TY - JOUR
T1 - Fabrication of hybrid molecular devices using multi-layer graphene break junctions
AU - Island, J. O.
AU - Holovchenko, A.
AU - Koole, M.
AU - Alkemade, P. F.A.
AU - Menelaou, M.
AU - Aliaga-Alcalde, N.
AU - Burzurí, E.
AU - Van Der Zant, H. S.J.
N1 - Publisher Copyright:
© 2014 IOP Publishing Ltd.
PY - 2014/11/26
Y1 - 2014/11/26
N2 - 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.
AB - 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.
KW - Simmons tunneling model
KW - break junction
KW - copper curcuminoid molecule
KW - heat equation
KW - helium ion microsope
KW - hybrid molecular device
KW - multi-layer graphene
UR - http://www.scopus.com/inward/record.url?scp=84908583906&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84908583906&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/26/47/474205
DO - 10.1088/0953-8984/26/47/474205
M3 - Article
AN - SCOPUS:84908583906
VL - 26
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
SN - 0953-8984
IS - 47
M1 - 474205
ER -