Graphene on incommensurate substrates: trigonal warping and emerging Dirac cone replicas with halved group velocity

Carmine Ortix, Liping Yang, Jeroen van den Brink

The adhesion of graphene on slightly lattice-mismatched surfaces, for instance of hexagonal boron nitride (hBN) or Ir(111), gives rise to a complex landscape of sublattice symmetry…