A bias-tunable electron-spin filter based on a two-dimensional electron gas modulated by ferromagnetic-Schottky metal stripes

We investigate the effect of the bias in an electron-spin filter based on a two-dimensional electron gas modulated by ferromagnetic-Schottky metal stripes. The numerical results show that the electron transmission and the conductance as well as the spin polarization are strongly dependent on the bias applied to the device.

Research highlights► We propose a bias-tunable electron-spin filter. ► The transmission and the conductance depend on the bias and the electron energy. ► The spin polarization depends on the bias and the electron energy. ► The results are helpful for making new types of bias-tunable spin filters.