Pb-graphene-Pb Josephson junctions: characterization in B field

Abstract

We fabricate superconductor-graphene-superconductor Josephson junctions with superconducting regions made of lead (Pb). The critical current through grapehene may be modulated by external magnetic field; the resulting Fraunhofer interference pattern shows several periods of oscillations, indicating 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.

4 pages, 5 figures

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Cited by in corpus (6)

• Ballistic graphene Josephson junctions from the short to the long regime
• Proximity coupling in superconductor-graphene heterostructures
• Phonon bottleneck in graphene-based Josephson junctions at millikelvin temperatures
• Pb/InAs nanowire Josephson junction with high critical current and magnetic flux focusing
• Critical current scaling in long diffusive graphene-based Josephson junctions
• 2${\Phi }_0$-periodic magnetic interference in ballistic graphene Josephson junctions