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Z. Naturforsch. 69a, 297 – 302
(2014)
doi:10.5560/ZNA.2014-0012
Electronic and Magnetic Properties of the Graphene/Eu/Ni(111) Hybrid System
1 Humboldt-Universität zu Berlin, Institut für Chemie, 10099 Berlin, Germany
2 SPECS Surface Nano Analysis GmbH, Voltastraße 5, 13355 Berlin, Germany
Received December 30, 2013 / revised January 6, 2014 / published online July 15, 2014
Reprint requests to: E. N. V.; E-mail:
elena.voloshina@hu-berlin.de
The electronic and magnetic properties of the graphene/Eu/Ni(111) intercalation-like system are studied in the framework of the general gradient approximation with the effective Coulomb potential (GGA+U) and dispersive interactions taken into account. Intercalation of monoatomic europium layer underneath graphene on Ni(111) leads to the drastic changes of the electronic structure of graphene compared to free-standing graphene as well as graphene/Ni(111). The strong influence of the spin-polarized europium 4f states, crossing the graphene-derived π states, on magnetic properties of graphene and on spin-filtering properties of the graphene/Eu/Ni(111) trilayer is discussed.
Key words: Graphene–Metal Interfaces; Density Functional Theory; Electronic Structure of Graphene.