Effect of the -doping on the electron transport in a structure modulated by the magnetic barriers

The effect of the δ -doping on the electron transport has been theoretically studied in a structure modulated by the magnetic barriers. The results show that the transmission probability and the electron conductance can be dramatically suppressed by the weight of the δ -doping. However, the spin-injection efficiencies are obviously enhanced. In addition, the transmission probability and the spin-polarization both show a periodic profile with the increase of L 2 . These interesting features will be more helpful for developing new types of devices.