Spin-polarized tunneling and spin injection in superconductor-ferromagnet junctions

Authors
Maekawa, S Takahashi, S Imamura, H
Citation
S. Maekawa et al., Spin-polarized tunneling and spin injection in superconductor-ferromagnet junctions, MAT SCI E B, 84(1-2), 2001, pp. 44-48
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
84
Issue
1-2
Year of publication
2001
Pages
44 - 48
Database
ISI
SICI code
0921-5107(20010705)84:1-2<44:STASII>2.0.ZU;2-7
Abstract
We present non-equilibrium phenomena in ferromagnet/superconductor/ferromag net tunnel junctions. In the junctions, spin polarization induced by the sp in-polarized tunneling competes with the superconductivity. As a result, a variety of non-linear superconducting and magnetoresistive phenomena are ex pected. The superconducting critical current observed experimentally in fer romagnetic manganite/high-T-c superconductor tunnel junctions is analyzed. We also discuss the spin current backflow accompanied by the Josephson curr ent caused by the spin injection. (C) 2001 Elsevier Science B.V. All lights reserved.