ABSTRACT
The electron-electron Coulomb excitations are one of the main-stream topics in condensed-matter physics; furthermore, they could present the rich and unique magnetic quantization. Up to now, a plenty of theoretical and experimental investigations are conducted on the graphene-related systems. The magneto-Coulomb excitations of monolayer will be thoroughly explored by the close association of the generalized tight-binding model and the modified random-phase approximation. The dramatic transformation of electronic excitations, which is due to the magnetic quantization, will be clearly presented by the distinct electron-hole damping regions and the main features of plasmon/magnetoplasmon modes. The magneto-electronic excitation behaviors are fully explored by the close association of the modified random-phase approximation and the generalized tight-binding model. As to Coulomb and magneto-electronic excitations, there are certain important similarities and differences among germanene, silicene, and graphene, mainly owing to the significant/negligible spin-orbit interactions and the distinct/vanishing buckled structures.
