Browsing by Author "Braun, Wolfgang"
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- ItemElektronenkorrelation und Dissipationsprozesse in Halbleiterquantenstrukturen, Teilvorhaben: Heteroepitaxie ferromagnetischer Materialien auf III-V Halbleiter für Spininjektion : Schlussbericht(Hannover : Technische Informationsbibliothek (TIB), 2005) Ploog, Klaus H.; Braun, Wolfgang; Kaganer, Vladimir M.; Jenichen, Bernd; Satapathy, Dillip K.[no abstract available]
- ItemMBE von kristallinen Gate-Dielektrika und Grenzflächen-Engineering : Schlussbericht zum Teilprojekt innerhalb des bmb+f Verbundprojektes "Kristalline Gate-Stacks für sub 100nm CMOS-Transistoren auf FD-SOI" - KrisMOS(Hannover : Technische Informationsbibliothek (TIB), 2007) Braun, Wolfgang[no abstract available]
- ItemOstwald ripening of faceted two-dimensional islands(Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik, 2007) Kaganer, Vladimir; Braun, Wolfgang; Sabelfeld, KarlWe study Ostwald ripening of two-dimensional adatom and advacancy islands on a crystal surface by means of kinetic Monte Carlo simulations. At large bond energies the islands are square-shaped, which qualitatively changes the coarsening kinetics. The Gibbs--Thomson chemical potential is violated: the coarsening proceeds through a sequence of `magic' sizes corresponding to square or rectangular islands. The coarsening becomes attachment-limited, but Wagner's asymptotic law is reached only after a very long transient time. The unusual coarsening kinetics obtained in the Monte Carlo simulations are well described by the Becker--Döring equations of nucleation kinetics. These equations can be applied to a wide range of coarsening problems.