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arXiv · 1104.3130

Microscopic theory of Cooper pair beam splitters based on carbon nanotubes

P. Burset·W. J. Herrera·A. Levy Yeyati
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Abstract

We analyze microscopically a Cooper pair splitting device in which a central superconducting lead is connected to two weakly coupled normal leads through a carbon nanotube. We determine the splitting efficiency at resonance in terms of geometrical and material parameters, including the effect of spin-orbit scattering. While the efficiency in the linear regime is limited to 50% and decay exponentially as a function of the width of the superconducting region we show that it can rise up to $\sim 100%$ in the non-linear regime for certain regions of the stability diagram.

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P. Burset, W. J. Herrera, A. Levy Yeyati. 2011-04-15. Microscopic theory of Cooper pair beam splitters based on carbon nanotubes. https://doi.org/10.1103/physrevb.84.115448

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