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The Adsorbate-Free Surface

  • S. Roy Morrison
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Abstract

We are very fortunate in recent years that excellent theoretical models and excellent experimental techniques have been developed that permit a reasonable description of the solid surface with no foreign species adsorbed or reacted. Although from most practical points of view the more interesting system is that with foreign species present, a knowledge of the behavior of the clean surface is necessary as a starting point in understanding surface phenomena and as background to discuss the bonding of the foreign species. From the chemical point of view (of surface reactivity) one is interested in the available “intrinsic” surface orbitals present on the clean surface. We want to know their chemical binding characteristics, whether they can provide or accept single electrons in a level of energy suitable for covalent bonding, or whether they can provide or accept electron pairs in levels of energy suitable for acid/base bonding. We want to know the directional characteristics of such bonding orbitals. From the physical point of view (the electronic properties of the solid), the energy of the orbitals (surface state energy) and whether they donate or accept electrons is of first importance. But it is also important to know what surface states will result when these energy levels are altered by reconstruction or by foreign species adsorbing and interacting with the surface sites.

Keywords

Surface State Clean Surface Electron Energy Loss Spectroscopy Valence Band Edge Schroedinger Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • S. Roy Morrison
    • 1
  1. 1.Simon Fraser UniversityBurnabyCanada

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