Spin Polarization in Ferromagnetic Barrier Phosphorene Superlattice Under an Exterior Magnetic Field

The transport properties, containing the spin polarization and transmission probability, theoretically have been investigated on the exposure of an exterior magnetic field for single-layer phosphorene superlattice using the transfer matrix method. We illustrated that by controlling incoming energy, external magnetic field, or through varying the distance between two barriers, the number of barriers, and its thickness, spin transmission probabilities for phosphorene superlattice can be adjusted. The results have shown that the most transmission probability in the attendance of an exterior magnetic field happened for 5 barriers, as well as the transmission probability reduces by raising the width of the separation in the barriers for a specific magnetic field. As well, an electron beam whose spin polarization is zero can be converted into an ideal efficiency spin polarization by controlling the external magnetic field, which has a substantial role in qubit circuits.