Fig. 2: Theoretical simulation of moiré excitons.
From: Tuning moiré excitons and correlated electronic states through layer degree of freedom
a, b are the energy bands of bare intralayer A excitons in 1 L WSe2 and moiré excitons in 1 L/1 L WSe2/WS2, respectively. a The A exciton bands are folded into the mini-Brillouin zone of the moiré superlattice to compare directly with that of moiré excitons in b. Inset of a shows the schematic of the mini-Brillouin zone and the label of high symmetry points. The WSe2 bright intralayer A exciton state is marked by \({X}_{{{{{{\rm{A}}}}}}}\) in a. The three bright Moiré exciton states are marked by \({X}_{{{{{{\rm{I}}}}}}}^{1{{{{{\rm{L}}}}}}}\), \({X}_{{{{{{\rm{II}}}}}}}^{1{{{{{\rm{L}}}}}}}\), and \({X}_{{{{{{\rm{III}}}}}}}^{1{{{{{\rm{L}}}}}}}\) in b. Here, we set the energy \({E}_{{{{{{\rm{A}}}}}}}\) of \({X}_{{{{{{\rm{A}}}}}}}\) as the energy reference. c–e Optical absorption spectra in 1 L/1 L, 2 L/1 L, and 3 L/1 L WSe2/WS2. The interlayer hybridization between moiré exciton and intralayer A exciton is considered in d and e, with details elaborated in Supplementary Information Note 2.
