2008/08/01 by Oleg L. Berman, Godfrey Gumbs, Yu. E. Lozovik +1 · 80 citations
Engineering · Materials Science · Physics and Astronomy · #Bilayer graphene #Condensed matter physics #Dispersion relation #Graphene #Graphene research and applications #Instability #Magnetic field #Materials science #Nanotechnology #Optoelectronics #Perpendicular #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Quantum mechanics #Superlattice #Terahertz radiation #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.78.085401
published in Physical Review B 78(8) (American Physical Society) · 5 pages, 4 figures
openalex publication_date 2008/08/01 · arxiv created 2008/08/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We calculate the dispersion equations for magnetoplasmons in a single layer, a pair of parallel layers, a graphite bilayer, and a superlattice of graphene layers in a perpendicular magnetic field. We demonstrate the feasibility of a drift-induced instability of magnetoplasmons. The magnetoplasmon instability in a superlattice is enhanced compared to a single graphene layer. The energies of the unstable magnetoplasmons could be in the terahertz (THz) part of the electromagnetic spectrum. The enhanced instability makes superlattice graphene a potential source of THz radiation.