The local bond geometry of K adsorbed on Al(111) at low temperature has been studied by photoelectron diffraction (PED) as a function of K coverage. It is found that K atoms occupy on-top sites in the coverage range 0.05-0.4 monolayer and that the KAl bond length increases by 0.17 Å over this coverage range. The reliability of this result is supported by PED studies of the (√3 × √3)R30° structures formed by adsorption of one-third monolayer Na and K at 300 K, and K at 150 K, which give results in quantitative agreement with previous structure determinations by SEXAFS and LEED. © 1995.
Christensen, S. V., Nielsen, K. T., Nerlov, J., Batchelor, D. R., & Adams, D. L. (1995). Change in adsorption bond length with coverage for K Al(111). Surface Science, 339(3). https://doi.org/10.1016/0039-6028(95)80058-1