Material-specific spin filtering in ferromagnet/superconductor ballistic nanojunctions

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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.
4 pages, 4 figures

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Mesoscale and Nanoscale Physics, Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/17166

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0012352
 http://arxiv.org/abs/cond-mat/0012352

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arXiv