{
  "abstract": "Energy flows among coupled subsystems are essential for ultrafast dynamics and high-speed technologies. In magnetic materials, spin fluctuations -magnons- mediate these flows in ultrafast magnetism. Yet momentum-resolved access to low-energy magnons governing the microscopic dynamics has been lacking. Using time-resolved resonant diffuse scattering alongside complementary time-resolved X-ray techniques and quantum-kinetic simulations, we unveil the hierarchical energy pathways among correlated systems in the photoexcited antiferromagnet CuO. Above-bandgap excitation triggers near-instantaneous spin disorder, generating non-thermal magnons throughout reciprocal space within femtoseconds. Real-time momentum-resolved tracking reveals picosecond magnon quasi-thermalization, followed by nanosecond recovery via momentum-selective magnon-phonon scattering. The quasiparticle dispersion mismatch creates recovery bottlenecks that control non-equilibrium lifetimes. This microscopic framework transcends phenomenological models and generalizes across antiferromagnetic insulators, establishing design principles for ultrafast control of antiferromagnetic order.",
  "abstract_shown": true,
  "affiliations": [
    "PSI Center for Photon Science, Paul Scherrer Institute, Villigen-PSI, Switzerland.",
    "ESRF- The European Synchrotron, 71 Avenue des Martyrs, CS40220, Grenoble, Cedex, France.",
    "PSI Center for Scientific Computing, Theory and Data, Paul Scherrer Institute, Villigen-PSI, Switzerland.",
    "École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.",
    "Institute for Theoretical Physics and Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany.",
    "Department of Physics, Indian Institute of Technology, Roorkee, Uttarakhand, India.",
    "Department of Physics, University of Fribourg, Fribourg, Switzerland.",
    "Institut des Matériaux de Nantes Jean Rouxel (IMN) - UMR 6502, Nantes Université, CNRS, Nantes, France.",
    "ESRF - The European Synchrotron, 71 Avenue des Martyrs, CS40220, Grenoble, Cedex, 38043, France.",
    "PSI Center for Neutron and Muon Sciences, Paul Scherrer Institute, Villigen-PSI, Switzerland.",
    "Materials Discovery Laboratory, Department of Materials, ETH Zürich, Zürich, Switzerland.",
    "PSI Center for Photon Science, Paul Scherrer Institute, Villigen-PSI, Switzerland. hiroki.ueda@psi.ch."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 21,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Arnau Romaguera",
      "orcid": "0000-0001-9014-1533"
    },
    {
      "affs": [
        0
      ],
      "name": "Elizabeth Skoropata",
      "orcid": "0000-0002-8774-1594"
    },
    {
      "affs": [
        2,
        3,
        4
      ],
      "name": "Yun Yen"
    },
    {
      "affs": [
        0
      ],
      "name": "Biaolong Liu"
    },
    {
      "affs": [
        0,
        5
      ],
      "name": "Abhishek Nag",
      "orcid": "0000-0002-1394-5105"
    },
    {
      "affs": [
        0
      ],
      "name": "Shih-Wen Huang"
    },
    {
      "affs": [
        0
      ],
      "name": "Ludmila Leroy",
      "orcid": "0000-0002-4272-0298"
    },
    {
      "affs": [
        2,
        6
      ],
      "name": "Katja Sophia Moos",
      "orcid": "0009-0006-2478-418X"
    },
    {
      "affs": [
        2,
        6
      ],
      "name": "Gian Parusa",
      "orcid": "0009-0000-1783-195X"
    },
    {
      "affs": [
        0
      ],
      "name": "Serhane Zerdane"
    },
    {
      "affs": [
        7
      ],
      "name": "Ritwika Mandal"
    },
    {
      "affs": [
        8
      ],
      "name": "Céline Mariette",
      "orcid": "0000-0001-8067-9591"
    },
    {
      "affs": [
        8
      ],
      "name": "Matteo Levantino",
      "orcid": "0000-0002-1224-4809"
    },
    {
      "affs": [
        0
      ],
      "name": "Eugenio Paris",
      "orcid": "0000-0002-3418-8828"
    },
    {
      "affs": [
        0
      ],
      "name": "Luc Patthey",
      "orcid": "0000-0001-6101-8069"
    },
    {
      "affs": [
        9
      ],
      "name": "Ekaterina Pomjakushina",
      "orcid": "0000-0002-2446-3830"
    },
    {
      "affs": [
        0
      ],
      "name": "Urs Staub",
      "orcid": "0000-0003-2035-3367"
    },
    {
      "affs": [
        9,
        10
      ],
      "name": "Monica Ciomaga Hatnean"
    },
    {
      "affs": [
        2,
        6
      ],
      "name": "Michael Schüler",
      "orcid": "0000-0001-7322-6367"
    },
    {
      "affs": [
        0
      ],
      "name": "Elia Razzoli",
      "orcid": "0000-0002-8893-972X"
    },
    {
      "affs": [
        11
      ],
      "name": "Hiroki Ueda",
      "orcid": "0000-0001-5305-7930"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a0b1a9yrz0asq.bib",
  "cited_by": 0,
  "doi": "10.1038/s41467-026-77964-5",
  "fulltext_url": "https://europepmc.org/articles/PMC13720009",
  "id": "a0b1a9yrz0asq",
  "issns": [
    "2041-1723"
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  "landing_url": "https://europepmc.org/article/MED/42957695",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Article"
    ],
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      "openalex",
      "3104|Advanced Condensed Matter Physics"
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  "openalex": "W7129101505",
  "pdf_url": "https://europepmc.org/articles/PMC13720009?pdf=render",
  "pmcid": "PMC13720009",
  "pmid": "42957695",
  "published": "2026-09-29",
  "publisher": "Nature Publishing Group",
  "ris": "https://research.draconitic.com/paper/a0b1a9yrz0asq.ris",
  "sources": [
    {
      "first_seen": "2026-11-01T00:20:44Z",
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      "url": "https://doi.org/10.1038/s41467-026-77964-5"
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  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3104|Advanced Condensed Matter Physics",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Hierarchical quasiparticle dynamics in antiferromagnets revealed by time- and momentum-resolved X-ray scattering.",
  "title_text": "Hierarchical quasiparticle dynamics in antiferromagnets revealed by time- and momentum-resolved X-ray scattering.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-03T12:20:58Z",
  "url": "https://research.draconitic.com/paper/a0b1a9yrz0asq",
  "venue": "Nature communications",
  "versions": []
}