Klein tunneling in graphene under substrate electric field

A. Yamakage (1) , K. I. Imura (1) , Jérôme Cayssol (2) , Y. Kuramoto (1)

1 Department of Physics
2 CPMOH - Centre de physique moléculaire optique et hertzienne

The pn junction in mono-layer graphene with both intrinsic and Rashba spin-orbit interactions is studied theoretically. We show that a crossover from perfect reflection to perfect transmission occurs at normal incidence by tuning perpendicular electric field. Angular dependent reflection probability enabled us to distinguish the perfect reflection from trivial band gap effects.

A. Yamakage, K. I. Imura, Jérôme Cayssol, Y. Kuramoto. Klein tunneling in graphene under substrate electric field. 14th International conference on Narrow Gap Semiconductors and Systems, Jul 2009, Sendai, Japan. pp.1243-1248, ⟨10.1016/j.phpro.2010.01.170⟩. ⟨hal-00505823⟩