Gap opening in the zeroth Landau level of graphene

Details Gap opening in the zeroth Landau level of graphene Gap opening in the zeroth Landau level of graphene

2009-04-06

arxiv.org/abs/0904.0948v1

Physical Review B 80, 201430(R) (2009).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.80.201403

We have measured a strong increase of the low-temperature resistivity $\rho_{xx}$ and a zero-value plateau in the Hall conductivity $\sigma_{xy}$ at the charge neutrality point in graphene subjected to high magnetic fields up to 30 T. We explain our results by a simple model involving a field dependent splitting of the lowest Landau level of the order of a few Kelvin, as extracted from activated transport measurements. The model reproduces both the increase in $\rho_{xx}$ and the anomalous $\nu=0$ plateau in $\sigma_{xy}$ in terms of coexisting electrons and holes in the same spin-split zero-energy Landau level.

Affiliated with

Also associated with

No associations

Rating

Gap opening in the zeroth Landau level 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 Gap opening in the zeroth Landau level of graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gap opening in the zeroth Landau level of graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-133445