{
  "abstract": "The convergence of highly mobile Dirac fermions and flat-band heavy electrons offers a paradigm for emergent quantum phenomena. However, experimental realization of such intriguing state remains elusive. In this study, we report a dual carrier regime in the kagome metal Co3In2S2, wherein the charge transport is governed by high-mobility electrons while the thermodynamic responses exhibit heavy-electron behavior. This exotic duality arises from the coexistence of topological Dirac fermions and flat-band high-order (4th-order) Van Hove singularities (HOVHSs) at the Fermi surface, as revealed by magnetic-torque quantum oscillation and angle-resolved photoemission spectroscopy. The interaction between Dirac and HOVHS-derived carriers can be captured by a minimal two-pocket model, manifesting as sublinear resistivity above ~100 K and field-induced non-Fermi-liquid behavior at low temperatures. Our study establishes Co3In2S2 as a model platform for exploring many-body physics at the intersection of topology and correlation effects, and provides a foundational framework for designing quantum materials hosting diverse emergent states.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.24044",
  "author_total": 18,
  "authors": [
    {
      "name": "Meng Lyu"
    },
    {
      "name": "Kaiyi Zhai"
    },
    {
      "name": "Nikolai Peshcherenko"
    },
    {
      "name": "Junyan Liu"
    },
    {
      "name": "Jinying Yang"
    },
    {
      "name": "Subir Sen"
    },
    {
      "name": "Binbin Wang"
    },
    {
      "name": "Langsheng Ling"
    },
    {
      "name": "Zhaosheng Wang"
    },
    {
      "name": "Gang Li"
    },
    {
      "name": "Jieyi Liu"
    },
    {
      "name": "Yang Xu"
    },
    {
      "name": "Xiyang Li"
    },
    {
      "name": "Claudia Felser"
    },
    {
      "name": "Yang Zhang"
    },
    {
      "name": "Wujun Shi"
    },
    {
      "name": "Lexian Yang"
    },
    {
      "name": "Enke Liu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7r9dxyqf4w345.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.24044",
  "fulltext_url": null,
  "id": "7r9dxyqf4w345",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.24044",
  "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.str-el"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7214007604",
  "pdf_url": "https://arxiv.org/pdf/2609.24044",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7r9dxyqf4w345.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.24044",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.24044"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Carrier duality from the convergence of Dirac fermions and high-order van Hove singularities",
  "title_text": "Carrier duality from the convergence of Dirac fermions and high-order van Hove singularities",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/7r9dxyqf4w345",
  "venue": "arXiv",
  "versions": []
}