Spin injection and spin-charge conversion in LaAlO$_3$/SrTiO$_{3}$

The perovskite oxides family provides materials to efficiently generate and control spin polarized currents using respectively half-metallic ferromagnets such as mixed-valence manganites or ferroelectrics and multiferroics. More recently channel materials to transport spin information have also emerged. These include the LaAlO$_{3}$/SrTiO$_{3}$ two-dimensional electron system (2DES) which, in addition, possesses a gate-tunable spin-orbit coupling. A limitation of this system is however the minimum LaAlO$_{3}$ thickness of 4 uc required for 2DES formation. In this presentation we will show that this thickness can be reduced if the LaAlO$_{3}$ is capped by appropriate metals. We will also present different approaches to inject spins in these engineered LaAlO$_{3}$/SrTiO$_{3}$ 2DES and introduce detection schemes taking advantage of efficient spin-charge conversion via interfacial spin-orbit effects.