Band bending in Mg-colored and O₂-activated ultrathin MgO(001) films
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Jaouen, Thomas
Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
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Hildebrand, Baptiste
Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
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Aebi, Philipp
Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
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Delhaye, G.
Département Matériaux et Nanosciences, Institut de Physique de Rennes, Université de Rennes, France
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Tricot, S.
Département Matériaux et Nanosciences, Institut de Physique de Rennes, Université de Rennes, France
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Lépine, B.
Département Matériaux et Nanosciences, Institut de Physique de Rennes, Université de Rennes, France
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Jézéquel, G.
Département Matériaux et Nanosciences, Institut de Physique de Rennes, Université de Rennes, France
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Schieffer, P.
Département Matériaux et Nanosciences, Institut de Physique de Rennes, Université de Rennes, France
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Published in:
- The Journal of Physical Chemistry C. - 2017, vol. 121, no. 8, p. 4363–4367
English
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.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/305577
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