Phase diffusion in graphene-based Josephson junctions.

Published

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

Cited Authors

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

Published Date

  • September 21, 2011

Published In

Volume / Issue

  • 107 / 13

Start / End Page

  • 137005 -

PubMed ID

  • 22026894

Pubmed Central 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

Language

  • eng