Search for dissertations about: "surface states and resonances"

Showing result 1 - 5 of 12 swedish dissertations containing the words surface states and resonances.

  1. 1. Reactivity of Transition-Metal Compounds from Electronic Structure

    Author : Aleksandra Vojvodic; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; magnetic edge states; electronic structure; density-functional theory; growth; surface states and resonances; nitrides; density of states; hydrodesulphurisation; sulphides; steam reforming; transition-metal carbides; Bronsted-Evans Polanyi relation; scaling relations; adsorption; descriptor; reactivity; catalysis;

    Abstract : Transition-metal carbides (TMC's), nitrides, and sulfides belong to the class of materials known as transition-metal compounds (TMX's). Besides having intriguing properties, these materials are relevant for, e.g., growth and catalysis. READ MORE

  2. 2. Strong Light-Matter Interactions and Formation of Hybrid States at the Nanoscale

    Author : Martin Wersäll; Chalmers University of Technology; []
    Keywords : coherent interactions; localized surface plasmon resonances; strong coupling;

    Abstract : Noble metallic nanoparticles, which support localized surface plasmon resonances (LSPR), offer a variety of potential scientific and industrial utilizations. Due to their remarkable ability to confine light at nanoscale dimensions, far below the optical diffraction limit, plasmonic nanoparticles enable intricate light manipulations, which may be performed and exploited for a wide range of future revolutionary applications. READ MORE

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

    Author : Dan Claesson; Chalmers University of Technology; []
    Keywords : alkali metals; thin films; angle resolved photoemission; surface electronic phenomena; quantum wells;

    Abstract : .... READ MORE

  4. 4. 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. 5. Interaction between electronic and vibrational edge states in graphene

    Author : Anton Vikström; Chalmers University of Technology; []
    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