Journal
PHYSICAL REVIEW B
Volume 100, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.100.241403
Keywords
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Funding
- European Research Council (ERC) under the European Unions Horizon 2020 Research and Innovation Program [669179]
- Italian MIUR through the PRIN 2017 Project MULTI-e
- Alexander von Humboldt Foundation
- MPG partner group program
- FAPERJ
- CNPq
- European Research Council (ERC) [669179] Funding Source: European Research Council (ERC)
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Purely amorphous germania bilayer films are grown on a reconstructed Au(111) surface. The presence of the film affects the native configuration of the Au soliton walls, as observed with scanning tunneling microscopy. They partly avoid the film islands, and partly penetrate under film patches. This behavior indicates a weaker film-substrate interaction than the one reported for other oxide films on reconstructed Au(111). Moreover, this new system highlights the impact of the metal support on the structure of ultrathin films of germania: With decreasing film-substrate interaction the amorphous phase is promoted. Density functional theory calculations confirm and rationalize the experimental observations. This work provides a useful generalization of the relationship between film structure and adhesion energy.
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