Angle-dependent carrier transmission in graphene p-n junctions.

Sutar, S; Comfort, E S; Liu, J; Taniguchi, T; Watanabe, K; Lee, J U · Nano Lett · 2012

basic_science · Level V

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Abstract

Angle-dependent carrier transmission probability in graphene p-n junctions is investigated. Using electrostatic doping from buried gates, p-n junctions are formed along graphene channels that are patterned to form different angles with the junction. A peak in the junction resistance is observed, which becomes pronounced with angle. This angular dependence is observed for junctions made on both exfoliated and CVD-grown graphene and is consistent with the theoretically predicted dependence of transmission probability on incidence angle.

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