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    First-Principles Study of Metal-Graphene Edge Contact for Ballistic Josephson Junction

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    Date
    2019-06-05
    Author
    Lee, Yeonghun
    Hwang, Jeongwoon
    Zhang, Fan
    Cho, Kyeongjae
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    Abstract
    Abstract
    Edge-contacted superconductor-graphene-superconductor Josephson junctions have been utilized to realize topological superconductivity, and have shown superconducting signatures in the quantum Hall regime. We perform first-principles calculations to interpret electronic couplings at the superconductor-graphene edge contacts by investigating various aspects in hybridization of molybdenum d orbitals and graphene π orbitals. We also reveal that interfacial oxygen defects play an important role in determining the doping type of graphene near the interface. © 2019 American Physical Society.
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    Supplementary material is available on publisher's website. Use the DOI link below.
    URI
    http://dx.doi.org/10.1103/PhysRevMaterials.3.064801
    https://hdl.handle.net/10735.1/7416
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    • Cho, Kyeongjae
    • Zhang, Fan

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