Defect sites on oxide surfaces play a dominant role in surface chemistry. The direct atomistic study of these sites is important but very difficult. We have mimicked the adsorbate defect interaction by a dynamic force microscope tip measuring the interaction with a color center (F-0) on the MgO(001) surface. The experimental findings, complemented by density functional theory calculations, show a highly attractive adsorbate defect interaction and a charge transfer at a critical distance.
König, T., Simon, G., MARTINEZ POZZONI, U., Giordano, L., Pacchioni, G., Heyde, M., et al. (2010). Direct Measurement of the Attractive Interaction Forces on F-0 Color Centers on MgO(001) by Dynamic Force Microscopy. ACS NANO, 4(5), 2510-2514 [10.1021/nn100443n].
Direct Measurement of the Attractive Interaction Forces on F-0 Color Centers on MgO(001) by Dynamic Force Microscopy
MARTINEZ POZZONI, UMBERTO LUIGI;GIORDANO, LIVIA;PACCHIONI, GIANFRANCO;
2010
Abstract
Defect sites on oxide surfaces play a dominant role in surface chemistry. The direct atomistic study of these sites is important but very difficult. We have mimicked the adsorbate defect interaction by a dynamic force microscope tip measuring the interaction with a color center (F-0) on the MgO(001) surface. The experimental findings, complemented by density functional theory calculations, show a highly attractive adsorbate defect interaction and a charge transfer at a critical distance.
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