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Journal Article

Continuous network structure of two-dimensional silica across a supporting metal step edge: An atomic scale study

MPS-Authors
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Gura,  Leonard
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Lewandowski,  Adrian
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Marschalik,  Patrik
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Yang,  Zechao
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Schneider,  Wolf-Dieter
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Heyde,  Markus
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Freund,  Hans-Joachim
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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PhysRevMaterials.5.L071001.pdf
(Publisher version), 3MB

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Citation

Gura, L., Tosoni, S., Lewandowski, A., Marschalik, P., Yang, Z., Schneider, W.-D., et al. (2021). Continuous network structure of two-dimensional silica across a supporting metal step edge: An atomic scale study. Physical Review Materials, 5(7): L071001. doi:10.1103/PhysRevMaterials.5.L071001.


Cite as: https://hdl.handle.net/21.11116/0000-0009-155E-7
Abstract
The network structure of a silica bilayer film at a monolayer-bilayer transition and across a supporting metal step edge was studied at the atomic scale by scanning tunneling microscopy. The ring size distribution, ring-ring distances, and height profiles are analyzed across the step edge region. Density functional theory proposes two models to explain the observed network structure: a pinning of the lower layer to the substrate and a carpetlike mode. The results indicate a continuous coverage of the silica bilayer film across the step edge.