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Surfaces of Compound Semiconductors
Abstract Compound semiconductors are characterized by the fact that there is electron transfer between the electropositive and the electronegative atom. This means that self-consistency effects are very important, even for bulk properties such as the splitting between LO and TO phonon modes. Self-consistency will become even more important in the treatment of surfaces and interfaces. For this reason the first section is devoted to an analysis of such effects. This begins with general arguments separating long-range from short-range effects and showing the physical basis of the so-called “local neutrality condition”. Then a tight-binding formulation of self-consistency effects will be presented for further application to the prediction of core-level shifts and band offsets. Finally we give the values of the cation and anion dangling bond levels determined from the zero-charge condition which will help us in the understanding of surface and interface properties.
Surfaces of Compound Semiconductors
Abstract Compound semiconductors are characterized by the fact that there is electron transfer between the electropositive and the electronegative atom. This means that self-consistency effects are very important, even for bulk properties such as the splitting between LO and TO phonon modes. Self-consistency will become even more important in the treatment of surfaces and interfaces. For this reason the first section is devoted to an analysis of such effects. This begins with general arguments separating long-range from short-range effects and showing the physical basis of the so-called “local neutrality condition”. Then a tight-binding formulation of self-consistency effects will be presented for further application to the prediction of core-level shifts and band offsets. Finally we give the values of the cation and anion dangling bond levels determined from the zero-charge condition which will help us in the understanding of surface and interface properties.
Surfaces of Compound Semiconductors
Dr. Lannoo, Michel (author) / Dr. Friedel, Paul (author)
1991-01-01
27 pages
Article/Chapter (Book)
Electronic Resource
English
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