Strained bilayer graphene: Band structure topology and Landau level spectrum

2011/04/30 by Marcin Mucha-Kruczynski, Igor L. Aleiner, Vladimir I. Fal'ko · 1 citation
Physics and Astronomy · #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.84.041404

published as Physical Review B 84, 041404 (2011) · slightly over 4 pages, 3 figures, updated discussion and references; almost identical to the published version

arxiv created 2011/07/18 · arxiv updated 2011/07/19

Abstract

We show that topology of the low-energy band structure in bilayer graphene critically depends on mechanical deformations of the crystal which may easily develop in suspended graphene flakes. We describe the Lifshitz transition that takes place in strained bilayers upon splitting the parabollic bands at intermediate energies into several Dirac cones at the energy scale of few meV. Then, we show how this affects the electron Landau level spectra and the quantum Hall effect.

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• Landau levels in deformed bilayer graphene at low magnetic fields

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