Spin Filtering by Field-Dependent Resonant Tunneling

Spin-dependent Resonant Tunneling in Ferromagnet-Oxide-Silicon Structures

Bidirectional resonant tunneling spin pump

Resonant tunneling-based spin ratchets

We outline a generic ratchet mechanism for creating directed spin-polarized currents in ac-driven double well or double dot structures by employing resonant spin transfer through the system engineered by local external magnetic fields. We show its applicability to semiconductor nanostructures by considering coherent transport through two coupled lateral quantum dots, where the energy levels of ...

Resonant Spin-dependent Tunneling in Spin-valve Junctions in the Presence of Paramagnetic

The tunnel magnetoresistance (TMR) of F/O/F magnetic junctions, (F’s are ferromagnetic layers and O is an oxide spacer) in the presence of magnetic impurities within the barrier, is investigated. We assume that magnetic couplings exist both between the spin of impurity and the bulk magnetization of the neighboring magnetic electrode, and between the spin of impurity and the spin of tunneling el...

Resonant tunneling in a pulsed phonon field