Multiple Andreev Reflections in a Carbon Nanotube Quantum Dot

M. R. Buitelaar, W. Belzig, T. Nussbaumer, B. Babić, C. Bruder, and C. Schönenberger
Phys. Rev. Lett. 91, 057005 – Published 1 August 2003

Abstract

We report resonant multiple Andreev reflections in a multiwall carbon nanotube quantum dot coupled to superconducting leads. The position and magnitude of the subharmonic gap structure is found to depend strongly on the level positions of the single-electron states which are adjusted with a gate electrode. We discuss a theoretical model of the device and compare the calculated differential conductance with the experimental data.

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  • Received 9 April 2003

DOI:https://doi.org/10.1103/PhysRevLett.91.057005

©2003 American Physical Society

Authors & Affiliations

M. R. Buitelaar*, W. Belzig, T. Nussbaumer, B. Babić, C. Bruder, and C. Schönenberger

  • Institut für Physik, Universität Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

  • *Present address: Cavendish Laboratory, Cambridge, UK.

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Issue

Vol. 91, Iss. 5 — 1 August 2003

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