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Crossover from Three-Dimensional to Two-Dimensional Geometries of Au Nanostructures on Thin MgO(001) Films: A Confirmation of Theoretical Predictions
Open accessAbstract
In this Letter, we report a low-temperature scanning tunneling microscopy study aiming to explore the adsorption properties of Au with respect to the thickness of supported MgO films. For different MgO film thicknesses (3 ML and 8 ML), we find significant differences in the distribution of Au adsorption sites and in the Au cluster geometry, in line with recent calculations and electron paramagnetic resonance experiments. On the surface of thick MgO films or unsupported MgO, Au adsorbs on O sites [Phys. Rev. Lett. 96, 146804 (2006)], and the equilibrium cluster geometry is three-dimensional. In contrast, on thin MgO films, the calculations predicted (i) a change of the preferred Au nucleation site [Phys. Rev. Lett. 94, 226104 (2005)] and (ii) a stabilization of two-dimensional Au cluster geometries [Phys. Rev. Lett. 97, 036106 (2006)].
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Citations
Cited by
Electron Transfer at Oxide Surfaces. The MgO Paradigm: from Defects to Ultrathin Films
Pacchioni, G., & Freund, H. (2013) · Chemical Reviews · doi:10.1021/cr3002017 · Cited by 320
Self-citationElectronic interactions and charge transfers of metal atoms and clusters on oxide surfaces
Pacchioni, G. (2013) · Physical Chemistry Chemical Physics · doi:10.1039/c2cp43731g · Cited by 272
Metadata
- Authors
- Sterrer, M., Risse, T., Heyde, M., Rust, H.-P., & Freund, H.-J.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-05-14
- Volume
- 98
- Issue
- 20
- Pages
- 206103-206103
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2059253009
- Cited by
- 226
- References
- 0
- FWCI
- 14.67
- Type
- journal article
- Language
- en
- Open access
- green
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- Sterrer, M., Risse, T., Heyde, M., Rust, H.-P., & Freund, H.-J. (2007). Crossover from Three-Dimensional to Two-Dimensional Geometries of Au Nanostructures on Thin MgO(001) Films: A Confirmation of Theoretical Predictions. Physical Review Letters. https://doi.org/10.1103/physrevlett.98.206103
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