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arXiv · 1502.03227

Excited States at Interfaces of a Metal-Supported Ultrathin Oxide Film

T. Jaouen·E. Razzoli·C. Didiot·G. Monney·B. Hildebrand·F. Vanini·M. Muntwiler·P. Aebi
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Abstract

We report layer-resolved measurements of the \textit{unoccupied} electronic structure of ultrathin MgO films grown on Ag(001). The metal-induced gap states at the metal/oxide interface, the oxide band gap as well as a surface core exciton involving an image-potential state of the vacuum are revealed through resonant Auger spectroscopy of the Mg $KL_{23}L_{23}$ Auger transition. Our results demonstrate how to obtain new insights on \textit{empty} states at interfaces of metal-supported ultrathin oxide films.

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T. Jaouen, E. Razzoli, C. Didiot, G. Monney, B. Hildebrand, F. Vanini, M. Muntwiler, P. Aebi. 2015-04-27. Excited States at Interfaces of a Metal-Supported Ultrathin Oxide Film. https://doi.org/10.1103/physrevb.91.161410

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