Electron transport in single wall carbon nanotube weak links in the Fabry-Perot regime

Abstract

We fabricated reproducible high transparency superconducting contacts consisting of superconducting Ti/Al/Ti trilayers to gated single-walled carbon nanotubes (SWCNTs). The reported semiconducting SWCNT have normal state differential conductance up to $3e^2/h$ and exhibit clear Fabry-Perot interference patterns in the bias spectroscopy plot. We observed subharmonic gap structure in the differential conductance and a distinct peak in the conductance at zero bias which is interpreted as a manifestation of a supercurrent. The gate dependence of this supercurrent as well as the excess current are examined and compared to a coherent theory of superconducting point contacts with good agreement.

arXiv comment10 pages, 4 figures

References in corpus (13)

• Kondo physics in carbon nanotubes
• Hamiltonian approach to the transport properties of superconducting quantum point contacts
• Quantum supercurrent transistors in carbon nanotubes
• A Quantum Dot in the Kondo Regime Coupled to Superconductors
• Electron-hole symmetry in a semiconducting carbon nanotube quantum dot
• Multiple Andreev Reflections in a Carbon Nanotube Quantum Dot
• Shell filling in closed single-wall carbon nanotube quantum dots
• The Aharonov-Bohm Interference and Beating in Single-Walled Carbon Nanotube Interferometers
• On the Kondo effect in carbon nanotubes at half halfing
• Scattering theory of superconductive tunneling in quantum junctions
• DC-transport in superconducting point contacts: a full counting statistics view
• Conductance properties of nanotubes coupled to superconducting leads: signatures of Andreev states dynamics
• General transport properties of superconducting quantum point contacts: a Green functions approach

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