Material-specific spin filtering in ferromagnet/superconductor ballistic nanojunctions

F. Taddei; S. Sanvito; C. J. Lambert

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arXiv · cond-mat/0012352

Material-specific spin filtering in ferromagnet/superconductor ballistic nanojunctions

F. Taddei·S. Sanvito·C. J. Lambert

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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.

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F. Taddei, S. Sanvito, C. J. Lambert. 2000-12-19. Material-specific spin filtering in ferromagnet/superconductor ballistic nanojunctions. https://arxiv.org/abs/cond-mat/0012352

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