candice Thomas & Tian Wang & Ray Kallaher & Geoffrey C. Gardner & Er, 2019. "Evidence of topological superconductivity in planar Josephson junctions," Nature, Nature, vol. 569(7754), pages 89-92, May.
    4. Zhaoen Su & Alexandre B. Tacla & Moïra Hocevar & Diana Car & Sébastien R. Plissard & Erik P. A. M. Bakkers & Andrew J. Daley & David Pekker & Sergey M. Frolov, 2017. "Andreev molecules in semiconductor nanowire double quantum dots," Nature Communications, Nature, vol. 8(1), pages 1-6, December.
    5. Hechen Ren & Falko Pientka & Sean Hart & Andrew T. Pierce & Michael Kosowsky & Lukas Lunczer & Raimund Schlereth & Benedikt Scharf & Ewelina M. Hankiewicz & Laurens W. Molenkamp & Bertrand I. Halperin, 2019. "Topological superconductivity in a phase-controlled Josephson junction," Nature, Nature, vol. 569(7754), pages 93-98, May.
    6. R. S. Deacon & A. Oiwa & J. Sailer & S. Baba & Y. Kanai & K. Shibata & K. Hirakawa & S. Tarucha, 2015. "Cooper pair splitting in parallel quantum dot Josephson junctions," Nature Communications, Nature, vol. 6(1), pages 1-7, November.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Qingzhen Wang & Sebastiaan L. D. Haaf & Ivan Kulesh & Di Xiao & Candice Thomas & Michael J. Manfra & Srijit Goswami, 2023. "Triplet correlations in Cooper pair splitters realized in a two-dimensional electron gas," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    2. Tong Zhou & Matthieu C. Dartiailh & Kasra Sardashti & Jong E. Han & Alex Matos-Abiague & Javad Shabani & Igor Žutić, 2022. "Fusion of Majorana bound states with mini-gate control in two-dimensional systems," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. Antti Ranni & Fredrik Brange & Elsa T. Mannila & Christian Flindt & Ville F. Maisi, 2021. "Real-time observation of Cooper pair splitting showing strong non-local correlations," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    4. Gino V. Graziano & Mohit Gupta & Mihir Pendharkar & Jason T. Dong & Connor P. Dempsey & Chris Palmstrøm & Vlad S. Pribiag, 2022. "Selective control of conductance modes in multi-terminal Josephson junctions," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    5. Bhupendra Kumar & Sachin Verma & Tanuj Chamoli & Ajay, 2023. "Josephson transport across T-shaped and series-configured double quantum dots system at infinite- $$\textit{U}$$ U limit," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 96(12), pages 1-13, December.
    6. Marco Coraiola & Daniel Z. Haxell & Deividas Sabonis & Hannes Weisbrich & Aleksandr E. Svetogorov & Manuel Hinderling & Sofieke C. Kate & Erik Cheah & Filip Krizek & Rüdiger Schott & Werner Wegscheide, 2023. "Phase-engineering the Andreev band structure of a three-terminal Josephson junction," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    7. Daniel Z. Haxell & Marco Coraiola & Deividas Sabonis & Manuel Hinderling & Sofieke C. Kate & Erik Cheah & Filip Krizek & Rüdiger Schott & Werner Wegscheider & Wolfgang Belzig & Juan Carlos Cuevas & Fa, 2023. "Microwave-induced conductance replicas in hybrid Josephson junctions without Floquet—Andreev states," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    8. S. Reinhardt & T. Ascherl & A. Costa & J. Berger & S. Gronin & G. C. Gardner & T. Lindemann & M. J. Manfra & J. Fabian & D. Kochan & C. Strunk & N. Paradiso, 2024. "Link between supercurrent diode and anomalous Josephson effect revealed by gate-controlled interferometry," Nature Communications, Nature, vol. 15(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:14:y:2023:i:1:d:10.1038_s41467-023-44111-3. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.