On the universal AC optical background in graphene

Details On the universal AC optical background in graphene On the universal AC optical background in graphene

2009-08-19

arxiv.org/abs/0908.2803v2

New J. Phys. 11 (2009) 095013

Physics

Condensed Matter

Strongly Correlated Electrons

18 pages, 4 figures; v2: to match New J. Phys. (Focus on Graphene issue)

Scientific paper

10.1088/1367-2630/11/9/095013

The latest experiments have confirmed the theoretically expected universal value $\pi e^2/2h$ of the ac conductivity of graphene and have revealed departures of the quasiparticle dynamics from predictions for the Dirac fermions in idealized graphene. We present analytical expressions for the ac conductivity in graphene which allow one to study how it is affected by interactions, temperature, external magnetic field and the opening of a gap in the quasiparticle spectrum. We show that the ac conductivity of graphene does not necessarily give a metrologically accurate value of the von Klitzing constant $h/e^2$, because it is depleted by the electron-phonon interaction. In a weak magnetic field the ac conductivity oscillates around the universal value and the Drude peak evolves into a peak at the cyclotron frequency.

Affiliated with

Also associated with

No associations

Rating

On the universal AC optical background in 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 On the universal AC optical background in graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the universal AC optical background in graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-216753