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Pb–Graphene–Pb Josephson Junctions: Characterization in Magnetic Field

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4 Author(s)
I. V. Borzenets ; Duke University, Durham, NC, USA ; U. C. Coskun ; H. Mebrahtu ; G. Finkelstein

We fabricate superconductor-graphene-superconductor Josephson junctions with superconducting regions made of lead (Pb). The critical current through graphene may be modulated by the external magnetic field; the resulting Fraunhofer interference pattern shows several periods of oscillations, suggesting that the junction is uniform. Deviations from the perfect Fraunhofer pattern are observed, and their cause is explained by a simulation that takes into account the sample design.

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:22 ,  Issue: 5 )