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- W2681897025 abstract "The electronic and chemical properties of Ag clusters on MgO(100) films grown on Mo(100) were studied using metastable impact electron and ultraviolet photoelectron spectroscopies (MIES/UPS) and temperature programmed desorption (TPD). The work function of the as-grown and vacuum-annealed MgO(100) surfaces increases monotonically with increasing Ag coverage. In contrast, an initial decrease of the work function upon Ag deposition was found for the sputter-damaged MgO(100) surface, implying that small Ag clusters on this surface are electron deficient. Point defects with high electron affinities, such as F2+ and/or V/V- centers, created by sputtering are believed to be responsible for the initial decrease of the work function upon Ag deposition. For low Ag coverages, the quantity of CO adsorbed at 80 K on a sputter-damaged MgO(100) surface is much greater than that adsorbed for a comparable Ag coverage on a relatively smooth, MgO(100) surface. These results are consistent with point defects on MgO(100) being responsible for altering the electronic and chemical properties of supported Ag clusters." @default.
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- W2681897025 date "2002-06-18" @default.
- W2681897025 modified "2023-10-12" @default.
- W2681897025 title "Interaction of Ag with MgO(100)" @default.
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- W2681897025 doi "https://doi.org/10.1021/jp0205766" @default.
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