Search for dissertations about: "magnetic edge states"

Showing result 1 - 5 of 26 swedish dissertations containing the words magnetic edge states.

  1. 1. 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

  2. 2. 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

  3. 3. Electron Scattering Mechanisms in Low-Dimensional Transport Physics

    Author : Qin Wang; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; electron scattering mechanisms; mobility; scattering time; Coulomb scattering; alloy scattering; edge states; quantum Hall effect; SdH; conductance oscillations; quantized conductance; GaInAs InP; Low-dimensional structures; GaAs AlGaAs; Physics; Fysik; Fysicumarkivet A:1999:Wang;

    Abstract : Electron scattering mechanisms in low-dimensional semiconductor systems have been investigated at low temperatures. The influence of scatterers on magnetotransport in a high-mobility, GaAs/AlGaAs two-dimensional electron gas (2DEG) system was studied. READ MORE

  4. 4. Photoelectron Spectroscopy of High Temperature Superconductors and Related Compounds

    Author : Henrik Nylén; Synkrotronljusfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; egenskaper elektriska; supraledare; magnetiska och optiska ; magnetisk resonans; X-ray Absorption; Photoelectron Spectroscopy; Resonant Photoemission; Condensed matter:electronic structure; High Temperature Superconductors; Angle Resolved Photoemission; electrical; supraconductors; magnetic and optical properties; magnetic resonance; spectroscopy; spektroskopi; Kondenserade materiens egenskaper:elektronstruktur; relaxation; Fysicumarkivet A:1998:Nylén;

    Abstract : In this thesis, the high temperature superconductors (HTSC) Ba0.6K0.4BiO3, La2CuO4+x, Bi2Sr2Ca1-xYxCu2O 8+d, Bi2Sr2CuO6+d as well as semiconducting Ba0.9K0. READ MORE

  5. 5. Interactions, initial states, and low-dimensional semiconductors

    Author : Peter Jaksch; Stephanie M. Reimann-Wacker; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Q!uantum mechanical interactions; quantum point contact QPC ; quantum wires; exchange-correlation energy; Reilly model; quantum algorithms; Physics; Fysik;

    Abstract : This thesis is concerned with different aspects of quantum mechanical interactions. The first part of the thesis focuses on their effects in low-dimensional semiconductors; the second part on one of their applications: quantum algorithms, which utilize superpositions created from quantum mechanical interactions. READ MORE