Light-matter coupling with two-dimensional tellurides
Final Report Abstract
The project addressed the important problem, whether MoTe2 is a suitable material for strong coupling research in the framework of cavity QED, and to which extent Telluride-based polariton lasers come within reach at telecommunication wavelength. While we have confirmed that strong coupling phenomena and magneto-polaritonics are possible to observe based on MoTe2 mono- and bilayers, our attempts to extent the available wavelength range towards 1300 nm via strain-techniques were less fruitful. We also could not observe clear-cut features of polariton laser operation in our samples. However, the project clearly laid the foundation of future ongoing works in the Oldenburg group, since, during the course of this project, we realized the MoTe2/MoSe2 heterostructures are likely displaying signs of high-oscillator strength dipolar excitons. Such excitons are of paramount interest for non-linear polariton experiments, and are currently explored in Oldenburg. Our studies in this project furthermore revealed, that electron-gases have a strong impact on the magneto-polaritonic response, which is another topic of high interest that is currently followed in Oldenburg. Last, during the project, MoTe2 bilayer emerged as one of the most interesting materials to realize fractional quantum Hall states without external magnetic fields. This project could pave the way to explore such exotic phases in the strong coupling regime.
Publications
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Coupling of WS2 monolayer excitons in a photonic lattice at room temperature. Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS), Münster, Germany (2020)
Lackner, Lukas
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Tunable exciton-polaritons emerging from WS2 monolayer excitons in a photonic lattice at room temperature. Conference on Lasers and Electro-Optics (CLEO Europe), München, Germany (2021)
Lackner, Lukas
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Angle- and polarization-resolved luminescence from suspended and hexagonal boron nitride encapsulated MoSe2 monolayers. Optica, 9(10), 1190.
Han, Bo; Stephan, Sven; Thompson, Joshua J. P.; Esmann, Martin; Antón-Solanas, Carlos; Shan, Hangyong; Kunte, Nils; Brem, Samuel; Tongay, Sefaattin; Lienau, Christoph; Watanabe, Kenji; Taniguchi, Takashi; Silies, Martin; Malic, Ermin & Schneider, Christian
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Exploring the effect of dielectric screening on neutral and charged-exciton properties in monolayer and bilayer MoTe2. Applied Physics Reviews, 9(4).
Kutrowska-Girzycka, J.; Zieba-Ostój, E.; Biegańska, D.; Florian, M.; Steinhoff, A.; Rogowicz, E.; Mrowiński, P.; Watanabe, K.; Taniguchi, T.; Gies, C.; Tongay, S.; Schneider, C. & Syperek, M.
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Valley-exchange coupling probed by angle-resolved photoluminescence. Nanoscale Horizons, 7(1), 77-84.
Thompson, Joshua J. P.; Brem, Samuel; Fang, Hanlin; Antón-Solanas, Carlos; Han, Bo; Shan, Hangyong; Dash, Saroj P.; Wieczorek, Witlef; Schneider, Christian & Malic, Ermin
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Controlling Excitons in van-der-Waals Materials via tunable open cavities. Excitonics and Polaritonics Conference (EPIC), Singapore, (2023)
Schneider, Christian
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Controlling Excitons in van-der-Waals Materials via tunable open cavities. International Nano and Optoelectronic Workshop (INOW), Würzburg, Germany (2023)
Schneider, Christian
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Controlling the radiation dynamics of MoSe2/WSe2 interlayer excitons via in-situ tuning the electromagnetic environment
Han, C. Palekar, S. Stephan, F. Lohof, A. Steinhoff, J.C. Drawer, V. Mitryakhin, L. Lackner, M. Silies, B. Rosa, M. Esmann, F. Eilenberger, C. Gies, S. Reitzenstein & C. Schneider
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Spectrally and topologically tunable polaritons based on two-dimensional crystals in a photonic lattice. Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS), München, Germany (2023)
Lackner, Lukas
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Weak and Strong Coupling of Quantum Materials in Low-Temperature Tunable Microcavities. German-French-Korean workshop on Nanophotonics, Würzburg, Germany (2023)
Bo, Han
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Controlling Excitons in van-der-Waals Materials via tunable open cavities. 2D Materials Workshop, Munich, Germany (2024)
Lackner, Lukas
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Controlling Excitons in van-der-Waals Materials via tunable open cavities. ICII, Marburg, Germany (2024)
Schneider, Christian
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Controlling Excitons in van-der-Waals Materials via tunable open cavities. Institute Colloquium, Münster, Germany (2024)
Schneider, Christian
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Correlated magnetism of moiré exciton-polaritons on a triangular electron-spin lattice
J. Scherzer, L. Lackner, B. Han, B. Polovnikov, L. Husel, J. Göser, Z. Li, J.C. Drawer, M. Esmann, C. Bennenhei, F. Eilenberger, K. Watanabe, T. Taniguchi, A.S. Baimuratov, C. Schneider & A. Högele
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Correlated magnetism of moiré exciton-polaritons on a triangular electron-spin lattice. Physics of Excitons and Polaritons in Semiconductors (PEPS), Reykyavik, Iceland (2024)
Lackner, Lukas
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Infrared Magneto-Polaritonics and In-Situ Tuning of Exciton Dynamics in Two-Dimensional Crystals and Heterostructures in a Cryogenic Open Cavity, Flatlands, Wrocław, Poland, (2024)
Bo, Han
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Infrared magneto-polaritons in MoTe2 mono-and bilayers
Han, J.M. Fitzgerald, L. Lackner, R. Rosati, M. Esmann, F. Eilenberger, T. Taniguchi, K. Watanabe, M. Syperek, E. Malic & C. Schneider
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Revealing Dark Exciton Signatures in Polariton Spectra of 2D Materials. ACS Photonics, 11(6), 2215-2220.
Ferreira, Beatriz; Shan, Hangyong; Rosati, Roberto; Fitzgerald, Jamie M.; Lackner, Lukas; Han, Bo; Esmann, Martin; Hays, Patrick; Leibeling, Gilbert; Watanabe, Kenji; Taniguchi, Takashi; Eilenberger, Falk; Tongay, Sefaattin; Schneider, Christian & Malic, Ermin
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Topologically Tunable Polaritons Based on a Two-Dimensional Crystal in a Photonic Lattice. Physical Review Letters, 135(16).
Lackner, L.; Egorov, O. A.; Ernzerhof, A.; Bennenhei, C.; Mitryakhin, V. N.; Leibeling, G.; Eilenberger, F.; Tongay, S.; Peschel, U.; Esmann, M. & Schneider, C.
