Controlling supercurrents using single-walled carbon nanotube weak links

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Journal Title
Journal ISSN
Volume Title
School of Science | A4 Artikkeli konferenssijulkaisussa
Date
2009
Major/Subject
Mcode
Degree programme
Language
en
Pages
052282/1-4
Series
Journal of Physics: Conference Series, Volume 150, Issue 5
Abstract
We have investigated proximity-induced supercurrents in single-walled carbon nanotubes. Phase diffusion is found to be present in the maximum measured supercurrent of 4.8 nA, which results in a minimum of 100Ω zero bias resistance in superconducting state. We also observe that the supercurrent is very sensitive to the measurement bandwidth and large phase fluctuations can even destroy the supercurrents. Our results shed light on the methods of how to improve the performance of high frequency superconducting single-walled nanotube devices.
Description
Keywords
SWNTs, supercurrents
Other note
Citation
Wu, F. & Danneau, R. & Queipo, P. & Kauppinen, E. & Tsuneta, T. & Hakonen, Pertti J. 2009. Controlling supercurrents using single-walled carbon nanotube weak links. 25th International Conference on Low Temperature Physics, editors Peter Kes and Reijer Jochemsen. Journal of Physics: Conference Series. Volume 150, Issue 5. 052282/1-4. ISSN 1742-6596 (electronic). ISSN 1742-6588 (printed). DOI: 10.1088/1742-6596/150/5/052282