Radical-Induced Changes in Transition Metal Interfacial Magnetic Properties: A Blatter Derivative on Polycrystalline Cobalt
arxiv(2024)
摘要
In this work, we study the cobalt radical interface obtained by depositing a
monolayer of a derivative of the Blatter radical on polycrystalline cobalt. By
examining the occupied and unoccupied states at the interface, using soft X-ray
techniques, and combining them with ab initio calculations, we can completely
determine the electronic structure at the interface, simultaneously, on both
the molecular and ferromagnetic sides, and thus obtain a full understanding of
the magnetic properties at the interface. We find that the molecule is strongly
hybridized with the surface. Changes in the core level spectra reflect the
modification of the molecule and cobalt electronic structure induced by the
bonding across the interface. This causes a decrease in the magnetic moments of
the cobalt atoms bonded to the molecules that lose their radical character. Our
method allows screening, beforehand, the organic ferromagnetic interfaces in
view of potential applications in spintronic.
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