摘要
The present research is devoted to the investigation of electron spin transmission through a nanoelectronic device.This device is modeled as nonmagnetic semiconductor quantum dot coupled to two diluted magnetic semiconductor leads.The spin transport characteristics through such a device are investigated under the effect of an ac-field of a wide range of frequencies.The present result shows a periodic oscillation of the conductance for both the cases of parallel and antiparallel spin alignment.These oscillations are due to Fano-resonance.Results for spin polarization and giant magneto-resistance show the coherency property.The present research might be useful for developing single spin-based quantum bits(qubits)required for quantum information processing and quantum spin-telecommunication.
