Search for dissertations about: "surface states and resonances"

Showing result 6 - 10 of 13 swedish dissertations containing the words surface states and resonances.

  2. 6. Interferences in valence-electron photoemission observed via cross sections and line shapes for metal overlayer quantum well states and resonances

    Author : Dan Claesson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; alkali metals; thin films; angle resolved photoemission; surface electronic phenomena; quantum wells;

    Abstract : .... READ MORE

  4. 7. Excitonic Effects and Energy Upconversion in Bulk and Nanostructured ZnO

    Author : Shula Chen; Irina Buyanova; Weimin Chen; Detlev M. Hofmann; Linköpings universitet; []
    Keywords : ;

    Abstract : Zinc Oxide (ZnO), a II-VI wurtzite semiconductor, has been drawing enormous research interest for decades as an electronic material for numerous applications. It has a wide and direct band gap of 3.37eV and a large exciton binding energy of 60 meV that leads to intense free exciton (FX) emission at room temperature. READ MORE

  5. 8. Interaction between electronic and vibrational edge states in graphene

    Author : Anton Vikström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; collective excitations; quantum acous- tics; quantum Hall effect; edge waves; graphene; solitons;

    Abstract : A sheet of graphene in a magnetic field perpendicular to the sheet has electronic edge states with nonzero velocities. These edge states are localized to the edge of the sheet on the order of the magnetic length. READ MORE

  6. 9. Angle-Dependent Electron Spectroscopy Studies of C60 Compounds and Carbon Nanotubes

    Author : Joachim Schiessling; P. A. Brühwiler; J. Nordgren; Hans-Peter Steinrück; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; fullerenes; C60; K3C60; multi-walled carbon nanotubes; molecules; clusters; electron spectroscopy; synchrotron radiation; x-ray absorption; x-ray emission; molecular orbitals; charge transfer; electron correlation; surface physics; Fysik; Physics; Fysik;

    Abstract : Fullerenes have been shown to constitute a prototypical building block for truly nanometer-sized devices and exotic nanounit-based materials, e.g., high-temperature superconductors. READ MORE

  7. 10. Calculations of Electronic Properties of Metal Surfaces and Superlattices

    Author : Stella Papadia; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Investigations of some aspects of electronic properties of metal surfaces and superlattices are presented in this Thesis. The calculations are based on Density-Functional methods. The first topic is resonances at free-electron-like metal surfaces. READ MORE