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- W4306175875 abstract "We report resonant Raman spectroscopy of neutral excitons X$^0$ and intravalley trions X$^-$ in hBN-encapsulated MoS$_2$ monolayer embedded in a nanobeam cavity. By temperature tuning the detuning between Raman modes of MoS$_2$ lattice phonons and X$^0$/X$^-$ emission peaks, we probe the mutual coupling of excitons, lattice phonons and cavity vibrational phonons. We observe an enhancement of X$^0$-induced Raman scattering and a suppression for X$^-$-induced, and explain our findings as arising from the tripartite exciton-phonon-phonon coupling. The cavity vibrational phonons provide intermediate replica states of X$^0$ for resonance conditions in the scattering of lattice phonons, thereby enhancing the Raman intensity. This tripartite coupling manifests itself via the temperature-dependent Raman linewidth. In contrast, the tripartite coupling involving X$^-$ is found to be much weaker, an observation explained by the geometry-dependent polarity of the electron and hole deformation potentials. Our results indicate that phononic hybridization between lattice and nanomechanical modes plays a key role in the excitonic photo-physics and light-matter interactions in 2D-material nanophotonic systems." @default.
- W4306175875 created "2022-10-14" @default.
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- W4306175875 date "2022-04-08" @default.
- W4306175875 modified "2023-09-26" @default.
- W4306175875 title "MoS$_2$ Exciton Coupling with Lattice Phonons and Cavity Vibrational Phonons in Hybrid Nanobeam Cavities" @default.
- W4306175875 doi "https://doi.org/10.48550/arxiv.2204.04304" @default.
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