First-principles study of metal-graphene edge contact for ballistic Josephson junction

Yeonghun Lee; Jeongwoon Hwang; Fan Zhang; Kyeongjae Cho

doi:10.1103/PhysRevMaterials.3.064801

First-principles study of metal-graphene edge contact for ballistic Josephson junction

Superconductivity 2020-04-07 v2 Materials Science Strongly Correlated Electrons

Authors: Yeonghun Lee , Jeongwoon Hwang , Fan Zhang , Kyeongjae Cho

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Abstract

Edge-contacted superconductor-graphene-superconductor Josephson junction have been utilized to realize topological superconductivity, which have shown superconducting signatures in the quantum Hall regime. We perform the 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 $\pi$ orbitals. We also reveal that interfacial oxygen defects play an important role in determining the doping type of graphene near the interface.

Keywords

first-principles calculation graphene edge contact josephson junction topological superconductivity molybdenum d orbital oxygen defect

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@article{arxiv.1905.10465,
  title  = {First-principles study of metal-graphene edge contact for ballistic Josephson junction},
  author = {Yeonghun Lee and Jeongwoon Hwang and Fan Zhang and Kyeongjae Cho},
  journal= {arXiv preprint arXiv:1905.10465},
  year   = {2020}
}

First-principles study of metal-graphene edge contact for ballistic Josephson junction

Abstract

Keywords

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