THE ELECTRON TRANSPORT IN A NANOSTRUCTURE MODULATED BY THE MAGNETIC FIELD AND THE δ-DOPING.

We theoretically investigate the effect of the δ -doping on the electron transport in a magnetic nanostructure, which can be experimentally realized by depositing one ferromagnetic stripe on the top of a semiconductor heterostructure. We find that the position and the strength of the δ -doping as well as the distance between the two magnetic fields play an important role on the electron transport properties such as the transmission probability, the conductance and the spin polarization. These interesting results may be very helpful for analyzing the spin-dependent transport mechanism of the electron and making the new types of the spintronic devices. [ABSTRACT FROM AUTHOR]