{
  "abstract": "We propose an altermagnetism-induced route to a two-dimensional higher-order topological Dirac semimetal in a trilayer nonsymmorphic Dirac system. Interlayer hybridization preserves the nonsymmorphic bulk Dirac crossings and generates helical edge states in the trilayer phase. Introducing outer-layer $d$-wave altermagnetic order gaps the helical edge states, while only the symmetry-protected Dirac crossing at high-symmetry point $M$ remains gapless. The resulting phase hosts a surviving bulk Dirac point, gapped edge spectra, and corner states. An exact layer-space decomposition further reveals that these features arise from the coexistence of a gapless Dirac sector and a gapped $\\mathbb{Z}_2$ topological sector. Our results establish altermagnetism as an effective mechanism for engineering higher-order topological Dirac semimetals in two-dimensional nonsymmorphic systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. B 114, 285401 (2026)",
  "arxiv": "2611.04347",
  "author_total": 4,
  "authors": [
    {
      "name": "Lizhou Liu"
    },
    {
      "name": "Cheng-Ming Miao"
    },
    {
      "name": "Ying-Tao Zhang"
    },
    {
      "name": "Qing-Feng Sun"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a5mkeke0fth7s.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.04347",
  "fulltext_url": null,
  "id": "a5mkeke0fth7s",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.04347",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.04347",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/a5mkeke0fth7s.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:21:25Z",
      "native_id": "2611.04347",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.04347"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Altermagnetism-induced higher-order topological Dirac semimetals in two-dimensional nonsymmorphic systems",
  "title_text": "Altermagnetism-induced higher-order topological Dirac semimetals in two-dimensional nonsymmorphic systems",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:01Z",
  "url": "https://research.draconitic.com/paper/a5mkeke0fth7s",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/7dmx-h9h3",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}