{
  "abstract": "The interaction between plasmons and magnons is a long-sought phenomenon with implications for fundamental physics and spintronics applications. In three-dimensional systems, this coupling is suppressed by the large mismatch in energy scales, but two-dimensional (2D) plasmons with gapless dispersion can overlap with magnons over a broad spectral range. Despite numerous theoretical predictions, experimental observation of magnon-plasmon interaction has remained elusive. In this work, we study a first-of-its-kind hybrid plasmon-magnon platform based on 2D materials. By deploying scattering-type scanning near-field optical microscopy (s-SNOM) with terahertz radiation, we image propagating plasmon wavepackets at a graphene/NiPS$_3$ interface and track their dynamics across the antiferromagnetic transition of NiPS$_3$. We observe a clear renormalization of the plasmon-polariton dispersion concurrent with the onset of antiferromagnetic order. With complementary Raman scattering and nano-terahertz spectroscopy, we unveil spectral weight redistribution and dielectric screening changes, potentially associated with the multi-magnon continuum, as the underlying mechanism. These results provide solid evidence of coupling between plasmon and antiferromagnetic order, marking a cornerstone for a potential platform for hybrid magnon-plasmon interactions in 2D materials, opening avenues for coherent spin-plasmon devices and tunable terahertz spintronic components.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.03138",
  "author_total": 20,
  "authors": [
    {
      "name": "Yifan Su"
    },
    {
      "name": "Suheng Xu"
    },
    {
      "name": "Rocco A. Vitalone"
    },
    {
      "name": "Ziyu Liu"
    },
    {
      "name": "Emil Viñas Boström"
    },
    {
      "name": "Na Wu"
    },
    {
      "name": "Chun-Ying Huang"
    },
    {
      "name": "Zhuquan Zhang"
    },
    {
      "name": "Jaehoon Jung"
    },
    {
      "name": "Daniel G. Chica"
    },
    {
      "name": "Vinícius da Silveira Lan Avelar"
    },
    {
      "name": "Yiping Wang"
    },
    {
      "name": "Takashi Taniguchi"
    },
    {
      "name": "Kenji Watanabe"
    },
    {
      "name": "James C. Hone"
    },
    {
      "name": "Xiaoyang Zhu"
    },
    {
      "name": "Cory R. Dean"
    },
    {
      "name": "Xavier Roy"
    },
    {
      "name": "Angel Rubio"
    },
    {
      "name": "D. N. Basov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/da89ptsg15hz8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.03138",
  "fulltext_url": null,
  "id": "da89ptsg15hz8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.03138",
  "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.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "openalex",
      "2204|Plasmonic and Surface Plasmon Research"
    ]
  ],
  "openalex": "W7208705992",
  "pdf_url": "https://arxiv.org/pdf/2609.03138",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/da89ptsg15hz8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:31Z",
      "native_id": "2609.03138",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.03138"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Antiferromagnetism-altered plasmon dynamics",
  "title_text": "Antiferromagnetism-altered plasmon dynamics",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:31Z",
  "url": "https://research.draconitic.com/paper/da89ptsg15hz8",
  "venue": "arXiv",
  "versions": []
}