Search for dissertations about: "spin effects"

Showing result 1 - 5 of 221 swedish dissertations containing the words spin effects.

  2. 1. First-principles theory of electrically-induced spin and orbital magnetization

    Author : Leandro Salemi; Peter M. Oppeneer; Yuriy Mokrousov; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spin-orbit torque; spin Hall effect; Rashba-Edelstein effect; spin Nernst effect; relativistic DFT; spin-orbitronics;

    Abstract : Spin-orbit torques (SOTs) have emerged recently as practical tools to control the magnetization in spintronic devices, but it is debated what the underlying fundamental processes are that enable fast and energy-efficient magnetization switching.In this thesis, we investigate theoretically possible means of controlling magnetization in magnetic materials and heterostructures. READ MORE

  4. 2. Spin transfer torques and spin dynamics in point contacts and spin-flop tunnel junctions

    Author : Alexander Konovalenko; Vladislav Korenivski; David W. Abraham; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; spin dynamics; spin transfer torques; point contacts; magnetization dynamics; Physics; Fysik;

    Abstract : The first part of this thesis is an experimental study of the spin-dependent transport in magnetic point contacts. Nano-contacts are produced micromechanically, by bringing a sharpened non-magnetic (N) tip into contact with a ferromagnetic (F) film. READ MORE

  5. 3. Theoretical Studies of Spin-Dependent Quantum Phenomena in Semiconductor Nanostructures

    Author : Patrik Brusheim; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Zitterbewegung.; spin Hall effect; spintronics; Spin; quantum transport;

    Abstract : The study of spin transport has emerged at the forefront of condensed matter physics during the last decade. Much of the interest has undoubtedly been sparked by the advent of the spintronics paradigm and the idea of creating novel electronic devices based on the spin degree of freedom of the carriers. READ MORE

  6. 4. Effects of Spin-Orbit Interactions in Ferromagnetic Metal Nanoparticles

    Author : Aleksander Cehovin; Matematisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; electrical; magnetic and optical properties; elementary spin excitations; spektroskopi; magnetisk resonans; supraledare; electron tunneling spectroscopy; Condensed matter:electronic structure; magnetic anisotropy; spin-orbit interactions; magnetism in nanostructures; egenskaper elektriska; ferromagnetic materials; magnetiska och optiska ; Kondenserade materiens egenskaper:elektronstruktur; relaxation; spectroscopy; supraconductors; magnetic resonance; Fysicumarkivet A:2003:Cehovin;

    Abstract : This thesis is a theoretical investigation of the effects of spin-orbit (SO) interactions in ferromagnetic metal nano-particles. Part I of the thesis is devoted to an elementary introduction of the research field, including recent experimental advances which partly motivated the work presented here. READ MORE

  7. 5. Quantum Kinetic Theory for Plasmas : spin, exchange, and particle dispersive effects

    Author : Robin Ekman; Gert Brodin; Jens Zamanian; Bengt Eliasson; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; teoretisk fysik; Theoretical Physics;

    Abstract : This thesis is about developing and studying quantum mechanical models of plasmas. Quantum effects can be important at high densities, at low temperatures, and in strong electromagnetic fields, in various laboratory and astrophysical systems. READ MORE