Carbon Nanotube Quantum Dots with Nb Contacts

Emiliano Pallecchi; Markus Gaass; Dmitry Ryndyk; Christoph Strunk

doi:10.1063/1.2971034

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arXiv · 0804.0168

Carbon Nanotube Quantum Dots with Nb Contacts

Emiliano Pallecchi·Markus Gaass·Dmitry Ryndyk·Christoph Strunk

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Abstract

We report on the preparation of carbon nanotube quantum dots 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 in order to increase the switching current.

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Emiliano Pallecchi, Markus Gaass, Dmitry Ryndyk, Christoph Strunk. 2008-09-17. Carbon Nanotube Quantum Dots with Nb Contacts. https://doi.org/10.1063/1.2971034

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