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Thermoelectric current in a graphene Cooper pair splitter

Author

Listed:
  • Z. B. Tan

    (Aalto University
    Southern University of Science and Technology)

  • A. Laitinen

    (Aalto University)

  • N. S. Kirsanov

    (Aalto University
    Terra Quantum AG
    Moscow Institute of Physics and Technology
    University of Chicago)

  • A. Galda

    (University of Chicago
    Argonne National Laboratory)

  • V. M. Vinokur

    (University of Chicago
    Argonne National Laboratory)

  • M. Haque

    (Aalto University)

  • A. Savin

    (Aalto University)

  • D. S. Golubev

    (Aalto University)

  • G. B. Lesovik

    (Terra Quantum AG
    Moscow Institute of Physics and Technology)

  • P. J. Hakonen

    (Aalto University
    Aalto University)

Abstract

Generation of electric voltage in a conductor by applying a temperature gradient is a fundamental phenomenon called the Seebeck effect. This effect and its inverse is widely exploited in diverse applications ranging from thermoelectric power generators to temperature sensing. Recently, a possibility of thermoelectricity arising from the interplay of the non-local Cooper pair splitting and the elastic co-tunneling in the hybrid normal metal-superconductor-normal metal structures was predicted. Here, we report the observation of the non-local Seebeck effect in a graphene-based Cooper pair splitting device comprising two quantum dots connected to an aluminum superconductor and present a theoretical description of this phenomenon. The observed non-local Seebeck effect offers an efficient tool for producing entangled electrons.

Suggested Citation

  • Z. B. Tan & A. Laitinen & N. S. Kirsanov & A. Galda & V. M. Vinokur & M. Haque & A. Savin & D. S. Golubev & G. B. Lesovik & P. J. Hakonen, 2021. "Thermoelectric current in a graphene Cooper pair splitter," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20476-7
    DOI: 10.1038/s41467-020-20476-7
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    Cited by:

    1. 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.

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