Kondo resonance enhanced supercurrent in single wall carbon nanotube Josephson junctions

Kondo resonance enhanced supercurrent in single wall carbon nanotube Josephson junctions

We have contacted single wall carbon nanotubes grown by chemical vapor deposition to super-conducting Ti/Al/Ti electrodes. The device, we here report on is in the Kondo regime exhibiting a four-fold shell structure, where a clear signature of the superconducting electrodes is observed below the critical temperature. Multiple Andreev reflections are revealed by sub-gap structure and a narrow pea...

Carbon nanotube Josephson junctions with Nb contacts

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...

Fluxon bunching in supercurrent-coupled Josephson junctions.

Transport properties of single-wall carbon nanotube Y junctions

Antonis N. Andriotis,*Madhu Menon, Deepak Srivastava, and Leonid Chernozatonskii Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 1527, 71110 Heraklio, Crete, Greece Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 Center for Computational Sciences, University of Kentucky, Lexington, Kentucky 40506-00...

Formation pathways for single-wall carbon nanotube multiterminal junctions

Using tight-binding as well as classical molecular dynamics we simulate the formation of single-wall carbon nanotube T-, Yand X-junctions via the fusing of two nanotubes. We propose energetically efficient pathways for this process in which all atoms maintain their sp2 arrangements throughout. Recent experimental advances have greatly increased the plausibility of synthesizing multiterminal jun...