Fig. 2: Moiré-phase maps for different twist angles in the space of externally applied homogeneous strains.

a–d A single point in a map represents a relaxed T3LG commensurate Moiré-superlattice. The corresponding Moiré-phases are indicated with different colors (yellow–convex, purple–nanomesh, red–chain). As the twist angle increases the phase boundaries move, and the chain phase becomes dominant. e–h The same phase-maps as a–d, but colored by the corrugation of the relaxed Moiré-superlattices. The dark areas show the ultra-flat states around the phase boundaries. On the side of the green shaded area, the overlayer corrugation is shown, while on the gray side the substrate corrugation is displayed, in order to show the ultra-flat states both in the overlayer and in the substrate.