Temperature dependence of the surface diffusion coefficient of K atoms on 
Pd{111} measured with PEEM

Snabl, M.; Ondřejček, M.; Cháb, V.; Stenzel, W.; Conrad, Horst; Bradshaw, Alexander M.

doi:10.1016/0039-6028(95)01189-7

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Temperature dependence of the surface diffusion coefficient of K atoms on Pd{111} measured with PEEM

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Snabl, M.
Fritz Haber Institute, Max Planck Society;
Institute of Physics, Czech Academy of Science;

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Stenzel, W.
Fritz Haber Institute, Max Planck Society;

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Conrad, Horst
Fritz Haber Institute, Max Planck Society;

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Bradshaw, Alexander M.
Fritz Haber Institute, Max Planck Society;

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Citation

Snabl, M., Ondřejček, M., Cháb, V., Stenzel, W., Conrad, H., & Bradshaw, A. M. (1996). Temperature dependence of the surface diffusion coefficient of K atoms on Pd{111} measured with PEEM. Surface Science, 352-354(6), 546-551. doi:10.1016/0039-6028(95)01189-7.

Cite as: https://hdl.handle.net/21.11116/0000-0009-ABBC-3

Abstract

The surface diffusion of potassium on Pd{111} has been studied in real time as a function of temperature between 100 and 190 K in the limit of zero concentration (Θ < 0.05 ML) using photoelectron emission microscopy (PEEM). Very fast migration of K atoms was observed on flat, quasi-one-dimensional regions of the surface between the step bunches. The temperature dependence of the diffusion coefficient indicates an activated process with an energy barrier of 66 ± 11 meV.