RT Journal Article
T1 Spin polarized current and Andreev transmission in planar superconducting/ferromagnetic Nb/Ni junctions
A1 González Herrera, Elvira María
A1 Folgueras, A. D.
A1 Escudero, R.
A1 Ferrer, J.M.
A1 Guinea, F.
A1 Vicent López, José Luis
AB We have measured the tunnelling current in Nb/Nb_xO_y/Ni planar tunnel junctions at different temperatures. The junctions are in the intermediate transparency regime. We have extracted the current polarization of the metal/ferromagnet junction without applying a magnetic field. We have used a simple theoretical model, that provides consistent fitting parameters for the whole range of temperatures analysed. We have also been able to gain insight into the microscopic structure of the oxide barriers of our junctions.
PB IOP Publishing
SN 1367-2630
YR 2007
FD 2007-02-21
LK https://hdl.handle.net/20.500.14352/52072
UL https://hdl.handle.net/20.500.14352/52072
LA eng
NO © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.We thank very useful discussions with J Moodera, M Eschrig and M Fogelstrom. This study was supported by MEC (FIS2005-0739, NAN2004-09087, MAT2005-23924E, MAT2002-0495-C02-01, BFM2003-03156), CAM (S-0505/ESP/0337) and Santander-UCM. Additionally, RE thanks Universidad Complutense and Ministerio de Educación y Ciencia for a sabbatical professorship. AD-F thanks Ministerio de Educación y Ciencia for a FPU grant (AP2002-1383).
NO MEC
NO Comunidad de Madrid
NO Santander-UCM
NO Ministerio de Educación y Ciencia
DS Docta Complutense
RD 16 may 2024