{
  "abstract": "Over the last decade, the emerging field of two-dimensional van der Waals magnetism has focused mainly on long-range-ordered magnetic phases. Disordered magnetic phases, however, remain largely unexplored. Here, we report a highly anisotropic Griffiths phase driven by self-intercalation in the van der Waals magnet Fe5GeTe2. We find evidence of short-range-ordered ferromagnetic clusters embedded in a paramagnetic matrix, which dominate the magnetic response between the Curie temperature and a higher characteristic Griffiths temperature. An anomalous power-law divergence in the magnetic susceptibility, universal Lee Yang scaling, and distinct entropy anomalies provide further evidence for this phase. Strikingly, the non-analytic Griffiths response emerges exclusively under in-plane magnetic fields, whereas out-of-plane fields abruptly alter this behavior. This directional dependence indicates that the local magnetic interactions within nanoscale clusters are closely coupled to the layered lattice geometry. Our findings establish a regime of dimensionally constrained, disorder-driven magnetism and identify self-intercalated van der Waals magnets as a platform for investigating the interplay between magnetic disorder, anisotropy, and reduced dimensionality.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.17315",
  "author_total": 5,
  "authors": [
    {
      "name": "Anupam K. Singh"
    },
    {
      "name": "Dhananjay Nair"
    },
    {
      "name": "Holger Meyerheim"
    },
    {
      "name": "Stuart S. P. Parkin"
    },
    {
      "name": "Banabir Pal"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ejssayk6mzqha.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.17315",
  "fulltext_url": null,
  "id": "ejssayk6mzqha",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.17315",
  "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",
      "3104|Advanced Condensed Matter Physics"
    ]
  ],
  "openalex": "W7221750812",
  "pdf_url": "https://arxiv.org/pdf/2610.17315",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ejssayk6mzqha.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.17315",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.17315"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Evidence of an anisotropic Griffiths phase in a two-dimensional van der Waals magnet",
  "title_text": "Evidence of an anisotropic Griffiths phase in a two-dimensional van der Waals magnet",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/ejssayk6mzqha",
  "venue": "arXiv",
  "versions": []
}