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First principles study of nano-scale materials: quantum dots and nanowires.

Authors: J.G. Vilhena

Ref.: PhD thesis, Université Claude Bernard - Lyon 1 (2011)

Abstract: In brief the objective of this thesis is to understand the physics behind two of the most popular nano-scale systems, the quantum dots and the nano-wires. To achieve this goal we will use a broad spectra of state of the art first principles methods such as: density functional theory, time dependent density functional theory and many-body perturbation theory (in particular, the GW approximation and the Bethe-Salpeter equation). At the end of the thesis, we shall not only to be able to understand how the dimensionality of a system changes its properties, but also to what extent some commonly used methods are well suited to describe this class of systems.

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