Structure of the quasihexagonal close-packed (4 × 4) Na layer on Al(111): a 
SEXAFS study

Schmalz, A.; Aminpirooz, Soraya; Haase, J.; Batchelor, D.R.; Nielsen, M.M.; Bøgh, E.; Adams, D.L.

doi:10.1016/0039-6028(94)91275-0

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Structure of the quasihexagonal close-packed (4 × 4) Na layer on Al(111): a SEXAFS study

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Schmalz, A.
Fritz Haber Institute, Max Planck Society;

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Aminpirooz, Soraya
Fritz Haber Institute, Max Planck Society;

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Haase, J.
Fritz Haber Institute, Max Planck Society;

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引用

Schmalz, A., Aminpirooz, S., Haase, J., Batchelor, D., Nielsen, M., Bøgh, E., & Adams, D. (1994). Structure of the quasihexagonal close-packed (4 × 4) Na layer on Al(111): a SEXAFS study. Surface Science, 301(1-3), L211-L216. doi:10.1016/0039-6028(94)91275-0.

引用: https://hdl.handle.net/21.11116/0000-0009-9E65-4

要旨

The Al(111)-(4 × 4)-Na structure formed by adsorption of Na on Al(111) at low temperature is studied by surface extended X-ray absorption fine structure (SEXAFS). Analysis of the SEXAFS measurements shows that the adsorbed layer is quasihexagonal close-packed and slightly compressed, with a nearest-neighbour Na-Na bond length of 3.70 ± 0.03 Å. Na atoms are adsorbed in 3 different adsorption sites with roughly equal Na-Al bond lengths of 2.8 Å but different perpendicular distances from the surface. Thus the Na layer is not strictly planar.