Unveiling the stacking-dependent electronic properties of the 2D ultrathin rare-earth metalloxenes family LnX₂ (Ln = Eu, Gd, Dy; X = Ge, Si)

Abstract

The studies of electronic effects in reduced dimensionality have become a frontier in nanoscience due to exotic and highly tunable character of quantum phenomena. Recently, a new class of 2D...

A Rare Earth Modified Silicon Surface as a Template for Ordered Organic Growth

“…It is characterized by an atomic terbium layer covered by a buckled silicon bilayer, resulting in a TbSi 2 stoichiometry. It should be noted that most trivalent rare earths form very similar silicide monolayers on Si(111), exhibiting very interesting physical properties such as flat-band conditions on n -type silicon , or two-dimensional ferromagnetism. , In a recent theoretical work it was found that the electronic states around the Fermi energy are mostly located around the rare earth atoms and not at the silicide surface, so that dangling bonds should not be present. Thus, it may already be assumed that the reactivity of the silicide surface with adsorbed molecules is sufficiently low enabling an ordered molecular growth.…”