Sökning: "spin wave"

Visar resultat 11 - 15 av 18 uppsatser innehållade orden spin wave.

1. 11. 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

3. 12. Majorana bound states in inhomogeneous nanowires

   Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Författare :Johan Ekström; [2017]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Majorana bound states are in condensed matter physics quasiparticle excitations which can be found in so-called topological superconductors. They have lately received much attention since they have been predicted to be partly immune to decoherence and therefore suitable for quantum computation. LÄS MER

4. 13. Micromagnetic simulations of magnetization dynamics in iron-palladium nanostructure arrays

   Master-uppsats, Uppsala universitet/Materialfysik

   Författare :Agne Ciuciulkaite; [2016]
   Nyckelord :micromagnetic simulations; magnetization dynamics; iron-palladium circular islands; ferromagnetic resonance;

   Sammanfattning : Previous investigations of FePd circular island arrays have shown the hysteresis-free switching from vortex to collinear magnetic state at high temperatures [1]. This raises interest in the exploration of the temperature and inter-island interaction effect on the magnetization dynamics in this kind of structures. LÄS MER

5. 14. How the ground state in a material will be affected by the spin-phonon interactions between nuclei in diatomic molecular structures

   Kandidat-uppsats, Uppsala universitet/Materialteori

   Författare :Isabel Roca Vich; [2016]
   Nyckelord :spin-phonon coupling; spin-phonon interactions;

   Sammanfattning : Wave-like phonons are often used to describe the heat capacity in materials. In this report the spin-phonon interaction between nuclei in a diatomic molecular structure is introduced by looking at the Hamiltonian in its ground state. The corresponding Green's functions are computed in order to investigate how this interaction affects the phonons. LÄS MER

7. 15. The Dirac Equation for a Particle in a Spherical Box Potential with Application in Bag Modeling

   Kandidat-uppsats, KTH/Teoretisk fysik

   Författare :Emil Blomquist; Trotte Boman; [2015]
   Nyckelord :;

   Sammanfattning : The Dirac equation is a relativistic wave equation and was the first equation to capture spin in relativistic quantum mechanics. Here, the Dirac equation will be derived and solved for a particle in a spherical box potential. LÄS MER