Final Report Summary - MINT (Emerging electronic states and devices based on Mott insulator interfaces) Transition metal oxides possess a broad range of functionalities (superconductivity, magnetism, ferroelectricity, multiferroicity, etc) stemming from the interplay between structural, magnetic and electronic degrees of freedom. Recent work has revealed exciting physics at their interfaces, including two-dimensional (2D) conductivity and superconductivity in the electron gas that forms at the interface between two band insulators, LaAlO3 and SrTiO3. To expand the range of possible novel physical properties occurring at oxide interfaces, the MINT project proposed to add new ingredients namely electronic correlations and spin-orbit coupling. At interfaces between strongly correlated oxides such as ferromagnetic rare-earth titanates and antiferromagnetic rare-earth nickelates, we have revealed a new magnetic and electronic state in the nickelate, absent from the phase diagram of these materials. In parallel, we have made use of spin-orbit coupling to demonstrate a very strong inverse Rashba-Edelstein effect at LaAlO3/SrTiO3 interfaces, allowing the efficient conversion between spin currents and charge current. These findings could find applications in future nanoelectronics and notably to develop non-volatile spin-based logic for beyond CMOS technology.
