Nonlocal Andreev reflection at high transmissions
Superconductivity
2007-06-13 v2
Abstract
We analyze non-local effects in electron transport across three-terminal normal-superconducting-normal (NSN) structures. Subgap electrons entering S-electrode from one N-metal may form Cooper pairs with their counterparts penetrating from another N-metal. This phenomenon of crossed Andreev reflection -- combined with normal scattering at SN interfaces -- yields two different contributions to non-local conductance which we evaluate non-perturbatively at arbitrary interface transmissions. Both these contributions reach their maximum values at fully transmitting interfaces and demonstrate interesting features which can be tested in future experiments.
Cite
@article{arxiv.cond-mat/0611330,
title = {Nonlocal Andreev reflection at high transmissions},
author = {Mikhail S. Kalenkov and Andrei D. Zaikin},
journal= {arXiv preprint arXiv:cond-mat/0611330},
year = {2007}
}
Comments
4 pages, 4 figures