{
  "abstract": "Multiferroics combining magnetic and polar orders offer opportunities for optical control of spin and electric degrees of freedom. Here, using symmetry analysis and Floquet theory, we establish Floquet spin-antiferroelectricity coexisting with unconventional magnetism in periodically driven collinear antiferromagnets, qualifying it as an unconventional multiferroic. This driven phase supports compensated, spin-resolved in-plane electric polarizations perpendicular to the vertical rotation axis, which are strictly forbidden by crystalline symmetry in equilibrium. Using a tight-binding model, we elucidate how light polarization controls the emergence of polar order and spin responses. Moreover, first-principles-based Floquet calculations predict its realization in monolayer $\\text{MnPS}_3$, identifying a realistic two-dimensional antiferromagnetic platform. These findings establish a nonequilibrium route to spin-antiferroelectricity beyond equilibrium symmetry constraints and connect Floquet engineering, unconventional magnetism, and multiferroicity through optical control of spin and polar degrees of freedom.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.16758",
  "author_total": 6,
  "authors": [
    {
      "name": "Yu-hao Wei"
    },
    {
      "name": "Zheng Qin"
    },
    {
      "name": "Shengpu Huang"
    },
    {
      "name": "Dong-Hui Xu"
    },
    {
      "name": "Da-shuai Ma"
    },
    {
      "name": "Rui Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4ks6mz200c2k7.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.16758",
  "fulltext_url": null,
  "id": "4ks6mz200c2k7",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.16758",
  "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",
      "2504|Multiferroics and related materials"
    ]
  ],
  "openalex": "W7213414566",
  "pdf_url": "https://arxiv.org/pdf/2609.16758",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4ks6mz200c2k7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "2609.16758",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.16758"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Floquet Spin-Antiferroelectricity in Collinear Antiferromagnets",
  "title_text": "Floquet Spin-Antiferroelectricity in Collinear Antiferromagnets",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/4ks6mz200c2k7",
  "venue": "arXiv",
  "versions": []
}