Journals of the American Physical Society - Conductance quantization and snake states in graphene magnetic waveguides

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January 2008, to be published in Physical Review B15

Conductance quantization and snake states in graphene magnetic waveguides
T. K. Ghosh, A. De Martino, W. H\"{a}usler, L. Dell'Anna, and R. Egger

We consider electron waveguides (quantum wires) in graphene created by suitable inhomogeneous magnetic fields. The properties of uni-directional snake states are discussed. For a certain magnetic field profile, two spatially separated counter-propagating snake states are formed, leading to conductance quantization insensitive to backscattering by impurities or irregularities of the magnetic field.

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