A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Surface Electronic States
To characterize a surface completely, one needs to know the position and motion of atoms and electrons. In this chapter, we focus on the electronic part and assume that the atomic structure and atomic motion (e.g., surface vibrations) have been determined already by using techniques as described in several other parts of this series. To characterize an electron in a crystalline solid, it is sufficient to know its quantum numbers, i.e., energy, momentum, spin, and angular (point group) symmetry. For disordered solids, some of these quantum numbers become meaningless and it is useful to think in terms of a molecular picture where only the immediate neighborhood of an atom is considered, which exhibits short-range order. In this case, the characteristic quantities are energy levels, the coordination number, the oxidation state, etc.
Surface Electronic States
To characterize a surface completely, one needs to know the position and motion of atoms and electrons. In this chapter, we focus on the electronic part and assume that the atomic structure and atomic motion (e.g., surface vibrations) have been determined already by using techniques as described in several other parts of this series. To characterize an electron in a crystalline solid, it is sufficient to know its quantum numbers, i.e., energy, momentum, spin, and angular (point group) symmetry. For disordered solids, some of these quantum numbers become meaningless and it is useful to think in terms of a molecular picture where only the immediate neighborhood of an atom is considered, which exhibits short-range order. In this case, the characteristic quantities are energy levels, the coordination number, the oxidation state, etc.
Surface Electronic States
Vanselow, Ralf (editor) / Howe, Russell (editor) / Himpsel, F. J. (author)
1986-01-01
19 pages
Article/Chapter (Book)
Electronic Resource
English
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