Uniaxial 2D Superlattice of Fe<sub>4</sub> Molecular Magnets on Graphene.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 29148799.
- Also identified by DOI 10.1021/acs.nanolett.6b05105.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
We demonstrate that electrospray deposition enables the fabrication of highly periodic self-assembled arrays of Fe<sub>4</sub>H single molecule magnets on graphene/Ir(111). The energetic positions of molecular states are probed by means of scanning tunneling spectroscopy, showing pronounced long- and short-ranged spatial modulations, indicating the presence of both locally varying intermolecular as well as adsorption-site dependent molecule-substrate interactions. From the magnetic field dependence of the X-ray magnetic circular dichroism signal, we infer that the magnetic easy axis of each Fe<sub>4</sub>H molecule is oriented perpendicular to the sample surface and that after the deposition the value of the uniaxial anisotropy is identical to the one in bulk. Our findings therefore suggest that the observed interaction of the molecules with their surrounding does not modify the molecular magnetism, resulting in a two-dimensional array of molecular magnets that retain their bulk magnetic properties.