Correlated excitonic phases in semiconductor moiré superlattices

Moiré superlattices, formed by stacking and twisting two-dimensional (2D) crystals, have emerged as a remarkable platform for investigating strongly correlated phases. The drastic modification of the low-energy electronic properties by the moiré superlattice is responsible for these rich physical phenomena. It was recently demonstrated that many-body excitonic states can also exhibit correlated insulating phases in transition metal dichalcogenide (TMD) moiré superlattices. In this study, we explore the effect of exciton-exciton interaction in a finite population of moiré excitons generated by optical excitations and identify excitonic correlated phases. Our research paves the way for future exploration of bosonic correlated states in moiré superlattices.