Theromelectricity in Graphene: Effects of a gap and magnetic fields

Details Theromelectricity in Graphene: Effects of a gap and magnetic fields Theromelectricity in Graphene: Effects of a gap and magnetic fields

2010-09-13

arxiv.org/abs/1009.2343v1

Physics

Condensed Matter

Materials Science

5 pages and 4 figures

Scientific paper

We calculate the thermopower of monolayer graphene in various circumstances. First we show that experiments on the thermopower of graphene can be understood quantitatively with a very simple model of screening in the semiclassical limit. We can calculate the energy dependent scattering time for this model exactly. We then consider acoustic phonon scattering which might be the operative scattering mechanism in free standing films, and predict that the thermopower will be linear in any induced gap in the system. Further, the thermopower peaks at the same value of chemical potential (tunable by gate voltage) independent of the gap. Finally, we show that in the semiclassical approximation, the thermopower in a magnetic field saturates at high field to a value which can be calculated exactly and is independent of the details of the scattering. This effect might be observable experimentally.

Affiliated with

Also associated with

No associations

Rating

Theromelectricity in Graphene: Effects of a gap and magnetic fields 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 Theromelectricity in Graphene: Effects of a gap and magnetic fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theromelectricity in Graphene: Effects of a gap and magnetic fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-337453