We demonstrate theoretically the possibility to produce a pure spin current in graphene by filtering the charge from a spin-polarized electric current. To achieve this effect, which is based on the recently predicted property of specular Andreev reflection in graphene, we propose two possible device structures containing normal-superconductor (NS) junctions.
@article{arxiv.cond-mat/0610750,
title = {Pure spin current in graphene NS structures},
author = {D. Greenbaum and S. Das and G. Schwiete and P. G. Silvestrov},
journal= {arXiv preprint arXiv:cond-mat/0610750},
year = {2007}
}