Fig. 5: Calculated electric-field modulation of moiré superlattice potential landscape in real space.
From: Bichromatic moiré superlattices for tunable quadrupolar trions and correlated states
Moiré superlattice potential in the heterotrilayer without electric field (a), at electric field of –0.05 V/nm (c), and at electric field of –0.1 V/nm (e). The bright yellow locales are potential minima for holes. b,d,f, Schematics showing the preferred layer localization of holes under the corresponding electric field conditions. As the out-of-plane electric field is swept from 0 to –0.05 V/nm and then to –0.1 V/nm, the number of hole-potential minima increase significantly, and the hole distribution shifts toward the top WSe2 layer, accompanied by a transition of the Mott insulating state from interlayer to intralayer. The yellow, grey, and blue slabs represent the top WSe2 (R stack), middle WS2, and bottom WSe2 (H stack) layers, respectively. Colored spheres indicate holes localized in two WSe2 layers, with darker shading corresponding to higher hole density.
