P. Jiang, A. F. Young, W. Chang, P. Kim, L. W. Engel et al. We have measured the microwave conductance of mechanically exfoliated graphene at frequencies up to 8.5 GHz. The conductance at 4.2 K exhibits quantum oscillations, and is independent of the frequency. ... [Appl. Phys. Lett. 97, 062113 (2010)] published Fri Aug 13, 2010.
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