Graphene n-p junction in a strong magnetic field: a semiclassical study

Details Graphene n-p junction in a strong magnetic field: a semiclassical study Graphene n-p junction in a strong magnetic field: a semiclassical study

2010-03-15

arxiv.org/abs/1003.2983v2

Phys. Rev. B 81, 241406(R) (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 2 figures

Scientific paper

10.1103/PhysRevB.81.241406

We provide a semiclassical description of the electronic transport through graphene n-p junctions in the quantum Hall regime. A semiclassical approximation for the conductance is derived in terms of the various snake-like trajectories at the interface of the junction. For a symmetric (ambipolar) configuration, the general result can be recovered by means of a simple scattering approach, providing a very transparent qualitative description of the problem under study. Consequences of our findings for the understanding of recent experiments are discussed.

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