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Charge accumulation at the boundaries of a graphene strip induced by a gate voltage: Electrostatic approach

P. G. Silvestrov and K. B. Efetov
Phys. Rev. B 77, 155436 – Published 28 April 2008

Abstract

The distribution of charge induced by a gate voltage in a graphene strip is investigated. We analytically calculate the charge profile and demonstrate a strong (macroscopic) charge accumulation along the boundaries of a micrometer-wide strip. This charge inhomogeneity is especially important in the quantum Hall regime, where we predict the doubling of the number of edge states and the coexistence of two different types of such states. Applications to graphene-based nanoelectronics are discussed.

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  • Received 27 March 2008

DOI:https://doi.org/10.1103/PhysRevB.77.155436

©2008 American Physical Society

Authors & Affiliations

P. G. Silvestrov1 and K. B. Efetov1,2

  • 1Theoretische Physik III, Ruhr-Universität Bochum, 44780 Bochum, Germany
  • 2L. D. Landau Institute for Theoretical Physics, 117940 Moscow, Russia

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Issue

Vol. 77, Iss. 15 — 15 April 2008

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