Abstract
We experimentally investigated electrical transport in thin graphite films about 10 nm thick connected to superconducting leads. Proximity-induced superconductivity was observed and the critical supercurrent strongly depends on the gate voltage. From the maximum-to-minimum ratios of the critical supercurrent and the normal state resistance, we conclude that the major part of the supercurrent flows in a few graphene layers close to the gate electrode.
Original language | English |
---|---|
Pages (from-to) | 1495-1497 |
Number of pages | 3 |
Journal | Physica E: Low-Dimensional Systems and Nanostructures |
Volume | 40 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2008 Mar |
Externally published | Yes |
Keywords
- Graphene
- Graphite
- Proximity effect
- Superconductivity
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics