{
  "abstract": "Coupling superconductors of different symmetries may lead to emergent quantum phenomena but experimental studies on heterojunctions made of lattice-mismatched crystals are scarce. Here, we fabricate Josephson junction by van der Waals stacking NbSe2 flakes on freshly cleaved surfaces of Bi2Sr2CaCu2O8+x or Bi2Sr2-xLaxCuO6+y. We obtain pronounced Josephson currents across the heterojunctions at temperatures below 7 K. The Josephson coupling strength, characterized by the product of the critical Josephson current I_c and the normal state resistance R_n, can reach about 0.3 mV, much exceeding the values previously reported in Pb-Bi2Sr2CaCu2O8+x or Nb-Bi2Sr2CaCu2O8+x junctions. Microwave irradiation induces integer Shapiro steps. We also observe the Fraunhofer diffraction pattern by applying an in-plane magnetic field. We compare our results with the theoretical calculations that take into account the coherent tunneling and the order parameter mixing. Our work demonstrates the hybrid junctions as a distinctive platform for addressing pairing symmetry and emergent quantum phenomena.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.29021",
  "author_total": 7,
  "authors": [
    {
      "name": "Yuying Zhu"
    },
    {
      "name": "Ziye Liu"
    },
    {
      "name": "Hongtao Yan"
    },
    {
      "name": "Lin Zhao"
    },
    {
      "name": "Xingjiang Zhou"
    },
    {
      "name": "Qi-Kun Xue"
    },
    {
      "name": "Ding Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3xjd3beczez3q.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.29021",
  "fulltext_url": null,
  "id": "3xjd3beczez3q",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.29021",
  "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.supr-con"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7223249469",
  "pdf_url": "https://arxiv.org/pdf/2610.29021",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3xjd3beczez3q.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:19Z",
      "native_id": "2610.29021",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.29021"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.supr-con",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Josephson effect in symmetry-mismatched van der Waals hybrid junctions of NbSe2-Bi2Sr2CaCu2O8+x and NbSe2-Bi2Sr2-xLaxCuO6+y",
  "title_text": "Josephson effect in symmetry-mismatched van der Waals hybrid junctions of NbSe2-Bi2Sr2CaCu2O8+x and NbSe2-Bi2Sr2-xLaxCuO6+y",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:19Z",
  "url": "https://research.draconitic.com/paper/3xjd3beczez3q",
  "venue": "arXiv",
  "versions": []
}