Resonant Andreev reflections in superconductor–carbon-nanotube devices

Yadong Wei, Jian Wang, Hong Guo, Hatem Mehrez, and Christopher Roland
Phys. Rev. B 63, 195412 – Published 25 April 2001
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Abstract

Resonant Andreev reflection through superconductor-carbon-nanotube devices was investigated theoretically with a focus on the superconducting proximity effect. Consistent with a recent experiment, we find that for on-resonance high-transparency devices, the Andreev current is characterized by a large value and a resistance dip; low-transparency off-resonance devices give the opposite result. We also give evidence that the observed low-temperature transport anomaly may be a natural result of the Andreev reflection process.

  • Received 27 November 2000

DOI:https://doi.org/10.1103/PhysRevB.63.195412

©2001 American Physical Society

Authors & Affiliations

Yadong Wei1, Jian Wang1, Hong Guo2, Hatem Mehrez2, and Christopher Roland3

  • 1Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China
  • 2Center for the Physics of Materials and Department of Physics, McGill University, Montreal, PQ, Canada H3A 2T8
  • 3Department of Physics, The North Carolina State University, Raleigh, North Carolina 27695

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Vol. 63, Iss. 19 — 15 May 2001

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