Hall effect in multilayer graphenes

Abstract

We discuss Hall effect of multilayer graphenes with several stacking structures (Bernal, rhombohedral and simple hexagonal) in strong- and weak-magnetic field regimes. For bilayer systems in strong-magnetic field region, we observed crossover of integer quantum Hall effect from two independent monolayer type system to strongly coupled bilayer systems by changing the ratio of interlayer hopping energy and the Fermi energy. In weak-magnetic field regime of few layer systems, Hall conductivity shows plateaux as functions of Fermi energy which reflects difference of stacking structures. © 2009 IOP Publishing Ltd.