Resonant Raman scattering in bilayer 3R-MoS$_{2}$
Fuente:
arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866917552720969728 |
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| author | Mohanty, Chinmay K. Walczyk, Kacper Woźniak, Tomasz Jiang, Chengcheng Babiński, Adam Faugeras, Clement Chen, Zhaolong Molas, Maciej R. |
| author_facet | Mohanty, Chinmay K. Walczyk, Kacper Woźniak, Tomasz Jiang, Chengcheng Babiński, Adam Faugeras, Clement Chen, Zhaolong Molas, Maciej R. |
| contents | Raman scattering is a powerful spectroscopic technique widely employed to investigate light-matter interactions and lattice dynamics in two-dimensional materials. Here, we investigate the temperature-dependent resonant Raman response of bilayer 3R-MoS$_2$. The study combines multi-wavelength Raman spectroscopy, photoluminescence measurements, and density functional theory calculations to track the evolution of excitonic transitions and resonance conditions. We observe contributions from both zone-centre and finite-momentum phonons, a pronounced quenching of the Stokes intensity at low temperatures followed by saturation, the emergence of anti-Stokes scattering above 130~K, and a strong deviation of the effective phonon temperature from the lattice temperature induced by resonance effects. These results demonstrate that the Raman response is governed by the interplay between incoming and outgoing resonance processes, providing deeper insight into exciton-phonon coupling in van der Waals materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2606_01350 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Resonant Raman scattering in bilayer 3R-MoS$_{2}$ Mohanty, Chinmay K. Walczyk, Kacper Woźniak, Tomasz Jiang, Chengcheng Babiński, Adam Faugeras, Clement Chen, Zhaolong Molas, Maciej R. Materials Science Mesoscale and Nanoscale Physics Raman scattering is a powerful spectroscopic technique widely employed to investigate light-matter interactions and lattice dynamics in two-dimensional materials. Here, we investigate the temperature-dependent resonant Raman response of bilayer 3R-MoS$_2$. The study combines multi-wavelength Raman spectroscopy, photoluminescence measurements, and density functional theory calculations to track the evolution of excitonic transitions and resonance conditions. We observe contributions from both zone-centre and finite-momentum phonons, a pronounced quenching of the Stokes intensity at low temperatures followed by saturation, the emergence of anti-Stokes scattering above 130~K, and a strong deviation of the effective phonon temperature from the lattice temperature induced by resonance effects. These results demonstrate that the Raman response is governed by the interplay between incoming and outgoing resonance processes, providing deeper insight into exciton-phonon coupling in van der Waals materials. |
| title | Resonant Raman scattering in bilayer 3R-MoS$_{2}$ |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2606.01350 |