Skip to content
DraconiticResearch
Search Sources API
197,768 studies31 sourcesUpdated 22 min ago
PreprintarXiv licencearXiv

Resonant enhancement of Raman scattering in a MoS2 nanotube

  • D. R. Kazanov
  • A. V. Poshakinskiy
Open at sourcePDFDOICite

Abstract

The whispering-gallery modes confined in the wall of a multiwall MoS2 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 (QpumpQsc)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 MoS2, so the match, reached for A1g at Epump=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→TM channel and exclude E1g.

Related

  1. Non-Resonant Impulsively Stimulated Raman Scattering by a Terahertz Field: a Case Study of 1T-TaS2
    Haotian Zhang, Yuheng Guo, Zidu Yu +7
    arXivPreprintarXiv licenceFull textCondensed matterarXiv
  2. Sensitivity Enhancement of S-Band Rydberg Atom Microwave Receiver Enabled by Resonant Cavity Field Confinement
    Yipeng Xie, Xinbing Chen, Lei Mingwei +1
    Optics ExpressPeer-reviewedLicence not statedOptics & photonicsCrossref
  3. Structural supermodulation enables resonant Raman determination of crystalline orientation in Bi2Sr2CaCu2O8+x flakes
    Flavia Lo Sardo, Tommaso Confalone, Shreya Kumbhakar +10
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv
  4. Signatures of bi-altermagnetism revealed by sublattice-specific circular dichroism in resonant inelastic X-ray scattering
    Ganesha Channagowdra, Amol Singh, Hsiao-Yu Huang +9
    Nature CommunicationsPeer-reviewedCC BY-NC-ND 4.0Full textCondensed matterCrossref
  5. Direct observation of the Lindhard continuum using resonant inelastic X-ray scattering
    Eder G. Lomeli, Sarbajaya Kundu, Katarzyna Siewierska +16
    Nature CommunicationsPeer-reviewedCC BY-NC-ND 4.0Full textApplied physics & instrumentationCrossref

Cite

BibTeXRIS
BibTeX
@misc{kazanov2026resonant,
  title = {{Resonant enhancement of Raman scattering in a MoS$_2$ nanotube}},
  author = {D. R. Kazanov and A. V. Poshakinskiy},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.20755},
  eprint = {2610.20755},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.20755},
}
RIS
TY  - UNPB
TI  - Resonant enhancement of Raman scattering in a MoS_2 nanotube
AU  - D. R. Kazanov
AU  - A. V. Poshakinskiy
PY  - 2026
DA  - 2026/10/14
PB  - arXiv
DO  - 10.48550/arxiv.2610.20755
UR  - https://arxiv.org/abs/2610.20755
AB  - 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_pumpQ_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_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→TM channel and exclude E_1g.
ER  -