Effects of Screening on Propagation of Graphene Surface Plasmons

Abstract

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.

7 pages, 4 figures

References in corpus (5)

• Dielectric function, screening, and plasmons in 2D graphene
• Dynamical polarization of graphene at finite doping
• A new electromagnetic mode in graphene
• Impact of graphene quantum capacitance on transport spectroscopy
• Decay and Frequency Shift of Inter and Intravalley Phonons in Graphene -Dirac Cone Migration-

Cited by in corpus (3)

• On-chip transfer of ultrashort graphene plasmon wavepackets using terahertz electronics
• Plasmon-plasmon interaction and the role of buffer in epitaxial graphene micro-flakes
• Residual gauge theory for quanta of surface plasmons