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.
- Borzenets, IV; Coskun, UC; Jones, SJ; Finkelstein, G
- September 2011
Volume / Issue
- 107 / 13
Start / End Page
- 137005 -
Electronic International Standard Serial Number (EISSN)
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)