Thickness-dependent electronic structure and interfacial behaviors of iron on faceted MgO(1Â 1Â 1) films

► The electronic structure of Fe on MgO(1 1 1) films with {1 0 0} facets was investigated. ► The chemical interaction at the interface of Fe and MgO films was rather weak. ► A upward band bending of MgO with 1.2 eV was observed.