{
  "abstract": "Realizing highly transparent and magnetic-field-resilient superconducting contacts is a critical bottleneck for the advancement of two-dimensional (2D) quantum devices. Molybdenum-rhenium (MoRe) alloys have been empirically favored as they uniquely yield ballistic, highly transparent contacts to graphene that survive in high-magnetic-field regimes; however, the microscopic origin of this anomalous transparency has remained a long-standing puzzle. Here, we resolve this paradox by revealing that pristine graphene/MoRe interfaces are governed by the classical A15 superconducting phase. Combining low-temperature transport, X-ray diffraction, and atomic-resolution electron microscopy, we demonstrate that as-deposited MoRe spontaneously forms the A15 phase in direct contact with graphene, whereas thermal annealing triggers a phase transition to a hexagonal close-packed (hcp) structure that severely degrades the Josephson transparency. Crucially, the one-dimensional (1D) transition-metal atomic chains unique to the A15 structure exhibit a near-perfect lattice match (mismatch < 1%) with graphene edges. First-principles calculations further prove that the d-orbitals of these historically renowned 1D chains possibly hybridize with graphene's Dirac cone near the K point. These findings not only uncover the structural and electronic origins of optimal MoRe contacts but also establish A15-phase superconductors as a geometrically ideal, universal platform for realizing robust quantum electronics based on 2D materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.39694",
  "author_total": 14,
  "authors": [
    {
      "name": "Hiroto Ogura"
    },
    {
      "name": "Yuto Tsukidate"
    },
    {
      "name": "Shun Kondo"
    },
    {
      "name": "Zhuoqun Li"
    },
    {
      "name": "Natsuki Sasaki"
    },
    {
      "name": "Tsunenobu Sato"
    },
    {
      "name": "Azusa Utsumi"
    },
    {
      "name": "Tomohiro Otsuka"
    },
    {
      "name": "Mitsuhiro Saito"
    },
    {
      "name": "Kazutoshi Inoue"
    },
    {
      "name": "Takashi Taniguchi"
    },
    {
      "name": "Kenji Watanabe"
    },
    {
      "name": "Yuichi Ikuhara"
    },
    {
      "name": "Toshiaki Kato"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5rr8v99qf6z37.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.39694",
  "fulltext_url": null,
  "id": "5rr8v99qf6z37",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.39694",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.39694",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5rr8v99qf6z37.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.39694",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.39694"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Exceptional Superconducting Interfaces between Graphene and Atomic Chains in A15-MoRe",
  "title_text": "Exceptional Superconducting Interfaces between Graphene and Atomic Chains in A15-MoRe",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:45Z",
  "url": "https://research.draconitic.com/paper/5rr8v99qf6z37",
  "venue": "arXiv",
  "versions": []
}