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Spin splitting in graphene studied by means of tilted magnetic-field experiments

By E.V. Kurganova, H.J. van Elferen, A. McCollam, L.A. Ponomarenko, K.S. Novoselov, A. Veligura, B.J. van Wees, J.C. Maan and U. Zeitler


We have measured the spin splitting in single-layer and bilayer graphene by means of tilted magnetic-field experiments. By applying the Lifshitz-Kosevich formula for the spin-induced decrease of the Shubnikov-de Haas amplitudes with increasing tilt angle, we directly determine the product between the carrier cyclotron mass m* and the effective g factor g* as a function of the charge-carrier concentration. By using the cyclotron mass for a single-layer and a bilayer graphene, we find an enhanced g factor g* = 2.7 ± 0.2 for both systems.

Year: 2011
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