"Strongly correlated excitons in moiré semiconducting bilayers"
Excitons (electron-hole bound states) in moiré transition metal dichalcogenide bilayers could inherit strong correlations from the electronic degrees of freedom. In this talk, I will first demonstrate that geometry-tunable subwavelength arrays of optical emitters are realizable by incorporating the interplay between excitons and Wigner crystals of the doped charges. In particular, various excitonic band properties, including their collective decay rates and Berry curvatures, can be achieved by accessing the corresponding charge order. In addition, I will illustrate that the correlations between these excitons would render them highly non-bosonic, which manifests as a limit of their Hilbert space. Finally, I will discuss the situation where an exciton forms on top of a spin-ordered Mott insulator, which exhibits drastically suppressed dynamics due to the magnetic polaron effect.
