{
  "abstract": "Fully gapped spin-triplet superconductors offer a natural setting for topological edge transport and Majorana excitations. Here we propose a heterostructure that interfaces altermagnetic monolayer V$_2$Se$_2$O with a conventional $s$-wave superconductor. Starting from an ab-initio description of V$_2$Se$_2$O, we construct a low-energy model of its spin-split Fermi surface and study the superconducting instability of the coupled stack. We find that the momentum-dependent exchange splitting of the altermagnet strongly favors equal-spin pairing and converts the proximity-induced order into a fully gapped $p$-wave state. Over a broad range of interface parameters, the resulting Bogoliubov-de Gennes bands carry a nonzero Chern number, and slab spectra exhibit chiral Majorana edge modes traversing the bulk gap. We further quantify the inverse proximity effect and show how the induced gap evolves across a finite multilayer stack. These results establish a route to topological triplet superconductivity by interfacing a conventional superconductor with an experimentally available altermagnetic semiconductor, and provide practical guidance for interface fabrication and experimental detection.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.13408",
  "author_total": 4,
  "authors": [
    {
      "name": "Michael Liudeng"
    },
    {
      "name": "Hrishikesh Patel"
    },
    {
      "name": "Marcel Franz"
    },
    {
      "name": "Niclas Heinsdorf"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3aw1hw143ks0m.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.13408",
  "fulltext_url": null,
  "id": "3aw1hw143ks0m",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.13408",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.13408",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3aw1hw143ks0m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2609.13408",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.13408"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Topological superconductivity in an altermagnet-superconductor heterostructure",
  "title_text": "Topological superconductivity in an altermagnet-superconductor heterostructure",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/3aw1hw143ks0m",
  "venue": "arXiv",
  "versions": []
}