Experimental Evidence for Crossed Andreev Reflection
Mesoscale and Nanoscale Physics
2009-11-11 v1 Superconductivity
Abstract
We report on electronic transport properties of mesoscopic superconductor-ferromagnet spin-valve structures. Two ferromagnetic iron leads form planar tunnel contacts to a superconducting aluminum wire, where the distance of the two contacts is of the order of the coherence length of the aluminum. We observe a negative non-local resistance which can be explained by crossed Andreev reflection, a process where an electron incident from one of the leads gets reflected as a hole into the other, thereby creating a pair of spatially separated, entangled particles.
Cite
@article{arxiv.cond-mat/0512445,
title = {Experimental Evidence for Crossed Andreev Reflection},
author = {D. Beckmann and H. v. Löhneysen},
journal= {arXiv preprint arXiv:cond-mat/0512445},
year = {2009}
}
Comments
LT24 conference proceeding, 2 pages, 2 figures