Observation of both classical and quantum magnetoresistance in bilayer graphene

Magnetoresistance (MR) in bilayer graphene was experimentally investigated by varying magnetic-field strength. A transition from classical MR (superlinear dependence (B(4/3))) to quantum MR (Shubnikov-de Haas oscillations) was observed at a magnetic field of about 10 T. The superlinear MR dependence is described using a classical route by considering the large inhomogenous mobility spatial distribution of charge carriers. Our experimental results may help to provide a clear physical picture of the magneto-transport properties of inhomogenous graphene. Copyright (C) EPLA, 2011