Effect of d-potential on spin-polarized dwell time for electron in magnetic nanostructure

We theoretically explore the effect of a d-potential on spin-polarized dwell time for electron in a magnetic nanostructure, which can be achieved by depositing a vertically-magnetized ferromagnetic stripe on top of InAs/AlxIn1-xAs. The dwell time is found to be still spin-polarized because the d-potential does not eliminate the spin-field interaction in the magnetic nanostructure. Spin-polarized dwell time is also found to be controllable by changing weight or position of the d-potential since the effective potential experienced by electron in the magnetic nanostructure depends on the d-potential. Therefore, such a d-doped, magnetic nanostructure can act as a structurally-manipulable temporal spin splitter for spintronic device applications.