{
  "abstract": "The Josephson effect provides a direct phase-sensitive probe of superconducting order and has played a central role in identifying unconventional pairing symmetries1-6. Conventional Josephson interferometry, however, extracts phase information through engineered junction geometries and crystallographic orientations, rather than by resolving the internal phase structure of the pair state within a single unit cell. Here, we use a superconducting Nb tip to realize atomic-scale Josephson interferometry in monolayer FeSe/SrTiO3. Despite a fully gapped quasiparticle spectrum, the local Josephson response exhibits a striking intra-unit-cell pattern, with maxima centred on Fe-Fe bonds and robust nodal lines along the Fe-Se directions. We show that these nodal lines arise from destructive interference between Josephson tunnelling amplitudes associated with opposite-sign pairing components. Microscopic calculations reproduce the observed spatial pattern and identify it as a fingerprint of nodeless d-wave pairing. Our results establish intra-unit-cell Josephson interferometry as a local phase-sensitive probe of pairing symmetry in unconventional superconductors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.34382",
  "author_total": 16,
  "authors": [
    {
      "name": "Runxin Li"
    },
    {
      "name": "Yuchen Huo"
    },
    {
      "name": "Jiong Mei"
    },
    {
      "name": "Ming-Qiang Ren"
    },
    {
      "name": "Miaomiao Wang"
    },
    {
      "name": "Quanxing Wei"
    },
    {
      "name": "Fengyu Yao"
    },
    {
      "name": "Maowen Zheng"
    },
    {
      "name": "Qing Qu"
    },
    {
      "name": "Cui Ding"
    },
    {
      "name": "Hongtao Yuan"
    },
    {
      "name": "Zhuoyu Chen"
    },
    {
      "name": "Wei-Qiang Chen"
    },
    {
      "name": "Kun Jiang"
    },
    {
      "name": "Qi-Kun Xue"
    },
    {
      "name": "Yu-Jie Sun"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1x312rhq0mqqz.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.34382",
  "fulltext_url": null,
  "id": "1x312rhq0mqqz",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.34382",
  "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.str-el"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.34382",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-25",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1x312rhq0mqqz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.34382",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.34382"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Nodeless d-wave pairing in monolayer FeSe revealed by intra-unit-cell Josephson interferometry",
  "title_text": "Nodeless d-wave pairing in monolayer FeSe revealed by intra-unit-cell Josephson interferometry",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/1x312rhq0mqqz",
  "venue": "arXiv",
  "versions": []
}