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arXiv · 1012.0959

Snake States in Graphene p-n Junctions

J. R. Williams·C. M. Marcus
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Abstract

We investigate transport in locally-gated graphene devices, where carriers are injected and collected along, rather than across, the gate edge. Tuning densities into the p-n regime significantly reduces resistance along the p-n interface, while resistance across the interface increases. This provides an experimental signature of snake states, which zig-zag along the p-n interface and remain stable as applied perpendicular magnetic field approaches zero. Snake states appear as a peak in transverse resistance measured along the p-n interface. The generic role of snake states disordered graphene is also discussed.

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J. R. Williams, C. M. Marcus. 2010-12-07. Snake States in Graphene p-n Junctions. https://doi.org/10.1103/physrevlett.107.046602

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