  We report on the fabrication of hybrid molecular devices employing multilayer
graphene (MLG) flakes which are patterned with a constriction using a helium
ion microscope (HIM) or an oxygen plasma etch. The patterning step allows for
the localization of a few-nanometer gap, created by electroburning, that can
host single molecules or molecular ensembles. By controlling the width of the
sculpted constriction, we regulate the critical power at which the
electroburning process begins. We estimate the flake temperature given the
critical power and find that at low powers it is possible to electroburn MLG
with superconducting contacts in close proximity. Finally, we demonstrate the
fabrication of hybrid devices with superconducting contacts and
anthracene-functionalized copper curcuminoid molecules. This method is
extendable to spintronic devices with ferromagnetic contacts and a first step
towards molecular integrated circuits.
