The infrared conductivity of graphene

Details The infrared conductivity of graphene The infrared conductivity of graphene

2008-03-19

arxiv.org/abs/0803.2816v1

EuroPhysics Letters 84, 38002 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1209/0295-5075/84/38002

We study the infrared conductivity of graphene at finite chemical potential and temperature taking into account the effect of phonons and disorder due to charged impurities and unitary scatterers. The screening of the long-range Coulomb potential is treated using the random phase approximation coupled to the coherent potential approximation. The effect of the electron-phonon coupling is studied in second-order perturbation theory. The theory has essentially one free parameter, namely, the number of charge impurities per carbon, n^{{\rm C}}_i. We find an anomalous enhancement of the conductivity in a frequency region that is blocked by Pauli exclusion and an impurity broadening of the conductivity threshold. We also find that phonons induce Stokes and anti-Stokes lines that produce an excess conductivity, when compared to the far infrared value of \sigma_0 = (\pi/2) e^2/h.

Affiliated with

Also associated with

No associations

Rating

The infrared conductivity of 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 The infrared conductivity of graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The infrared conductivity of graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-323238