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Phys. Rev. B 66, 165411 (2002) [4 pages]

Andreev current in finite-size carbon nanotubes

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Smitha Vishveshwara1, Cristina Bena1, Leon Balents1, and Matthew P. A. Fisher2
1Department of Physics, University of California, Santa Barbara, California 93106
2Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030

Received 22 June 2002; published 23 October 2002

We investigate the effect of interactions on Andreev current at a normal-superconductor junction when the normal phase is a Luttinger liquid with repulsive interactions. In particular, we study the system of a finite-size carbon nanotube placed between one metallic and one superconducting lead. We show that interactions and finite-size effects give rise to significant deviations from the standard picture of Andreev current at a normal-superconductor junction in the nearly perfect Andreev limit.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.66.165411
DOI:
10.1103/PhysRevB.66.165411
PACS:
73.63.Fg, 71.10.Pm, 74.80.Fp