A short review on the magnetic effects occurring at organic ferromagnetic interfaces formed between benzene-like molecules and graphene with ferromagnetic surfaces

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. (orig.)