Jaouen, Thomas Hildebrand, Baptiste Aebi, Philipp Delhaye, G. Tricot, S. Lépine, B. Jézéquel, G. Schieffer, P. 2017-03-02 Ultrathin MgO films grown on Ag(001) have been investigated using X-ray and ultraviolet photoemission spectroscopies for oxide films successively exposed to Mg and O₂ flux. Studying work functions and layer-resolved Auger shifts allows us to keep track of band profiles from the oxide surface to the interface and reveal the charge- transfer mechanisms underlying the controlled creation of Mg-induced surface color centers and the catalytic enhancement of O₂ activation. Our results demonstrate that one can intimately probe the catalytic properties of metal-supported ultrathin oxide films by studying the electronic band alignment at interfaces. application/pdf https://folia.unifr.ch/global/documents/305577 https://folia.unifr.ch/documents/305577/files/aeb_bbm.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcc.6b12541 info:eu-repo/semantics/openAccess License undefined The Journal of Physical Chemistry C. - 2017, vol. 121, no. 8, p. 4363–4367 info:eu-repo/classification/udc/53 Band bending in Mg-colored and O₂-activated ultrathin MgO(001) films http://purl.org/coar/resource_type/c_6501