Fig. 1: Angle-aligned multilayer WSe2/monolayer WS2 moiré superlattice.
From: Tuning moiré excitons and correlated electronic states through layer degree of freedom
a Schematic of the multilayer WSe2/monolayer WS2 heterojunction devices, with the heterojunctions encapsulated with flakes of BN on both sides. The few-layer-graphene (FLG) works as the back gate electrode. b Differential reflectance spectra of different regions at zero gate voltage. c–e are the differential reflectance spectra as a function of the gate voltage (density of carriers) at the region of 1 L/1 L, 2 L/1 L, and 3 L/1 L WSe2/WS2. All data were taken at 4.5 K.
