Interplay of spin accumulation and Coulomb blockade in double ferromagnetic junctions

Authors
Citation
J. Barnas et A. Fert, Interplay of spin accumulation and Coulomb blockade in double ferromagnetic junctions, J MAGN MAGN, 192(3), 1999, pp. L391-L395
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
192
Issue
3
Year of publication
1999
Pages
L391 - L395
Database
ISI
SICI code
0304-8853(199903)192:3<L391:IOSAAC>2.0.ZU;2-9
Abstract
Single-electron tunneling in a double junction in which a nonmagnetic metal lic island is separated from two ferromagnetic electrodes by tunnel barrier s, is analysed theoretically in the sequential tunneling regime and for an arbitrary intrinsic spin relaxation time on the island. It is shown that no nequilibrium spin polarization of the island results in tunnel magnetoresis tance due to rotation of the electrode magnetizations from antiparallel to parallel alignment. It is also shown that discrete charging of the island g ives rise to a fine structure in the voltage dependence of the island spin polarization and tunnel magnetoresistance. (C) 1999 Elsevier Science B.V. A ll rights reserved.