id:"swepub:oai:research.chalmers.se:e576ea65-7449-4d24-9612-da7fdcf0b4ea"
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- Fitzgerald, Jamie,1992Chalmers tekniska högskola,Chalmers University of Technology (author)
Twist Angle Tuning of Moiré Exciton Polaritons in van der Waals Heterostructures
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- 2022-05-20
- American Chemical Society (ACS),2022
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:research.chalmers.se:e576ea65-7449-4d24-9612-da7fdcf0b4ea
- https://research.chalmers.se/publication/530846URI
- https://doi.org/10.1021/acs.nanolett.2c01175DOI
Supplementary language notes
- Language:English
- Summary in:English
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Notes
- Twisted atomically thin semiconductors are characterized by moiré excitons. Their optical signatures and selection rules are well understood. However, their hybridization with photons in the strong coupling regime for heterostructures integrated in an optical cavity has not been the focus of research yet. Here, we combine an excitonic density matrix formalism with a Hopfield approach to provide microscopic insights into moiré exciton polaritons. In particular, we show that exciton-light coupling, polariton energy, and even the number of polariton branches can be controlled via the twist angle. We find that these new hybrid light-exciton states become delocalized relative to the constituent excitons due to the mixing with light and higher-energy excitons. The system can be interpreted as a natural quantum metamaterial with a periodicity that can be engineered via the twist angle. Our study presents a significant advance in microscopic understanding and control of moiré exciton polaritons in twisted atomically thin semiconductors.
Subject headings and genre
- NATURVETENSKAP Fysik Atom- och molekylfysik och optik hsv//swe
- NATURAL SCIENCES Physical Sciences Atom and Molecular Physics and Optics hsv//eng
- NATURVETENSKAP Fysik Annan fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Other Physics Topics hsv//eng
- NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
- transition metal dichalcogenides
- van der Waals hetero-bilayers
- moiré excitons
- polaritons
Added entries (persons, corporate bodies, meetings, titles ...)
- Thompson, J. J.P.Philipps-Universität Marburg,Philipps University Marburg (author)
- Malic, Ermin,1980Chalmers tekniska högskola,Chalmers University of Technology,Philipps-Universität Marburg,Philipps University Marburg(Swepub:cth)ermin (author)
- Chalmers tekniska högskolaPhilipps-Universität Marburg (creator_code:org_t)
Related titles
- In:Nano Letters: American Chemical Society (ACS)22:11, s. 4468-44741530-69921530-6984
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