Intralayer Phonons in Multilayer Graphene Moiré Superlattices
Atomic displacements of Davydov components of nonfolded ZO modes based on FCM. (a) A supercell and (b) atomic displacements of the mode in 2LG. 1 and 2 are the lattice vectors of the unit cell in graphene, and L1 and L2 correspond to the lattice vectors of the moiré unit cell in with . Atomic displacements of (c) , (d) , and (e) . Color codes are based on the amplitudes of atomic displacements.