2014/04/30 by Ken-ichi Sasaki, N. Kumada, Norio Kumada
Engineering · Materials Science · Physics and Astronomy · #Charge (physics) #Charge carrier #Condensed matter physics #Coulomb #Electron #Graphene #Graphene research and applications #Materials science #Nanotechnology #Optoelectronics #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Quantum mechanics #Screening effect #Shielded cable #Surface and Thin Film Phenomena #Surface plasmon #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.90.035449
published as Phys. Rev. B 90, 035449 (2014) · 7 pages, 4 figures
arxiv created 2014/07/17 · openalex publication_date 2014/07/29 · arxiv updated 2014/08/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Electromagnetic fields bound tightly to charge carriers in a two-dimensional sheet, namely surface plasmons, are shielded by metallic plates that are a part of a device. It is shown that for epitaxial graphenes, the propagation velocity of surface plasmons is suppressed significantly through a partial screening of the electron charge by the interface states. On the basis of analytical calculations of the electron lifetime determined by the screened Coulomb interaction, we show that the screening effect gives results in agreement with those of a recent experiment.