Lancaster EPrints

Spin-polarized transport in F/S nanojunctions

Taddei, F and Sanvito, S and Lambert, C. J. (2001) Spin-polarized transport in F/S nanojunctions. Journal of Low Temperature Physics, 124 (1-2). pp. 305-320. ISSN 0022-2291

Full text not available from this repository.

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. The first result of this paper is that, by accurately modeling the band structure of the bulk materials, one can reproduce the measured differential conductance of Cu/Pb nanocontacts(1,2). In contrast the differential conductance of Co/Pb contacts can only be reproduced if an enhanced magnetic moment is present at the interface. The second result concerns the reliability of a method proposed in Refs. 1-3 for determining the degree of polarization of a ferromagnet. By fitting the material-specific differential conductance curves to curves calculated using a single-band model we show that this method does not yield reliable values for polarization and spin-dependent transmission.

Item Type: Article
Journal or Publication Title: Journal of Low Temperature Physics
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 577
Deposited By: Prof Colin J. Lambert
Deposited On: 04 Jul 2007
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 22:08
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/577

Actions (login required)

View Item