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Gate-controlled superconducting proximity effect in ultrathin graphite films

โœ Scribed by T. Sato; T. Moriki; S. Tanaka; A. Kanda; H. Goto; H. Miyazaki; S. Odaka; Y. Ootuka; K. Tsukagoshi; Y. Aoyagi

Book ID
104085130
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
457 KB
Volume
40
Category
Article
ISSN
1386-9477

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โœฆ Synopsis

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.

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Superconducting proximity effect in niob
Superconducting proximity effect in niobium/graphite complex systems
โœ Toshiharu Kubo; Yoshiko F. Ohashi; Takeshi Kinoshita; Takayuki Terai ๐Ÿ“‚ Article ๐Ÿ“… 2007 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 161 KB

In the junction of a superconductor (S) and a normal conductor (N), the superconducting proximity effect arises, and the transition temperature (T c ) and critical field (H c ) of S/N bilayer usually lower from those in the superconductor itself รฐT s c ; H s c รž. However, in the niobium/graphite cor