000827875 001__ 827875 000827875 005__ 20230426083142.0 000827875 0247_ $$2doi$$a10.1103/PhysRevB.95.075427 000827875 0247_ $$2ISSN$$a0163-1829 000827875 0247_ $$2ISSN$$a0556-2805 000827875 0247_ $$2ISSN$$a1094-1622 000827875 0247_ $$2ISSN$$a1095-3795 000827875 0247_ $$2ISSN$$a1098-0121 000827875 0247_ $$2ISSN$$a1550-235X 000827875 0247_ $$2ISSN$$a2469-9950 000827875 0247_ $$2ISSN$$a2469-9969 000827875 0247_ $$2Handle$$a2128/13894 000827875 0247_ $$2WOS$$aWOS:000394659700008 000827875 037__ $$aFZJ-2017-01958 000827875 082__ $$a530 000827875 1001_ $$0P:(DE-HGF)0$$aHuttmann, Felix$$b0$$eCorresponding author 000827875 245__ $$aMagnetism in a graphene- 4 f − 3 d hybrid system 000827875 260__ $$aWoodbury, NY$$bInst.$$c2017 000827875 3367_ $$2DRIVER$$aarticle 000827875 3367_ $$2DataCite$$aOutput Types/Journal article 000827875 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1488276885_6794 000827875 3367_ $$2BibTeX$$aARTICLE 000827875 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000827875 3367_ $$00$$2EndNote$$aJournal Article 000827875 520__ $$aWe create an interface of graphene with a metallic and magnetic support that leaves its electronic structure largely intact. This is achieved by exposing epitaxial graphene on ferromagnetic thin films of Co and Ni to vapor of the rare earth metal Eu at elevated temperatures, resulting in the intercalation of an Eu monolayer in between graphene and its substrate. The system is atomically well defined, with the Eu monolayer forming a (√3×√3)R30∘ superstructure with respect to the graphene lattice. Thereby, we avoid the strong hybridization with the (Ni,Co) substrate 3d states that otherwise drastically modify the electronic structure of graphene. This picture is suggested by our x-ray absorption spectroscopy measurements which show that after Eu intercalation the empty 2p states of C atoms resemble more the ones measured for graphite in contrast to graphene directly bound to 3d ferromagnetic substrates. We use x-ray magnetic circular dichroism at the Co and Ni L2,3 and Eu M4,5 as an element-specific probe to investigate magnetism in these systems. An antiferromagnetic coupling between Eu and Co/Ni moments is found, which is so strong that a magnetic moment of the Eu layer can be detected at room temperature. 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