Sökning: "spin polarization"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden spin polarization.

  1. 1. Three-body decay as a baryon polarizer

    Kandidat-uppsats, Uppsala universitet/Kärnfysik

    Författare :Carl Johan Königsson; [2023]
    Nyckelord :Three-body decay; polarization; CP violation; hyperon; resonance; Trekroppssönderfall; polarisation; CP-brytning; hyperon; resonans;

    Sammanfattning : According to the standard model, the size of CP violation in the weak decay Λ → pπ- is predicted to be ∼ 10-5. This means that a very high precision is needed if we want to be able to measure it. LÄS MER

  3. 2. Improving polarizing neutron optics by introducing 11B4C as interlayers

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Martin Falk; [2023]
    Nyckelord :Thin film multilayers; Neutron optics; Neutron polarization;

    Sammanfattning : In this report, the effects of adding 11B4C as interlayers into Fe/Si multilayers is studied. Fe/Si multilayers are commonly used for neutron polarization at large research facilities, and improving the polarizing properties would improve their efficiency. LÄS MER

  4. 3. Formulation of Model Problem for Chirality Induced Spin Selectivity Effect

    Kandidat-uppsats, Uppsala universitet/Materialteori

    Författare :Henrik Bruce; [2020]
    Nyckelord :Chirality; Spin selectivity; CISS;

    Sammanfattning : Spin dependent electron transport in chiral molecules, the so-called chirality induced spin selectivity (CISS) effect, have attracted much attention over the past few years. Experimentally the spin polarization has been detected, and there is a theoretical consensus on the necessity of both spin-orbit coupling and geometrical helicity in order to get a non-vanishing spin polarization. LÄS MER

  5. 4. The Magnon-Phonon coupling from a microscopic perspective

    Kandidat-uppsats, Uppsala universitet/Materialteori; Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Niclas Samuelsson; [2019]
    Nyckelord :;

    Sammanfattning : In this project a microscopic description of the magnon-phonon coupling is rederived. This theory is then used to simulate the thermalization process between the spin and lattice system in NiO. It is argued that the Kusuya-LeCraw process (1 mg + 1 ph into 1 mg) cannot be the reason that the phononic and magnonic systems reach a thermal equilibrium. LÄS MER

  7. 5. Theoretical understanding and calculation of the Edelstein effect

    Kandidat-uppsats,

    Författare :Gustav Eriksson; Hampus Nyström; [2017]
    Nyckelord :edelstein effect; spin polarization;

    Sammanfattning : The main topic of this project is the so called Edelstein effect. This recently discovered effect consists in the possibility of converting an electric field (a current) into a magnetization in materials that fulfill specific characteristics, more specifically materials where an effective Rashba spin-orbit coupling is present. LÄS MER