Fig. 5: Moiré potential in near-60°-twisted bilayer BN.

a Three stacking orders that exist in near-60°-twisted bilayer BN⁶⁵. In AA’ stacking (left), B and N atoms align on top of each other alternatively. Here,’ means one layer is rotated by 60° with respect to the other. In AB’ stacking (middle), N sits on top of N. In BA’ stacking (right), B sits on top of B. All of these stacking arrangements have an inversion center, and therefore no net polarization is allowed. b Schematic of near-60°-twisted bilayer BN, where moiré patterns form with AA’, AB’, and BA’ local stacking arrangements. c Device schematic of D1. The target layer sits on top of a near-60°-twisted bilayer BN. The stack is encapsulated between the top and bottom BN and controlled by a top metal gate and a bottom graphite gate. d ρ_xx as a function of n in device D1 with near-60°-twisted bilayer BN, measured at 4.2 K. Arrows indicate the positions of the satellite resistance peaks. Inset: Large-scale plot. e ρ_xx as a function of n and B (right y axis: ϕ/ϕ₀), measured at 0.3 K in device D1. f Density functional theory (DFT) calculation of the interlayer distance d₀ between the two near-60°-twisted monolayer BNs at different moiré sites. x: fractions of the moiré unit cell.