Fig. 5: Electric field on the h-BN surface.
From: Universal superlattice potential for 2D materials from twisted interface inside h-BN substrate
a Electric lines of forces from the laterally modulated polarization P(R) of a single twisted parallel interface with periodicity b at z = 0. Interlayer exciton in a bilayer on the h-BN surface can thus experience a superlattice potential from the lateral modulation of out-of-plane field Ez. b Spatial profile of Ez and total field strength |E| along the long diagonal of a supercell, at a vertical distance of Z = 2d from a single interface with δ = 2°. c Ez and |E| on the surface of a 20-layer film under torsion with δ = 1°, along the dashed line in Fig. 4e.
