Irradiated bilayer graphene

Details Irradiated bilayer graphene Irradiated bilayer graphene

2010-11-12

arxiv.org/abs/1011.3043v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

14 pages, accepted for publication in Nanotechnology

Scientific paper

We describe the gated bilayer graphene system when it is subjected to intense terahertz frequency electromagnetic radiation. We examine the electron band structure and density of states via exact diagonalization methods within Floquet theory. We find that dynamical states are induced which lead to modification of the band structure. We first examine the situation where there is no external magnetic field. In the unbiased case, dynamical gaps appear in the spectrum which manifest as dips in the density of states. For finite interlayer bias (where a static gap is present in the band structure of unirradiated bilayer graphene), dynamical states may be induced in the static gap. These states can show a high degree of valley polarization. When the system is placed in a strong magnetic field, the radiation induces coupling between the Landau levels which allows dynamical levels to exist. For strong fields, this means the Landau levels are smeared to form a near-continuum of states.

Affiliated with

Also associated with

No associations

Rating

Irradiated bilayer graphene does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Irradiated bilayer graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Irradiated bilayer graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-444806