Abstract:
Plasmon collective excitations are studied in a planar graphene superlattice formed by periodically alternating regions of gapless graphene and of its gapped modification. The plasmon dispersion law is determined both for the quasi-one-dimensional case (the Fermi level is located within the minigap) and for the quasi-two-dimensional case (the Fermi level is located within the miniband). The problem concerning the absorption of modulated electromagnetic radiation at the excitation of plasmons is also considered.
Citation:
P. V. Ratnikov, A. P. Silin, “Plasmons in a planar graphene superlattice”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:11 (2015), 823–829; JETP Letters, 102:11 (2015), 713–719