  The electronic transport properties of epitaxial monolayer graphene (MLG) and
hydrogen-intercalated quasi free-standing bilayer graphene (QFBLG) on SiC(0001)
are investigated by micro multi-point probes. Using a probe with 12 contacts,
we perform four-point probe measurements with the possibility to effectively
vary the contact spacing over more than one order of magnitude, allowing us to
establish that the transport is purely two-dimensional. Combined with the
carrier density obtained by angle-resolved photoemission spectroscopy, we find
the room temperature mobility of MLG to be (870+-120)cm2/Vs. The transport in
QFBLG is also found to be two-dimensional with a mobility of (1600+-160)
cm2/Vs.
