Fig. 3: Layer dependence of the electronic flat miniband for WSe2/WS2 moiré superlattices.
From: Tuning moiré excitons and correlated electronic states through layer degree of freedom
a–c are calculated electronic bandstructure of the valence band in 1 L/1 L WSe2/WS2, 2 L/1 L WSe2/WS2, 3 L/1 L WSe2/WS2, respectively (details in Supplementary Information Note 3), with the moiré flat band from the 1st layer WSe2 labeled in red. d–f are differential reflectance intensity of the lowest energy moiré exciton (\({X}_{{{\rm{I}}}}\)) as a function of the back gate voltage (carrier density) in Fig. 1c–e, respectively (vertical dashed line cuts), with the 2D color plots showing the enhanced reflectance spectra near the moiré excitons \({X}_{{{\rm{II}}}}\) and \({X}_{{{\rm{III}}}}\).
