2020/12/20 by Aparajita Singha, Singha, Aparajita, Daria Sostina +29
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Machine Learning in Materials Science #Magnetic properties of thin films #Magnetism in coordination complexes #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
paper · pdf · doi:10.48550/arxiv.2012.10972
openalex publication_date 2020/12/20 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
Lanthanide atoms and molecules are promising candidates for atomic data\nstorage and quantum logic due to the long magnetic lifetime of their electron\nquantum states. Accessing these states through electrical transport requires\nthe engineering of their electronic configuration down to the level of\nindividual atomic orbitals. Here, we address the magnetism of surface-supported\nlanthanide atoms, clusters, and films with orbital selectivity using X-ray\nabsorption spectroscopy and magnetic circular dichroism. We exploit the\nselection rules of electric dipole transitions to reveal the occupation and\nmagnetism of the valence electrons of Gd and Ho deposited on MgO/Ag(100).\nComparing our results with multiplet calculations and density functional\ntheory, we identify a charge transfer mechanism that leaves the lanthanide\nspecies in an unconventional singly ionized configuration. Our approach allows\ndetermining the role of valence electrons on the quantum level structure of\nlanthanide-based nanostructures.\n