{
  "abstract": "Superconductivity above the liquid-nitrogen temperature remains rare in two-dimensional elemental crystals, where strong covalent bonding often yields high phonon frequencies but insufficient electron-phonon coupling. Here, using first-principles calculations and fully anisotropic Migdal-Eliashberg theory, we predict tetralayer kagome borophene (TKB) stabilized by ABAB covalent stacking, as a liquid-nitrogen-temperature elemental superconductor. With a predicted critical temperature of 102 K, TKB sets a record-high value among previously reported elemental superconductors. Unlike known high-Tc boron-based superconductors dominated by in-plane sigma-bonding states and high-frequency in-plane B-B stretching modes, TKB realizes an out-of-plane s-pz-bonding-mediated pairing mechanism, in which interlayer s-pz bonding states at the Fermi level are strongly coupled to low-frequency out-of-plane vibrations of boron atoms. These results reveal a distinct out-of-plane pairing channel in multilayer borophene and establish covalent stacking engineering as a potential route for high-Tc superconductivity in two-dimensional materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Nano Lett. (2026)",
  "arxiv": "2609.09730",
  "author_total": 7,
  "authors": [
    {
      "name": "Yingnan Liu"
    },
    {
      "name": "Yan Liu"
    },
    {
      "name": "Renyu Duan"
    },
    {
      "name": "Menghui Wang"
    },
    {
      "name": "Meiling Xu"
    },
    {
      "name": "Hanyu Liu"
    },
    {
      "name": "Shoutao Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bxegbehnt43aj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.09730",
  "fulltext_url": null,
  "id": "bxegbehnt43aj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.09730",
  "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.supr-con"
    ],
    [
      "openalex",
      "2505|Boron and Carbon Nanomaterials Research"
    ]
  ],
  "openalex": "W7212191182",
  "pdf_url": "https://arxiv.org/pdf/2609.09730",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bxegbehnt43aj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:12Z",
      "native_id": "2609.09730",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.09730"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.supr-con",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Record-Breaking Elemental Superconductivity in Tetralayer Kagome Borophene",
  "title_text": "Record-Breaking Elemental Superconductivity in Tetralayer Kagome Borophene",
  "type": "preprint",
  "updated_at": "2026-11-04T15:21:24Z",
  "url": "https://research.draconitic.com/paper/bxegbehnt43aj",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1021/acs.nanolett.6c03566",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}