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Island Formation of Adspecies and LEED

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Low-Energy Electron Diffraction

Part of the book series: Springer Series in Surface Sciences ((SSSUR,volume 6))

Abstract

If the temperature of the surface is sufficiently low, an attractive interaction among adatoms or admolecules which are bound at sites of specific symmetry on the surface will give rise to the formation of ordered islands of the adsorbate. These islands are characterized by a local density greater than the overall density of the adsorbate on the surface. This local density is related to the two-dimensional periodicity within the ordered islands. Evidence for the formation of ordered islands has been observed quite frequently with LEED [10.1–5]. Both the thermodynamic and kinetic (e.g. adsorption, desorption, and surface diffusion) properties of an overlayer that contains islands are determined by the degree of order and the size and relative positioning of the islands [10.61 This information can be obtained using LEED since the shape (angular profile) of the diffracted electron beams is determined by the size and distribution of ordered regions of scatterers on the surface [10.7–15].

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Author information

Authors and Affiliations

  1. Materials and Molecular Research Division, Lawrence Berkeley Laboratory, and Department of Chemistry, University of California, 94720, Berkeley, CA, USA

    Dr. Michel A. Van Hove

  2. California Institute of Technology, 91125, Pasadena, CA, USA

    Professor William H. Weinberg

  3. Raychem Corp., 300 Constitution Dr., 94025, Menlo Park, CA, USA

    Dr. Chi-Ming Chan

Authors
  1. Dr. Michel A. Van Hove
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  2. Professor William H. Weinberg
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  3. Dr. Chi-Ming Chan
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© 1986 Springer-Verlag Berlin Heidelberg

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Van Hove, M.A., Weinberg, W.H., Chan, CM. (1986). Island Formation of Adspecies and LEED. In: Low-Energy Electron Diffraction. Springer Series in Surface Sciences, vol 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82721-1_10

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  • DOI: https://doi.org/10.1007/978-3-642-82721-1_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-82723-5

  • Online ISBN: 978-3-642-82721-1

  • eBook Packages: Springer Book Archive

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