Abstract
The transformation of the Auger electron spectra of ytterbium nanofilms as a result of chemisorption of CO and O2 molecules on their surface has been studied. It has been shown that the adsorption of these molecules is accompanied by a radical transformation of the electronic structure of nanofilms, during which the 5d level of ytterbium drops below the Fermi level. As a consequence, one electron can transfer from the 4f level to the 5d level. In turn, this provides the conditions for a giant resonance 4d → 4f and a subsequent Coster-Kronig supertransition 4d 94f 14 → 4d 104f 12 + Auger electron, which is accompanied by emission of one 4f electron to vacuum. The results obtained have demonstrated that molecules chemisorbed on the surface of nanofilms can cause qualitative changes in the properties of the surface and in the bulk of these films. It is obvious that this offers a means for designing nanoobjects with controlled properties.
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Original Russian Text © M.V. Kuz’min, M.A. Mittsev, 2011, published in Fizika Tverdogo Tela, 2011, Vol. 53, No. 3, pp. 569–572.
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Kuz’min, M.V., Mittsev, M.A. Transformation of auger electron spectra of ytterbium nanofilms under the action of adsorbed carbon monoxide and oxygen molecules. Phys. Solid State 53, 612–615 (2011). https://doi.org/10.1134/S1063783411030152
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DOI: https://doi.org/10.1134/S1063783411030152