Spin-dependent electron transport in a magnetic nanostructure with the δ-doping

We report on a theoretical study of spin-dependent electron transport in a magnetic nanostructure with the δ-doping. It is revealed that the transmission probability, the electron conductance and the spin-polarization obviously depend on the weight of the δ  -doping. It is also revealed that the transmission probability and the spin-polarization (PTPT) both show a periodic profile with the increase of the length L2L2. These interesting phenomena will be more helpful for understanding the experimental physical phenomena in δ-doping and for making new types of devices.