Angular conductance resonances of quantum dots non-collinearly coupled to ferromagnetic leads
2005 (English)In: Europhysics Letters, Vol. 70, no 6, 796-802 p.Article in journal (Refereed) Published
The zero-bias conductance of quantum dots coupled to ferromagnetic leads is investigated. In the strong-coupling regime, it is found that the conductance is a non-monotonic function of the angle between the magnetisation directions in the two contacts. This behaviour is an effect of the presence of the leads which induces an angle-dependent spin-split of the quantum dot states, and spin-flip transitions between the quantum dot states whenever the magnetisation directions of the leads are non-collinear, which enhances the current density at the chemical potential. In the weak-coupling regime, the system reverts to normal spin valve character.
Place, publisher, year, edition, pages
2005. Vol. 70, no 6, 796-802 p.
Spin transport through interfaces, Quantum dots, Coulomb blockade; single-electron tunneling
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-77151OAI: oai:DiVA.org:uu-77151DiVA: diva2:105063