Spin splitting in graphene studied by means of tilted magnetic-field   experiments
  We have measured the spin splitting in single-layer and bilayer graphene by means of tilted magnetic field experiments. 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. Using the cyclotron mass for a single-layer and a bilayer graphene we find an enhanced g-factor g* = 2.7 \pm 0.2 for both systems. 
E. V. Kurganova, H. J. van Elferen, A. McCollam, L. A. Ponomarenko, K.   S. Novoselov, A. Veligura, B. J. van Wees, J. C. Ma...
cond-mat.mes-hall