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Carbon nanotube Josephson junctions with Nb contacts

URN to cite this document:
urn:nbn:de:bvb:355-epub-80387
DOI to cite this document:
10.5283/epub.8038
Pallecchi, Emiliano ; Gaaß, Markus ; Ryndyk, Dmitry ; Strunk, Christoph
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Date of publication of this fulltext: 05 Aug 2009 13:58


Abstract

We report on the preparation of carbon nanotube Josephson junctions using superconducting electrodes made of niobium. Gate-controllable supercurrents with values of up to 30 nA are induced by the proximity effect. The IV curves are hysteretic at low temperature and the corresponding switching histograms have a width of 0.5%–2%. An on-chip resistive environment integrated in the sample layout is used to increase the switching current.


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