Session V23: Superconductivity: Josephson Effects II

8:00 AM–10:36 AM, Thursday, March 24, 2011
Room: D165

Sponsoring Unit: DCMP
Chair: Victor Vakaryuk, Argonne National Laboratory

Abstract ID: BAPS.2011.MAR.V23.6

Abstract: V23.00006 : Periodic critical current pattern in the superconductor-graphene-superconductor junction induced by the current in one of the leads

9:00 AM–9:12 AM

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  Ulas Coskun
    (UT Dallas)

  Ivan Borzenets
    (Duke University)

  Gleb Finkelstein
    (Duke University)

We have formed superconducting metal contacts to graphene, resulting in supercurrent through graphene visible up to several degrees Kelvin. In our geometry, graphene bridges a gap between two closely spaced superconducting wires. We have found that passing a current along the length of one of the wires periodically modulates the magnitude of the supercurrent through graphene. We discuss the origins of the observed interference patterns

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