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Extreme electron–hole drag and negative mobility in the Dirac plasma of graphene

Author

Listed:
  • Leonid A. Ponomarenko

    (University of Lancaster
    University of Manchester)

  • Alessandro Principi

    (University of Manchester)

  • Andy D. Niblett

    (University of Lancaster)

  • Wendong Wang

    (University of Manchester)

  • Roman V. Gorbachev

    (University of Manchester)

  • Piranavan Kumaravadivel

    (University of Manchester)

  • Alexey I. Berdyugin

    (University of Manchester)

  • Alexey V. Ermakov

    (University of Manchester)

  • Sergey Slizovskiy

    (University of Manchester
    University of Manchester)

  • Kenji Watanabe

    (National Institute for Materials Science)

  • Takashi Taniguchi

    (National Institute for Materials Science)

  • Qi Ge

    (National University of Singapore)

  • Vladimir I. Fal’ko

    (University of Manchester
    University of Manchester)

  • Laurence Eaves

    (University of Nottingham)

  • Mark T. Greenaway

    (University of Nottingham
    Loughborough University)

  • Andre K. Geim

    (University of Manchester
    University of Manchester)

Abstract

Coulomb drag between adjacent electron and hole gases has attracted considerable attention, being studied in various two-dimensional systems, including semiconductor and graphene heterostructures. Here we report measurements of electron–hole drag in the Planckian plasma that develops in monolayer graphene in the vicinity of its Dirac point above liquid-nitrogen temperatures. The frequent electron–hole scattering forces minority carriers to move against the applied electric field due to the drag induced by majority carriers. This unidirectional transport of electrons and holes results in nominally negative mobility for the minority carriers. The electron–hole drag is found to be strongest near room temperature, despite being notably affected by phonon scattering. Our findings provide better understanding of the transport properties of charge-neutral graphene, reveal limits on its hydrodynamic description, and also offer insight into quantum-critical systems in general.

Suggested Citation

  • Leonid A. Ponomarenko & Alessandro Principi & Andy D. Niblett & Wendong Wang & Roman V. Gorbachev & Piranavan Kumaravadivel & Alexey I. Berdyugin & Alexey V. Ermakov & Sergey Slizovskiy & Kenji Watana, 2024. "Extreme electron–hole drag and negative mobility in the Dirac plasma of graphene," Nature Communications, Nature, vol. 15(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-54198-x
    DOI: 10.1038/s41467-024-54198-x
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    References listed on IDEAS

    as
    1. G. Sarri & K. Poder & J. M. Cole & W. Schumaker & A. Di Piazza & B. Reville & T. Dzelzainis & D. Doria & L. A. Gizzi & G. Grittani & S. Kar & C. H. Keitel & K. Krushelnick & S. Kuschel & S. P. D. Mang, 2015. "Generation of neutral and high-density electron–positron pair plasmas in the laboratory," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    2. Na Xin & James Lourembam & Piranavan Kumaravadivel & A. E. Kazantsev & Zefei Wu & Ciaran Mullan & Julien Barrier & Alexandra A. Geim & I. V. Grigorieva & A. Mishchenko & A. Principi & V. I. Fal’ko & L, 2023. "Giant magnetoresistance of Dirac plasma in high-mobility graphene," Nature, Nature, vol. 616(7956), pages 270-274, April.
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