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Influence of surface roughness on adsorbate mobility

Cross-correlation measurements of potassium coadsorbed with nickel on the W(112) plane

  • Surfaces, Interfaces, and Layer Structures
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Abstract

Field-emission fluctuations of the coadsorption system W(112)Ni-K were investigated by the cross-correlation technique in two perpendicular crystallographic directions at various temperatures. In- and cross-channel movements show a considerable reduction ofτ max which is the time delay corresponding to the cross-correlation function maximum with increasing Ni coverage at a constant potassium probe concentration.τ max, its activation energy and the “signal velocity” are discussed in terms of the well-known W(112)Ni surface structure.

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Authors and Affiliations

  1. Instytut Fizyki Doświadczalnej, Uniwersytet Wrocławski, PL-50-205, Wrocław, Poland

    R. Błaszczyszyn

  2. Sektion Physik, Karl-Marx-Universität Leipzig, DDR-7010, Leipzig, German Democratic Republic

    Ch. Kleint

Authors
  1. R. Błaszczyszyn
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  2. Ch. Kleint
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Błaszczyszyn, R., Kleint, C. Influence of surface roughness on adsorbate mobility. Appl. Phys. A 46, 145–151 (1988). https://doi.org/10.1007/BF00615923

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  • DOI: https://doi.org/10.1007/BF00615923

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