In this work, we investigated the effect of Au-intercalation on the magnetic coupling between a sub-monolayer of Co-Tetraphenylporphyrin molecules and a graphene-covered Ni(111) single crystal. Using x-ray absorption spectroscopy and x-ray magnetic circular dichroism, the element-specific magnetization and its field dependence were probed. Cobalt strongly couples antiferromagnetically to the nickel substrate, also through the graphene layer. The intercalation of graphene with gold leads to a complete removal of this coupling. Published under license by AIP Publishing.
CoTPP molecules deposited on graphene/Ni (111): Quenching of the antiferromagnetic interaction induced by gold intercalation / Corradini, V.; Candini, A.; Klar, D.; Biagi, R.; De Renzi, V.; Lodi Rizzini, A.; Cavani, N.; Del Pennino, U.; Wende, H.; Otero, E.; Affronte, M.. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 125:14(2019), pp. 142904-142904-7. [10.1063/1.5063562]
CoTPP molecules deposited on graphene/Ni (111): Quenching of the antiferromagnetic interaction induced by gold intercalation
Corradini V.;Candini A.;Biagi R.;De Renzi V.;Lodi Rizzini A.;Cavani N.;Del Pennino U.;Affronte M.
2019-01-01
Abstract
In this work, we investigated the effect of Au-intercalation on the magnetic coupling between a sub-monolayer of Co-Tetraphenylporphyrin molecules and a graphene-covered Ni(111) single crystal. Using x-ray absorption spectroscopy and x-ray magnetic circular dichroism, the element-specific magnetization and its field dependence were probed. Cobalt strongly couples antiferromagnetically to the nickel substrate, also through the graphene layer. The intercalation of graphene with gold leads to a complete removal of this coupling. Published under license by AIP Publishing.
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