Phase diffusion in graphene-based Josephson junctions.

Journal Article (Journal Article)

We report on graphene-based Josephson junctions with contacts made from lead. The high transition temperature of this superconductor allows us to observe the supercurrent branch at temperatures up to ∼2 K, at which point we can detect a small, but nonzero, resistance. We attribute this resistance to the phase diffusion mechanism, which has not been yet identified in graphene. By measuring the resistance as a function of temperature and gate voltage, we can further characterize the nature of the electromagnetic environment and dissipation in our samples.

Full Text

Duke Authors

Finkelstein, Gleb

Cited Authors

Borzenets, IV; Coskun, UC; Jones, SJ; Finkelstein, G

Published Date

September 2011

Published In

Physical Review Letters

Volume / Issue

107 / 13

Start / End Page

137005 -

PubMed ID

22026894

Electronic International Standard Serial Number (EISSN)

1079-7114

International Standard Serial Number (ISSN)

0031-9007

Digital Object Identifier (DOI)

10.1103/physrevlett.107.137005

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