Abstract:
A simple model of the density of states of EuX is proposed, taking into account the p bands of the X atoms, the 4$f$ and 6$s$ bands of the Eu atoms. Within the framework of this model, the influence of the substrate on the single-layer graphene is determined: it turned out that the 2$p$ band of X plays the main role. Analytical expressions are obtained for the charge transfer between graphene and europium chalcogenide and the magnetization of graphene induced by the Zeeman exchange field of europium atoms.
Keywords:adsorption approach, broadening and shift of graphene electron states, charge transfer, magnetization of graphene.
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