We present a theoretical study of the spin-dependent conductance spectra in a FM/semiconductor quantum-dot (QD)/FM system. Both the Rashba spin-orbit (SO) coupling in the QD and spin-flip scattering caused by magnetic barrier impurities are taken into account. It is found that in the...

We investigate the current and the spin torque in a system composed of a quantum dot (QD) connected to two ferromagnetic leads with arbitrary relative magnetization direction. An external magnetic field is applied to the QD, where the e–e Coulomb interaction is taken into account. Within the...

We investigated the shot noise properties in the diluted-magnetic-semiconductor/semiconductor heterostructures, where the sp-d exchange interaction gives rise to a giant spin splitting when an external magnetic field is applied along the growth direction of the heterostructures. It is found that...