Using graphene to track the conductivity of C$_{60}$

C$_{60}$ exhibits superconductivity when intercalated with alkali metals [1,2]. This intercalation originates charge doping as well as a modification of the lattice constant, giving rise to an increased density of states at the Fermi energy of C$_{60}$. Here we study the change of the electronic transport in C$_{60}$ by charge doping alone. We deposit C$_{60}$ on a graphene device that has two metallic electrodes and a back gate. By measuring the conductance of graphene, we track any changes in the conductance of C$_{60}$, connected in parallel to graphene. We will show preliminary transport data that demonstrates charge transfer into C$_{60}$. \\[4pt] [1] A. F. Hebard, M.J. Rosseinsky, R. C. Haddon, D. W. Murphy, S. H. Glarum, T.T. M. Palstra, A. P. Ramirez and A. R. Kortan. Nature 350, 600 (1991).\\[0pt] [2] R. M. Fleming, A.P. Ramirez, M.J. Rosseinsky, D. W. Murphy, R.C. Haddon, S. M. Zahurak and A. V. Makhija. Nature 352, 787 (1991).