Spin-Polarized Non-Local Transport in Hybrid Structures with Magnetic and Superconducting Correlations
In this thesis we theoretically examine spin-polarized non-local transport in two junctions built up by materials with superconducting and magnetic properties. The first consists of a Zeeman-split superconductor placed between two normal metals. We find that such systems can generate a spin-polarized non-local current even when the injected current is unpolarized. The effect is however mostly geometric and take place also when the superconductor is switched with a normal metal. The second system is built up by two ferromagnetic wires coupled by a superconductor via spin-active interfaces. We investigate the circumstances which allow for an inverse spin-valve effect. For certain parameter ranges we find that a crossover between positive and negative magnetoresistance is possible as a function of temperature.
Place, publisher, year, edition, pages
Institutt for fysikk , 2012. , 59 p.
ntnudaim:7421, MTFYMA fysikk og matematikk, Teknisk fysikk
IdentifiersURN: urn:nbn:no:ntnu:diva-18396Local ID: ntnudaim:7421OAI: oai:DiVA.org:ntnu-18396DiVA: diva2:565891
Linder, Jacob Rune Wüsthoff, Førsteamanuensis