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Z. Naturforsch. 69a, 360 – 370
(2014)
doi:10.5560/ZNA.2014-0026
A Short Review on the Magnetic Effects Occurring at Organic Ferromagnetic Interfaces Formed between Benzene-Like Molecules and Graphene with Ferromagnetic Surfaces
1 Peter Grünberg Institut (PGI-1) and Institute of Advanced Simulation (IAS-1), Forschungszentrum Jülich and JARA, 52425 Jülich, Germany
2 Rudjer Boskovic Institut, Zagreb 10000, Croatia
Received January 15, 2014 / revised February 28, 2014 / published online July 15, 2014
Reprint requests to: N. A.; E-mail:
n.atodiresei@fz-juelich.de
In this article, we briefly summarize our results gained from recent density functional theory simulations aimed to investigate the interaction between organic materials containing π-electrons (i. e., several benzene-like molecules and graphene) with ferromagnetic surfaces. We show how the strong hybridization between the pz-electrons that initially form the π molecular orbitals with the magnetic d-states of the metal influences the spin polarization, the magnetic exchange coupling, and the magnetization direction at hybrid organic–ferromagnetic interface. From a practical perspective, these properties play a very important role for device applications based on organic materials and magnetic surfaces.
Key words: Density Functional Theory; Ab Initio Studies; Molecular Electronics; Molecular Spintronics; Spin-Polarization; Magnetic Exchange Coupling; Hybrid Interface; Bonding Mechanism.