![]() Interlayer valley excitons in heterobilayers of transition metal dichalcogenides. The many-body physics of composite bosons. Highly energy-tunable quantum light from moiré-trapped excitons. Spin–layer locking of interlayer excitons trapped in moiré potentials. Evidence for moiré excitons in van der Waals heterostructures. Signatures of moiré-trapped valley excitons in MoSe 2/WSe 2 heterobilayers. Excitons in strain-induced one-dimensional moiré potentials at transition metal dichalcogenide heterojunctions. Resonantly hybridized excitons in moiré superlattices in van der Waals heterostructures. Observation of moiré excitons in WSe 2/WS 2 heterostructure superlattices. Correlated electronic phases in twisted bilayer transition metal dichalcogenides. Correlated insulating states at fractional fillings of moiré superlattices. Broken mirror symmetry in excitonic response of reconstructed domains in twisted MoSe 2/MoSe 2 bilayers. Simulation of Hubbard model physics in WSe 2/WS 2 moiré superlattices. Mott and generalized Wigner crystal states in WSe 2/WS 2 moiré superlattices. Strongly correlated electrons and hybrid excitons in a moiré heterostructure. Our results offer a starting point for engineering both bosonic and fermionic many-body effects based on moiré excitons 14. This switching results from the competition between valley-flip and spin-flip energy relaxation pathways of photo-excited electrons during interlayer trion formation. Circularly polarized photoluminescence reveals switching from co-circular to cross-circular polarizations as moiré excitons go from being negatively charged and neutral to positively charged. We find that as moiré traps are filled with either electrons or holes, new sets of interlayer exciton photoluminescence peaks with narrow linewidths emerge about 7 meV below the energy of the neutral moiré excitons. Here, we report the observation of moiré trions and their doping-dependent photoluminescence polarization in H-stacked MoSe 2/WSe 2 heterobilayers. However, the impact of charging effects on excitons trapped in moiré potentials is poorly understood. Electronically, exotic charge orders at both integer and fractional fillings have been discovered 2, 5. The power of these systems lies in the combination of strong Coulomb interactions with the capability of controlling the charge number in a moiré potential trap. Transition metal dichalcogenide moiré bilayers with spatially periodic potentials have emerged as a highly tunable platform for studying both electronic 1, 2, 3, 4, 5, 6 and excitonic 4, 7, 8, 9, 10, 11, 12, 13 phenomena. ![]()
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