{
  "abstract": "We investigate the Raman response of sodium-doped cuprate oxychloride Na$_x$Ca$_{2-x}$CuO$_2$Cl$_2$ high-temperature superconductors across their entire phase diagram, from the antiferromagnetic to the superconducting region. In addition to the expected Raman-active phonon modes, we detect several additional modes that can be interpreted as being excited via a resonance process enabled by strong electron--phonon coupling. To verify the resonance effect, the Raman response at different incident photon energies was measured. At high energies, there is a well-defined $B_{1g}$ mode in the antiferromagnetic phase, which can be interpreted as a bimagnon We follow its temperature and doping dependence, providing information on the multimagnon excitation in these cuprates, which can be theoretically linked to the exchange interaction.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.22400",
  "author_total": 16,
  "authors": [
    {
      "name": "Chafic Fawaz"
    },
    {
      "name": "Yingzheng Gao"
    },
    {
      "name": "Luca Laveder"
    },
    {
      "name": "Lorenzo Menon"
    },
    {
      "name": "Owen Moulding"
    },
    {
      "name": "Rolf Heid"
    },
    {
      "name": "Blair W Lebert"
    },
    {
      "name": "Christophe Bellin"
    },
    {
      "name": "Keevin Beneut"
    },
    {
      "name": "David Santos-Cottin"
    },
    {
      "name": "Ikuya Yamada"
    },
    {
      "name": "Yuichi Okazaki"
    },
    {
      "name": "Hajime Yamamoto"
    },
    {
      "name": "Masaki Azuma"
    },
    {
      "name": "M.-A. Méasson"
    },
    {
      "name": "Matteo d'Astuto"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/epc4yqv9w6pq9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.22400",
  "fulltext_url": null,
  "id": "epc4yqv9w6pq9",
  "issns": [],
  "landing_url": "https://hal.science/hal-05742802v2",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.str-el"
    ],
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      "arxiv",
      "cond-mat.supr-con"
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      "hal",
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    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7213804612",
  "pdf_url": "https://hal.science/hal-05742802/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/epc4yqv9w6pq9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:43Z",
      "native_id": "hal-05742802",
      "source": "hal",
      "url": "https://hal.science/hal-05742802v2"
    },
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2609.22400",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.22400"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Raman scattering in cuprate oxychlorides high-temperature superconductors single-crystals",
  "title_text": "Raman scattering in cuprate oxychlorides high-temperature superconductors single-crystals",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:48Z",
  "url": "https://research.draconitic.com/paper/epc4yqv9w6pq9",
  "venue": "HAL",
  "versions": []
}