{
  "abstract": "Manipulating spin using contactless and non-invasive optical approaches is one of the forefront topic in the modern spintronic science and technology. Prior studies on optically-induced spin reorientation usually scales with spin-orbit coupling strength, setting a limitation on composing heavy elements. In this work, we extend such a limit into nonrelativistic regime by exploring noncollinear magnetic configuration. Using a general spin group-theoretical investigation, we show how the symmetric operators in both spin and lattice spaces control the spin torque and quantum geometry of Bloch wavefunction--including both quantum metric and Berry curvature. We describe their site-resolved spin symmetries and unravel their selection rules. Furthermore, we adopt a Kagomé lattice model and a realistic material family to showcase the local spin torque under light irradiation. Since the nonrelativistic spin splitting usually spans on the order of electron-volt, significantly larger than typical spin-orbit induced splitting, the nonrelativistic light-induced spin torque is concomitantly much stronger. This work extends the previous opto-spintronics from relativistic to nonrelativistic limit, significantly broadening its realization platform.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Physical Review Letters 137, 186905 (2026)",
  "arxiv": "2610.16052",
  "author_total": 2,
  "authors": [
    {
      "name": "Zhiyuan Li"
    },
    {
      "name": "Jian Zhou"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8xrd9hn6waetf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.16052",
  "fulltext_url": null,
  "id": "8xrd9hn6waetf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.16052",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7221794334",
  "pdf_url": "https://arxiv.org/pdf/2610.16052",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8xrd9hn6waetf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.16052",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.16052"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Nonrelativistic Optically-Induced Spin Torque in Noncollinear Magnets",
  "title_text": "Nonrelativistic Optically-Induced Spin Torque in Noncollinear Magnets",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:17Z",
  "url": "https://research.draconitic.com/paper/8xrd9hn6waetf",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/vcvp-w5fd",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}