Quantum Hall Effects in Graphene-Based Two-Dimensional Electron Systems

Details Quantum Hall Effects in Graphene-Based Two-Dimensional Electron Systems Quantum Hall Effects in Graphene-Based Two-Dimensional Electron Systems

2011-10-05

arxiv.org/abs/1110.1069v1

Nanotechnology 23 052001 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

In this article we review the quantum Hall physics of graphene based two-dimensional electron systems, with a special focus on recent experimental and theoretical developments. We explain why graphene and bilayer graphene can be viewed respectively as J=1 and J=2 chiral two-dimensional electron gases (C2DEGs), and why this property frames their quantum Hall physics. The current status of experimental and theoretical work on the role of electron-electron interactions is reviewed at length with an emphasis on unresolved issues in the field, including assessing the role of disorder in current experimental results. Special attention is given to the interesting low magnetic field limit and to the relationship between quantum Hall effects and the spontaneous anomalous Hall effects that might occur in bilayer graphene systems in the absence of a magnetic field.

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