Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 26, Issue 47, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/26/47/474205
Keywords
hybrid molecular device; multi-layer graphene; break junction; helium ion microsope; heat equation; Simmons tunneling model; copper curcuminoid molecule
Categories
Funding
- Dutch organization for Fundamental Research on Matter (FOM)
- NWO/OCW
- Dutch Technology Foundation STW
- EU FP7 project [618082 ACMOL]
- advanced ERC grant
- ICREA Funding Source: Custom
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We report on the fabrication of hybrid molecular devices employing multi-layer graphene (MLG) flakes which are patterned with a constriction using a helium ion microscope 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.
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