C. M. Ojeda-Aristizabal, M. Ferrier, S. Gueron, H. Bouchiat
Published 2009-03-17Version 1
We have tuned in situ the proximity effect in a single graphene layer coupled to two Pt/Ta superconducting electrodes. An annealing current through the device changed the transmission coefficient of the electrode/graphene interface, increasing the probability of multiple Andreev reflections. Repeated annealing steps improved the contact sufficiently for a Josephson current to be induced in graphene.
Comments: Accepted for publication in Phys. Rev. B
Journal: Phys. Rev. B 79, 165436 (Published 28 April 2009)
Dynamical Coulomb blockade of multiple Andreev reflections
Multiple Andreev reflections in hybrid multiterminal junctions
Coulomb Blockade of Proximity Effect at Large Conductance
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