Strained bilayer graphene: Band structure topology and Landau level spectrum

Details Strained bilayer graphene: Band structure topology and Landau level spectrum Strained bilayer graphene: Band structure topology and Landau level spectrum

2011-04-26

arxiv.org/abs/1104.5029v2

Physical Review B 84, 041404 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

slightly over 4 pages, 3 figures, updated discussion and references; almost identical to the published version

Scientific paper

10.1103/PhysRevB.84.041404

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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