Observation of both classical and quantum magnetoresistance in bilayer graphene
State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University - Beijing 100871, PRC
2 CRANN and School of Physics, Trinity College Dublin - Dublin 2, Ireland, EU
Accepted: 20 April 2011
Magnetoresistance (MR) in bilayer graphene was experimentally investigated by varying magnetic-field strength. A transition from classical MR (superlinear dependence (B4/3)) 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.
PACS: 72.80.Vp – Electronic transport in graphene
© EPLA, 2011