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Spin-orbit proximity in MoS2/bilayer graphene heterostructures

Author

Listed:
  • Michele Masseroni

    (ETH Zürich)

  • Mario Gull

    (ETH Zürich)

  • Archisman Panigrahi

    (Massachusetts Institute of Technology)

  • Nils Jacobsen

    (University of Göttingen)

  • Felix Fischer

    (ETH Zürich)

  • Chuyao Tong

    (ETH Zürich)

  • Jonas D. Gerber

    (ETH Zürich)

  • Markus Niese

    (ETH Zürich)

  • Takashi Taniguchi

    (National Institute for Materials Science)

  • Kenji Watanabe

    (National Institute for Materials Science)

  • Leonid Levitov

    (Massachusetts Institute of Technology)

  • Thomas Ihn

    (ETH Zürich)

  • Klaus Ensslin

    (ETH Zürich)

  • Hadrien Duprez

    (ETH Zürich)

Abstract

Van der Waals heterostructures provide a versatile platform for tailoring electronic properties through the integration of two-dimensional materials. Among these combinations, the interaction between bilayer graphene and transition metal dichalcogenides (TMDs) stands out due to its potential for inducing spin–orbit coupling (SOC) in graphene. Future devices concepts require the understanding of the precise nature of SOC in TMD/bilayer graphene heterostructures and its influence on electronic transport phenomena. Here, we experimentally confirm the presence of two distinct types of SOC – Ising (ΔI = 1.55 meV) and Rashba (ΔR = 2.5 meV) – in bilayer graphene when interfaced with molybdenum disulfide. Furthermore, we reveal a non-monotonic trend in conductivity with respect to the electric displacement field at charge neutrality. This phenomenon is ascribed to the existence of single-particle gaps induced by the Ising SOC, which can be closed by a critical displacement field. Our findings also unveil sharp peaks in the magnetoconductivity around the critical displacement field, challenging existing theoretical models.

Suggested Citation

  • Michele Masseroni & Mario Gull & Archisman Panigrahi & Nils Jacobsen & Felix Fischer & Chuyao Tong & Jonas D. Gerber & Markus Niese & Takashi Taniguchi & Kenji Watanabe & Leonid Levitov & Thomas Ihn &, 2024. "Spin-orbit proximity in MoS2/bilayer graphene heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-53324-z
    DOI: 10.1038/s41467-024-53324-z
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    References listed on IDEAS

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    1. Yiran Zhang & Robert Polski & Alex Thomson & Étienne Lantagne-Hurtubise & Cyprian Lewandowski & Haoxin Zhou & Kenji Watanabe & Takashi Taniguchi & Jason Alicea & Stevan Nadj-Perge, 2023. "Enhanced superconductivity in spin–orbit proximitized bilayer graphene," Nature, Nature, vol. 613(7943), pages 268-273, January.
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    1. Hadrien Duprez & Solenn Cances & Andraz Omahen & Michele Masseroni & Max J. Ruckriegel & Christoph Adam & Chuyao Tong & Rebekka Garreis & Jonas D. Gerber & Wister Huang & Lisa Gächter & Kenji Watanabe, 2024. "Spin-valley locked excited states spectroscopy in a one-particle bilayer graphene quantum dot," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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