Negative four-terminal resistance as a probe of crossed Andreev reflection
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
We report on the experimental investigation of electronic transport in superconductor-ferromagnet spin-valve structures. Our samples consist of two ferromagnetic iron leads forming planar tunnel contacts to a superconducting aluminum wire. At energies below the superconducting gap, we observe a negative four-probe resistance that can be explained by crossed Andreev reflection.
Keywords
Cite
@article{arxiv.cond-mat/0609766,
title = {Negative four-terminal resistance as a probe of crossed Andreev reflection},
author = {D. Beckmann H. v. Löhneysen},
journal= {arXiv preprint arXiv:cond-mat/0609766},
year = {2007}
}
Comments
4 pages, 5 figures, revtex