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Journal Article

Initial growth of Mg films on Ru(0001): An efficient approximation scheme for the LEED analysis of incommensurate structures

MPS-Authors
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Schwegmann,  Stefan
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Over,  Herbert
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Gierer,  Martin
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ertl,  Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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PhysRevB.53.11164.pdf
(Publisher version), 149KB

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Citation

Schwegmann, S., Over, H., Gierer, M., & Ertl, G. (1996). Initial growth of Mg films on Ru(0001): An efficient approximation scheme for the LEED analysis of incommensurate structures. Physical Review B, 53(16), 11 164-11 169. doi:10.1103/PhysRevB.53.11164.


Cite as: https://hdl.handle.net/21.11116/0000-0009-B7F5-4
Abstract
The epitaxial growth of incommensurate Mg layers on a Ru(0001) surface is investigated in the coverage range from submonolayers to 3 ML by analyzing low-energy electron-diffraction LEED I(V) data. For the analysis of the 2-ML Mg film, we developed an efficient approximation scheme that allows the determination of mean interlayer spacings without employing the full unit cell. The Mg-Ru spacing is found to be 2.32±0.05 Å, regardless of the presence of further Mg layers above. The Mg-Mg layer spacing in the Mg bilayer is 5%, expanded with respect to the value of the bulk material, while this layer spacing is expanded by only 2.5% after completion of the third Mg layer. The ABAB... stacking sequence is established from the beginning of the film growth.