Design of the Local Spin Polarization at the Organic-Ferromagnetic Interface

Atodiresei, N.; Lazic, P.; Wiesendanger, R.; Blügel, S.; Caciuc, V.; Hoffmann, G.; Brede, J.

doi:10.1103/PhysRevLett.105.066601

Journal Article

Design of the Local Spin Polarization at the Organic-Ferromagnetic Interface

Atodiresei, N.FZJ* ; Brede, J. ; Lazic, P. ; Caciuc, V.FZJ* ; Hoffmann, G. ; Wiesendanger, R. ; Blügel, S.FZJ*

2010
APS College Park, Md.

Physical review letters 105, 066601 (2010) [10.1103/PhysRevLett.105.066601]

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Please use a persistent id in citations: http://hdl.handle.net/2128/7247 doi:10.1103/PhysRevLett.105.066601

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 pi(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.

Keyword(s): J

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Physics, Multidisciplinary

Note: This work is funded by the DFG (SPP1243, SFB 668-A5 and GrK 611) and Alexander von Humboldt Foundation. The computations were performed on JUROPA and JUGENE supercomputers at the Julich Supercomputing Centre, Forschungszentrum Julich (Germany).

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