{
  "abstract": "Excitonic states in two-dimensional semiconductors are sensitive to time-reversal symmetry breaking, yet how interfacial exchange acts on higher-lying exciton Rydberg states remains largely unexplored. Here we show that wavelength-resolved magneto-optical Kerr spectroscopy of a proximity-coupled MoSe$_2$/Fe$_3$GaTe$_2$ van der Waals heterostructure resolves magnetic symmetry breaking across the A- and B-exciton manifolds. Combining reflection, photoluminescence, and photoluminescence excitation spectroscopy with first-principles many-body calculations including screening by the metallic Fe$_3$GaTe$_2$ layer, we assign the strongly enhanced Kerr resonances to the ground and 2s states of both manifolds. Reversing the magnetic field inverts the polarity of every resonance. A field-odd/field-even decomposition confirms a magnetic origin. The opposite Kerr polarities of the A- and B-exciton manifolds can be explained by proximity-induced exchange coupling to the opposite valence-band spins of the two exciton series. Our results establish resonant Kerr spectroscopy as a sensitive probe of magnetically induced symmetry breaking across the excitonic manifold.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.34536",
  "author_total": 11,
  "authors": [
    {
      "name": "Astha Khandelwal"
    },
    {
      "name": "Benran Zhang"
    },
    {
      "name": "Madhusmita Jena"
    },
    {
      "name": "Zhenchao Wen"
    },
    {
      "name": "Kenji Watanabe"
    },
    {
      "name": "Takashi Taniguchi"
    },
    {
      "name": "Saroj P. Dash"
    },
    {
      "name": "Zhenglu Li"
    },
    {
      "name": "Ryo Kitaura"
    },
    {
      "name": "Bhagwati Prasad"
    },
    {
      "name": "Daichi Kozawa"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c80vckm5ecpvh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.34536",
  "fulltext_url": null,
  "id": "c80vckm5ecpvh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.34536",
  "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",
      "2505|2D Materials and Applications"
    ]
  ],
  "openalex": "W7214802607",
  "pdf_url": "https://arxiv.org/pdf/2609.34536",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c80vckm5ecpvh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.34536",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.34536"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Magneto-optical Kerr spectroscopy of exciton Rydberg states in a magnetic van der Waals heterostructure",
  "title_text": "Magneto-optical Kerr spectroscopy of exciton Rydberg states in a magnetic van der Waals heterostructure",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/c80vckm5ecpvh",
  "venue": "arXiv",
  "versions": []
}