The coordination of lanthanides atoms in two-dimensional surface-confined metal-organic networks is a promising path to achieve an ordered array of single atom magnets. These networks are highly versatile with plenty of combinations of molecular linkers and metallic atoms. Notably, with an appropriate choice of molecules and lanthanide atoms it should be feasible to tailor the orientation and intensity of the magnetic anisotropy. However, up to now only tilted and almost in-plane easy axis of magnetizations were reported in lanthanide-based architectures. Here we introduce an Er-directed two-dimensional metallosupramolecular network on Cu(111) featuring strong out-of-plane magnetic anisotropy. Our results will contribute to pave avenues for the use of lanthanides in potential applications in nanomagnetism and spintronics.

ALBA Synchrotron Light Source Cerdanyola del Vallès 08290 Spain

Brno University of Technology 601 90 Czech Republic

Departamento de Física de la Materia Condensada and Condensed Matter Physics Center Universidad Autónoma de Madrid Madrid 28049 Spain

Instituto de Ciencia de Materiales de Madrid Cantoblanco Madrid 28049 Spain

Instituto Madrileño de Estudios Avanzados en Nanociencia Madrid 28049 Spain

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