Pallecchi, Emiliano and Gaaß, Markus and Ryndyk, Dmitry and Strunk, Christoph
Carbon nanotube Josephson junctions with Nb contacts.
Applied Physics Letters 93 (7), 072501.
Other URL: http://link.aip.org/link/?APPLAB/93/072501/1
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.