Interaction of yttrium atoms with a C60 fullerite film
2020
Abstract Using scanning tunneling microscopy (STM) observation, interaction of yttrium (Y) atoms with the C60 fullerite films has been studied. It has been found that adsorbed Y atoms avoid clustering and are incorporated in the C60 film as individual atoms occupying the octahedral voids of the fullerite crystal. As a result of a charge transfer from the Y atom, the three neighboring surface fullerenes look more bright in the filled-state STM images. Yttrium atoms are tightly bound in their sites and neither move laterally nor float to the film surface upon subsequent overgrowth of C60 layers.
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