{
  "abstract": "The whispering-gallery modes confined in the wall of a multiwall MoS$_2$ nanotube resonantly enhance the spontaneous Raman scattering by its own optical phonons. The enhancement is doubly resonant --- pump and Stokes waves hit two adjacent modes at one pump energy, and the signal scales as $(Q_{\\rm pump}Q_{\\rm sc})^2$ - whenever a phonon energy matches the free spectral range of the mode ladder. Near the A exciton the excitonic dispersion compresses the ladder and sweeps its spacing through all intralayer phonon energies of MoS$_2$, so the match, reached for $A_{1g}$ at $E_{\\rm pump}=1551$~meV, requires no geometric tuning. A missed match splits the excitation peak into a pump- and a scattered-resonant doublet whose splitting measures the residual detuning. Selection rules confine the double resonance to the TM$\\to$TM channel and exclude $E_{1g}$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.20755",
  "author_total": 2,
  "authors": [
    {
      "name": "D. R. Kazanov"
    },
    {
      "name": "A. V. Poshakinskiy"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0m7wc6nj7fphs.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.20755",
  "fulltext_url": null,
  "id": "0m7wc6nj7fphs",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.20755",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.20755",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0m7wc6nj7fphs.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.20755",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.20755"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Resonant enhancement of Raman scattering in a MoS$_2$ nanotube",
  "title_text": "Resonant enhancement of Raman scattering in a MoS_2 nanotube",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/0m7wc6nj7fphs",
  "venue": "arXiv",
  "versions": []
}