Surface diffusion of K on Pd 111 studied by photoemission electron microscopy

Ondrejcek, Michal; Stenzel, W.; Conrad, Horst; Cháb, V.; Chvoj, Z.; Engel, Wilfried; Bradshaw, Alexander M.

doi:10.1016/0009-2614(93)89350-Q

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Surface diffusion of K on Pd 111 studied by photoemission electron microscopy

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Ondrejcek, Michal
Fritz Haber Institute, Max Planck Society;
Institute of Physics, 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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Engel, Wilfried
Fritz Haber Institute, Max Planck Society;

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

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Citation

Ondrejcek, M., Stenzel, W., Conrad, H., Cháb, V., Chvoj, Z., Engel, W., et al. (1993). Surface diffusion of K on Pd 111 studied by photoemission electron microscopy. Chemical Physics Letters, 215(6), 528-534. doi:10.1016/0009-2614(93)89350-Q.

Cite as: https://hdl.handle.net/21.11116/0000-000A-0404-D

Abstract

Surface diffusion of K atoms on Pd 111 has been measured by photoemission electron microscopy in a wide temperature range (150-450 K) for coverages η < 0.04. Two contributions to the diffusion process have been identified showing different rates and temperature dependences; both are determined by the surface microtopography. In the light of these result the discrepancy between microscopic and macroscopic diffusion constants can be understood.