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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Kristallfläche"”.
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Nucleation and stacking faults on the Iridium (111) surface
By analyzing the saturation island density during nucleation in homoepitaxial growth on Ir(111) using scanning tunneling microscopy (STM), parameters of adatom diffusion could be determined. Furthermore, for the first time also the diffusion barrier for the dimer was determined by this method. …
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Pattern formation and evolution on Pt(111) by grazing incident ion bombardment
By analyzing by scanning tunnelling microscopy (STM) the amount of material which is removed during grazing incidence ion bombardment from a Pt(111) sample, it was possible to determine the different sputtering yields of ions impinging either on ascending step edges or hitting onto flat terraces. …
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Influence of material, surface reconstruction and strain on submonolayer growth at Si(111) and Ge(111) surfaces
The present work is dedicated to the experimental investigation of influence of strain, surface reconstruction, and material on the surface diffusion, nucleation, and growth of two-dimensional islands at the initial stage of the epitaxial growth on the Ge(111) and Si(111) surfaces. A set of the …
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Dynamics and manipulation of surface states
The properties of two-dimensional (2D) electronic states located at the surface of the (111) faces of the noble metals Ag, Cu, andAu as well as 2D overlayer states of single atom layer Sodium films on Cu(111) have been investigated using scanning tunnelingspectroscopy (STS). All measurements were …
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RTM Untersuchungen an zweidimensionalen Nanostrukturen am Beispiel der reinen Au(100)-Oberfläche und des selbstassemblierten Systems Sauerstoff auf Cu(110)
In this STM study, nanostructures on metallic single crystals are observed under UHV conditions. The aim of the work at the Au(100)-surface is to evaluate an energetic quantity, namely the step free energy, from a topographic structure information. Adatom and vacancy islands are produced on the …
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Berechnung von Stufenkanten auf der As-bedeckten Si(111)-Oberfläche mit einem parallelisierten ab initio Programm
The first part of this thesis presents the parallelisation of the EStCoMPP-code (EStCoMPP is an acronym for "Electronic Structure Code for Materials Properties and Processes"). Using Density-Functional-Theory EStCoMPP simulates many electron systems, found in molecules and solids and computes …
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Optische Dreiwellenspektroskopie an GaAs(001), Si(111) und Pt-Elektrolyt-Grenzflächen
Nonlinear optical spectroscopy was used to investigate GaAs(001), Si(111) and Pt-electrolyte interfaces. GaAs(001): The spectral dispersion of the magnitude of the second-order nonlinear susceptibility |æxyz| of GaAs has been determined by second-harmonic generation (SHG) for two-photon energies …
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First principles theory of organic molecules on metal surfaces : formate, 3-thiophene-carboxylate and glycinate on Cu(110)
We have performed ab initio calculations for the understanding of the interaction between organic molecules and the Cu(110) surface. We have used the program package EStCoMPP (Electronic Structure Code for Material Properties and Processes) that is based on density functional theory, …
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Wachstum von dreidimensionalen Germaniuminseln auf unverspannten und verspannten Silizium(001)-Oberflächen
This thesis is dedicated to the scanning tunneling microscopical investigation of the influence of strain and relaxation on the epitaxial growth of germanium on conventional silicon substrates, as well as on silicon-germanium substrates covered by a strained silicon layer. With respect to a …