Cavity exciton polaritons in two-dimensional semiconductors from first principles
| Autor: | Dino Novko, Vito Despoja |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Photon
Exciton Ab initio FOS: Physical sciences Physics::Optics 02 engineering and technology Exciton-polaritons 01 natural sciences Condensed Matter::Materials Science 0103 physical sciences 010306 general physics Condensed Matter::Quantum Gases Physics Condensed Matter - Materials Science Condensed matter physics Condensed Matter::Other business.industry Materials Science (cond-mat.mtrl-sci) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Semiconductor Exciton polariton Transition-metal dichalcogenide Semiconductor microcavities DFT 0210 nano-technology business Physics - Optics Optics (physics.optics) |
| Zdroj: | Physical Review Research. 3 |
| ISSN: | 2643-1564 |
| Popis: | Two-dimensional (2D) semiconducting microcavity, where exciton-polaritons can be formed, constitues a promising setup for exploring and manipulating various regimes of light-matter interaction. Here, the coupling between 2D excitons and metallic cavity photons is studied by using first-principles propagator technique. The strength of exciton-photon coupling is characterised by its Rabi splitting to two exciton-polaritons, which can be tuned by cavity thickness. Maximum splitting of 128 meV is achieved in phosporene cavity, while remarkable value of about 440 meV is predicted in monolayer hBN device. The obtained Rabi splittings in WS$_2$ microcavity are in excellent agreement with the recent experiments. Present methodology can aid in predicting and proposing potential setups for trapping robust 2D exciton-polariton condensates. Comment: 6 pages, 5 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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