Material-specific spin filtering in ferromagnet/superconductor ballistic nanojunctions
Mesoscale and Nanoscale Physics
2007-05-23 v1 Superconductivity
Abstract
We study spin-dependent electronic transport across ferromagnet/superconductor ballistic junctions modeled using tight-binding Hamiltonians with s, p and d orbitals and material-specific parameters. We show that by accurately modeling the band structure of the bulk materials, one can reproduce the measured differential conductance of Cu/Pb nanocontacts. In contrast the differential conductance of Co/Pb contacts can only be reproduced if an enhanced magnetic moment is present at the interface.
Cite
@article{arxiv.cond-mat/0012352,
title = {Material-specific spin filtering in ferromagnet/superconductor ballistic nanojunctions},
author = {F. Taddei and S. Sanvito and C. J. Lambert},
journal= {arXiv preprint arXiv:cond-mat/0012352},
year = {2007}
}
Comments
4 pages, 4 figures