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Resonant Andreev reflections in superconductor-carbon-nanotube devices

Yadong Wei·Jian Wang·Hong Guo·Hatem Mehrez·R. Roland
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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 high transparency devices on-resonance, 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 Andreev reflection process.

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Yadong Wei, Jian Wang, Hong Guo, Hatem Mehrez, R. Roland. 2001-03-09. Resonant Andreev reflections in superconductor-carbon-nanotube devices. https://doi.org/10.1103/physrevb.63.195412

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