Affordable Access

Publisher Website

Coulomb screening and collective excitations in biased bilayer graphene

Authors
  • Wang, Xue-Feng
  • Chakraborty, Tapash
Type
Published Article
Publication Date
Jan 15, 2010
Submission Date
Jan 15, 2010
Identifiers
DOI: 10.1103/PhysRevB.81.081402
Source
arXiv
License
Yellow
External links

Abstract

We have investigated the Coulomb screening properties and plasmon spectrum in a bilayer graphene under a perpendicular electric bias. The bias voltage applied between the two graphene layers opens a gap in the single particle energy spectrum and modifies the many-body correlations and collective excitations. The energy gap can soften the plasmon modes and lead to a crossover of the plasmons from a Landau damped mode to being undamped. Plasmon modes of long lifetime may be observable in experiments and may have potentials for device applications.

Report this publication

Statistics

Seen <100 times