Phys. Rev. B 77, 081404(R) (2008) - Conductance quantization and snake states in graphene magnetic waveguides

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Conductance quantization and snake states in graphene magnetic waveguides

T. K. Ghosh, A. De Martino, W. Häusler, L. Dell’Anna, and R. Egger

Phys. Rev. B 77, 081404(R) – Published 12 February 2008

Abstract

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

Received 14 August 2007

DOI:https://doi.org/10.1103/PhysRevB.77.081404

©2008 American Physical Society

Authors & Affiliations

T. K. Ghosh, A. De Martino, W. Häusler, L. Dell’Anna, and R. Egger

Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany

See Also

Theory of snake states in graphene

L. Oroszlány, P. Rakyta, A. Kormányos, C. J. Lambert, and J. Cserti

Phys. Rev. B 77, 081403(R) (2008)

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Issue

Vol. 77, Iss. 8 — 15 February 2008

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