During the last years much attention has been devoted to the investigation of the electronic properties of surfaces and interfaces from first-principle calculations. The microscopic physics of a great number of systems has been investigated in details and many mechanisms and processes have been focused and understood. First-principle calculations are mainly based on the density functional theory in its local density approximation. Recently a substantial advancement in the calculation of the electronic states has been achieved by the computation of quasi-particle energies including self-energy correction. The computational techniques used can be divided between all-electron and pseudopotential approaches. All-electron calculations are usually performed within the linear-method scheme that strongly simplifies the computational problem. After a brief introduction of the theoretical framework and methods, we will present the application of linear methods to the investigation of a) the clean surface of a semiconductor, b) the metal-semiconductor interface and c) the magnetic properties of surfaces and interfaces.
|Data di pubblicazione:||1990|
|Titolo:||Electronic and magnetic properties of interfaces|
|Autori:||O. BISI; OSSICINI S|
|Titolo del libro:||Photoemission and absorption spectroscopy of solids and interfaces with synchrotron radiation|
|Collana:||by International School of Physics "Enrico Fermi"|
|Appare nelle tipologie:||Capitolo/Saggio|
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