title: Spin manipulation in Co-doped ZnO.
abstract: We report the clearly observed tunneling magnetoresistance at 5 K in magnetic tunnel junctions with Co-doped ZnO as a bottom ferromagnetic electrode and Co as a top ferromagnetic electrode prepared by pulsed laser deposition. Spin-polarized electrons were injected from Co-doped ZnO to the crystallized Al2O3 and tunnelled through the amorphous Al2O3 barrier. Our studies demonstrate the spin polarization in Co-doped ZnO and its possible application in future ZnO-based spintronics devices.
authors.affiliation: Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Dresden-Rossendorf e.V., Bautzner Landstrasse 128, 01328 Dresden, Germany. xuqingyu_1974@yahoo.com
authors.forename: Qingyu
authors.initials: Q
authors.lastname: Xu
authors.forename: Lars
authors.initials: L
authors.lastname: Hartmann
authors.forename: Shengqiang
authors.initials: S
authors.lastname: Zhou
authors.forename: Arndt
authors.initials: A
authors.lastname: Mcklich
authors.forename: Manfred
authors.initials: M
authors.lastname: Helm
authors.forename: Gisela
authors.initials: G
authors.lastname: Biehne
authors.forename: Holger
authors.initials: H
authors.lastname: Hochmuth
authors.forename: Michael
authors.initials: M
authors.lastname: Lorenz
authors.forename: Marius
authors.initials: M
authors.lastname: Grundmann
authors.forename: Heidemarie
authors.initials: H
authors.lastname: Schmidt