期刊
PHYSICAL REVIEW LETTERS
卷 126, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.227401
关键词
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资金
- European Research Council [ERC-2015-AdG-694097]
- Grupos Consolidados [IT1249-19]
- Cluster of Excellence CUI: Advanced Imaging of Matter of the Deutsche Forschungsgemeinschaft (DFG)-EXC 2056 [390715994]
- Alexander von Humboldt foundation
- US Department of Energy, BES DMSE
- Gordon and Betty Moore Foundations EPiQS Initiative [GBMF9459]
Phonoritons are elementary excitations predicted to emerge from hybridization between exciton, phonon, and photon, with potential applications in energy conversion and thermal transport. The appearance of phonoritonic features in monolayer hexagonal boron nitride (h-BN) embedded in an optical cavity has been theoretically predicted, providing an experimental pathway for observation and tuning of material properties.
A phonoriton is an elementary excitation that is predicted to emerge from hybridization between exciton, phonon, and photon. Besides the intriguing many-particle structure, phonoritons are of interest as they could serve as functional nodes in devices that utilize electronic, phononic, and photonic elements for energy conversion and thermal transport applications. Although phonoritons are predicted to emerge in an excitonic medium under intense electromagnetic wave irradiation, the stringent condition for their existence has eluded direct observation in solids. In particular, on-resonance, intense pumping schemes have been proposed, but excessive photoexcitation of carriers prevents optical detection. Here, we theoretically predict the appearance of phonoritonic features in monolayer hexagonal boron nitride (h-BN) embedded in an optical cavity. The coherent superposition nature of phonoriton states is evidenced by the hybridization of exciton-polariton branches with phonon replicas that is tunable by the cavity-matter coupling strength. This finding simultaneously provides an experimental pathway for observing the predicted phonoritons and opens a new avenue for tuning materials properties.
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