Abstract
We present the first experimental determination of the intra-atomic exchange energy between the inner 4f and the outer 6s5d shells in rare-earth elements. Inelastic electron tunneling spectroscopy ...
Highlights
Magnetic systems represent one of the fastest-moving frontiers in solid-state physics and materials science
We carried out Scanning tunneling microscopy (STM) and inelastic electron tunneling spectroscopy (IETS) measurements on RE adatoms on graphene grown on both Ir(111) and polycrystalline Cu; see Fig. 1(a)
For six of them (Sm, Eu, Dy, Ho, Er, and Tm), we observe prominent inelastic excitations at energy ÆEex that depend on the RE element, while no inelastic features are observed for La and Yb
Summary
Magnetic systems represent one of the fastest-moving frontiers in solid-state physics and materials science. Measuring the Intra-Atomic Exchange Energy in Rare-Earth Adatoms Inelastic electron tunneling spectroscopy on individual rare-earth atoms adsorbed on metal-supported graphene reveals an element-dependent excitation, with energy between 30 and 170 meV, linearly increasing with the spin angular momentum of the 4f shell.
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