{
  "abstract": "Magnetism in transition-metal dichalcogenide monolayers has attracted considerable attention, yet its nature remains elusive, particularly in monolayer 1T-VSe$_2$. Our first-principles calculations show that Stoner instability can drive ferromagnetism in XS$_2$ and XSe$_2$ monolayers (X = Ti, V, Co, Mo, and Ru), associated with a reduced density of states at the Fermi level. We demonstrate that mixing nonmagnetic Ti, Co, Mo, and Ru disulfides or diselenides can induce magnetism. Conversely, mixing magnetic VS$_2$ or VSe$_2$ with other compounds can completely suppress magnetism. Both scenarios can lower the total energy. Moreover, substituting a small number of V atoms with Co defects can also disrupt ferromagnetism in 1T-V(S,Se)$_2$. Even in pristine 1T-VSe$_2$, we find ferrimagnetic configurations with reversed local V moments that are nearly degenerate with the ferromagnetic state. Their competition may contribute to the suppression of long-range ferromagnetic order. This reduced energy penalty for magnetic and structural disorder arises from a suppressed density of states at the Fermi level, resembling the mechanism underlying the Peierls transition. Electronically driven energy lowering near the Fermi level may therefore be widespread among transition-metal dichalcogenide monolayers in various forms.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.29235",
  "author_total": 3,
  "authors": [
    {
      "name": "Chi-Cheng Lee"
    },
    {
      "name": "Yukiko Yamada-Takamura"
    },
    {
      "name": "Taisuke Ozaki"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8dtn4cd12076s.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.29235",
  "fulltext_url": null,
  "id": "8dtn4cd12076s",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.29235",
  "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.mtrl-sci"
    ],
    [
      "openalex",
      "2505|2D Materials and Applications"
    ]
  ],
  "openalex": "W7223248754",
  "pdf_url": "https://arxiv.org/pdf/2610.29235",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8dtn4cd12076s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:19Z",
      "native_id": "2610.29235",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.29235"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Disorder-Mediated Magnetism in Transition-Metal Dichalcogenide Monolayers: XS$_2$ and XSe$_2$ (X = Ti, V, Co, Mo, and Ru)",
  "title_text": "Disorder-Mediated Magnetism in Transition-Metal Dichalcogenide Monolayers: XS_2 and XSe_2 (X = Ti, V, Co, Mo, and Ru)",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:19Z",
  "url": "https://research.draconitic.com/paper/8dtn4cd12076s",
  "venue": "arXiv",
  "versions": []
}