Tsuneta, T. and Lechner, L. and Hakonen, P. J. (2007) Gate-controlled superconductivity in a diffusive multiwalled carbon nanotube. PHYSICAL REVIEW LETTERS, 98 (8): 087002. ISSN 0031-9007,
Full text not available from this repository.Abstract
We have investigated electrical transport in a diffusive multiwalled carbon nanotube contacted using superconducting leads made of an Al/Ti sandwich structure. We find proximity-induced superconductivity with measured critical currents up to I-cm=1.3 nA, tunable by the gate voltage down to 10 pA. The supercurrent branch displays a finite zero bias resistance which varies as R-0 proportional to I-cm(-alpha) with alpha=0.74. Using IV characteristics of junctions with phase diffusion, a good agreement is obtained with the Josephson coupling energy in the long, diffusive junction model of A. D. Zaikin and G. F. Zharkov.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ENERGY-GAP STRUCTURE; JOSEPHSON-JUNCTIONS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Dec 2020 09:47 |
| Last Modified: | 22 Dec 2020 09:47 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33173 |
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