{
  "abstract": "Kagome lattices host exotic phenomena such as quantum spin liquids, topological Weyl nodes, and flat bands. The kagome ferromagnet Co₃Sn₂S₂ has been a focus of debate due to conflicting reports on its magnetic character. Here, using weakly perturbative probes-primarily neutron scattering and Mössbauer spectroscopy-we determine its ground state and magnetic Hamiltonian. The spin wave spectrum is reproduced by a simple Hamiltonian dominated by a large in-plane nearest-neighbor Heisenberg interaction J and an antisymmetric Dzyaloshinskii-Moriya interaction that is roughly one third of J. This Hamiltonian yields a canted, noncollinear ferromagnetic ground state with an umbrella-type structure, which our data show to be the true ground state at all temperatures below TC. Additionally, the spin susceptibility above TC exhibits a reduced critical exponent, akin to other spin-anisotropic systems. Our findings explain the unconventional magnetism in Co₃Sn₂S₂, including the giant anomalous Hall effect and the origin of chiral phonons.",
  "abstract_shown": true,
  "affiliations": [
    "PSI Center for Neutron and Muon Sciences, Villigen, Switzerland. tamd@ill.fr.",
    "Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, Sweden. tamd@ill.fr.",
    "Institut Laue-Langevin, 38042, Grenoble, France. tamd@ill.fr.",
    "PSI Center for Neutron and Muon Sciences, Villigen, Switzerland.",
    "Institut Jean Lamour, UMR 7198, CNRS, Université de Lorraine, Nancy, France.",
    "Institut Laue-Langevin, 38042, Grenoble, France.",
    "Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China.",
    "School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China.",
    "Songshan Lake Materials Laboratory, Dongguan, China.",
    "Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.",
    "Paul Scherrer Institut, Villigen, Switzerland. yona.soh@psi.ch."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 13,
  "authors": [
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "David W Tam",
      "orcid": "0000-0002-9277-9060"
    },
    {
      "affs": [
        3
      ],
      "name": "Romain Sibille",
      "orcid": "0000-0001-6360-7262"
    },
    {
      "affs": [
        4
      ],
      "name": "Thomas Mazet",
      "orcid": "0000-0003-1077-7561"
    },
    {
      "affs": [
        3
      ],
      "name": "Bertrand Roessli"
    },
    {
      "affs": [
        5
      ],
      "name": "Andrea Piovano",
      "orcid": "0000-0002-5005-6307"
    },
    {
      "affs": [
        4
      ],
      "name": "Bernard Malaman"
    },
    {
      "affs": [
        3
      ],
      "name": "Dariusz Jakub Gawryluk",
      "orcid": "0000-0003-4460-7106"
    },
    {
      "affs": [
        3
      ],
      "name": "Loïc Roduit"
    },
    {
      "affs": [
        6,
        7,
        8
      ],
      "name": "YouGuo Shi",
      "orcid": "0000-0003-2976-9772"
    },
    {
      "affs": [
        6
      ],
      "name": "Xiuliang Yuan"
    },
    {
      "affs": [
        3,
        9
      ],
      "name": "Alexandra A Turrini",
      "orcid": "0000-0002-2495-3960"
    },
    {
      "affs": [
        3
      ],
      "name": "Lukas Keller",
      "orcid": "0000-0002-8492-4117"
    },
    {
      "affs": [
        10
      ],
      "name": "Yona Soh",
      "orcid": "0000-0003-3108-2814"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/887jq7nmpdt4w.bib",
  "cited_by": 0,
  "doi": "10.1038/s41467-026-77000-6",
  "fulltext_url": "https://europepmc.org/articles/PMC13683396",
  "id": "887jq7nmpdt4w",
  "issns": [
    "2041-1723"
  ],
  "landing_url": "https://europepmc.org/article/MED/42901899",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3104|Advanced Condensed Matter Physics"
    ]
  ],
  "openalex": "W7169832257",
  "pdf_url": "https://europepmc.org/articles/PMC13683396?pdf=render",
  "pmcid": "PMC13683396",
  "pmid": "42901899",
  "published": "2026-09-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/887jq7nmpdt4w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:41Z",
      "native_id": "MED:42901899",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42901899"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3104|Advanced Condensed Matter Physics",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Noncollinear kagome magnet driven by giant antisymmetric exchange.",
  "title_text": "Noncollinear kagome magnet driven by giant antisymmetric exchange.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:41Z",
  "url": "https://research.draconitic.com/paper/887jq7nmpdt4w",
  "venue": "Nature communications",
  "versions": []
}