{
  "abstract": "Altermagnets have recently gained attention for hosting symmetry-enforced spin-split bands despite zero net magnetization. Angle-resolved photoelectron spectroscopy (ARPES) offers direct access to their electronic structure. However, the intrinsic surface sensitivity of this technique complicates the identification of the observed features: Surface states can be misinterpreted as the spin-split counterpart of bulk bands. This issue becomes particularly relevant for layered intercalated systems, where micrometer-sized domains with distinct terminations often coexist on a cleaved surface. We discuss this scenario for CoNb 4 Se 8 , one of the first established layered altermagnets. Supported by density functional theory calculations, we employ micro-ARPES to probe individual domains and reveal two contrasting surface terminations. We identify Co-and Se-terminated domains with characteristic surface states arising from bulk-surface connectivity of the material. Our work shows that termination-dependent surface contributions are essential for the reliable spectroscopic identification of altermagnetism and for assessing its presence across the family of layered materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.23375",
  "author_total": 23,
  "authors": [
    {
      "name": "Pietro Maria Forcella"
    },
    {
      "name": "Alessandro de Vita"
    },
    {
      "name": "Matthew Watson"
    },
    {
      "name": "Sammar Tayyab"
    },
    {
      "name": "Chiara Bigi"
    },
    {
      "name": "Iulia Cojocariu"
    },
    {
      "name": "Marcin Szpytma"
    },
    {
      "name": "Matteo Jugovac"
    },
    {
      "name": "Andrea Locatelli"
    },
    {
      "name": "Tevfik Onur Menteş"
    },
    {
      "name": "My Bang Petersen"
    },
    {
      "name": "Paolo Moras"
    },
    {
      "name": "Polina Sheverdyaeva"
    },
    {
      "name": "Christopher Candelora"
    },
    {
      "name": "Ilija Zeljkovic"
    },
    {
      "name": "Federico Motti"
    },
    {
      "name": "Jill a Miwa"
    },
    {
      "name": "Vincent Polewczyk"
    },
    {
      "name": "Matthieu Jamet"
    },
    {
      "name": "Matteo Calandra"
    },
    {
      "name": "Younghun Hwang"
    },
    {
      "name": "Davide Romanin"
    },
    {
      "name": "Federico Mazzola"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fpgenneyv2bve.bib",
  "cited_by": 0,
  "doi": "10.1021/acs.nanolett.6c01819",
  "fulltext_url": null,
  "id": "fpgenneyv2bve",
  "issns": [
    "1530-6984",
    "1530-6992"
  ],
  "landing_url": "https://hal.science/hal-05820462v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
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      "arxiv",
      "cond-mat.str-el"
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      "0.phys"
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      "hal",
      "1.chim.mate"
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    [
      "openalex",
      "3107|Magnetic properties of thin films"
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  ],
  "openalex": "W7222960541",
  "pdf_url": "https://hal.science/hal-05820462/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-16",
  "publisher": "American Chemical Society",
  "ris": "https://research.draconitic.com/paper/fpgenneyv2bve.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:59Z",
      "native_id": "hal-05820462",
      "source": "hal",
      "url": "https://hal.science/hal-05820462v1"
    },
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.23375",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.23375"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:1.chim.mate",
      "subfield": "materials-polymers"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Termination-dependent surface Fermiology in the intercalated altermagnet CoNb 4 Se 8",
  "title_text": "Termination-dependent surface Fermiology in the intercalated altermagnet CoNb 4 Se 8",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/fpgenneyv2bve",
  "venue": "Nano Letters",
  "versions": [
    {
      "doi": "10.1021/acs.nanolett.6c01819",
      "pid": "fpgenneyv2bve",
      "relation": "published-as",
      "title": "Termination-dependent surface Fermiology in the intercalated altermagnet CoNb 4 Se 8",
      "venue": "Nano Letters"
    }
  ]
}