Effect of asymmetric interface on charge and spin transport across two dimensional electron gas with Dresselhaus spin-orbit coupling/ferromagnet junction

Highlights: • The normal, spin-flip scattering, and scattering from the Rashba spin orbit coupling at the interfaces were included. • We compared the effect of these scattering forms and showed a method to perform a height spin polarization of the conductance. We theoretically studied the effect of interfacial scattering on the transport of charge and spin across the junction of a two-dimensional electron gas with Dresselhaus spin-orbit coupling and ferromagnetic material junction, via the conductance $\left(G\right)$ and the spin-polarization of the conductance spectra $\left(P\right)$ using the scattering method. At the interface, not only were the effects of spin-conserving $\left(Z_0\right)$ and spin-flip scattering $\left(Z_f\right)$ considered, but also the interfacial Rashba spin-orbit coupling scattering $\left(Z_{\mathrm{RSOC}}\right)$, which was caused by the asymmetry of the interface, was taken into account, and all of them were modeled by the delta potential. It was found that G was suppressed with increasing $Z_0$, as expected. Interestingly, a particular value of $Z_f$ can cause G and P to reach a maximum value. In particular, $Z_{\mathrm{RSOC}}$ plays a crucial role to reduce G and P in the metallic limit, but its influence on the tunneling limit was quite weak. On the other hand, the effect of $Z_{\mathrm{RSOC}}$ was diminished in the tunneling limit of the magnetic junction.