Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HL: Fachverband Halbleiterphysik
HL 54: 2D Materials IX – Photonic properties and devices
HL 54.7: Vortrag
Freitag, 13. März 2026, 11:15–11:30, POT/0081
Temperature-Dependent Moiré Polariton Formation in Bilayer MoSe2 Integrated in DBR based Microcavities — •Chirag Palekar1, Aris Koulas-Simos1, Imad Limame1, Stephan Reitzenstein1, and Bárbara Rosa1,2 — 1Institut für Physik und Astronomie, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany — 2University of Campinas, R. Sérgio Buarque de Holanda, 777, 13085-636, Brazil
Twisted bilayer (tBL) MoSe2, which hosts moiré polaritons, when integrated into microcavities, provides a versatile platform for exploring light-matter interactions in moiré-engineered quantum materials. In the absence of the cavity, we observed the PL spectrum of the tBL exhibits multiple resonances corresponding to distinct moiré excitons. When embedded within a DBR cavity, such moiré excitons enter the strong coupling regime with the confined cavity photon mode, leading to the formation of moiré exciton-polaritons. Temperature-induced resonance tuning enables systematic control over the exciton-photon detuning, allowing modulation of the coupling strength. Remarkably, these moiré polaritons remain observable even at temperatures exceeding 150 K, underscoring the robustness of the hybridized light-matter states. Modeling the system using a coupled oscillator approach reveals a Rabi splitting as large as 11 meV. Our results demonstrate that temperature serves as an efficient external control parameter for engineering and tuning moiré exciton polaritons in twisted, atomically thin semiconductors, opening pathways toward reconfigurable polaritonic devices based on van der Waals heterostructures.
Keywords: Moiré Polariton; Microcavity polaritons; Twisted TMDC bilayers; Light-matter interaction