title: Design of the local spin polarization at the organic-ferromagnetic interface.
abstract: By means of ab initio calculations and spin-polarized scanning tunneling microscopy experiments the creation of a complex energy dependent magnetic structure with a tailored spin-polarized interface is demonstrated. We show this novel effect by adsorbing organic molecules containing π(p(z)) electrons onto a magnetic surface. The hybridization of the out-of-plane p(z) atomic-type orbitals with the d states of the metal leads to the inversion of the spin polarization at the organic site due to a p(z)-d Zener exchange-type mechanism. As a key result, we demonstrate the possibility to selectively and efficiently inject spin-up and spin-down electrons from a ferromagnetic-organic interface, an effect which can be exploited in future spintronic devices.
authors.affiliation: Institut für Festkörperforschung and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany. n.atodiresei@fz-juelich.de
authors.forename: Nicolae
authors.initials: N
authors.lastname: Atodiresei
authors.forename: Jens
authors.initials: J
authors.lastname: Brede
authors.forename: Predrag
authors.initials: P
authors.lastname: Lazić
authors.forename: Vasile
authors.initials: V
authors.lastname: Caciuc
authors.forename: Germar
authors.initials: G
authors.lastname: Hoffmann
authors.forename: Roland
authors.initials: R
authors.lastname: Wiesendanger
authors.forename: Stefan
authors.initials: S
authors.lastname: Blügel