OXIDE HETEROSTRUCTURES HAVING SPATIALLY SEPARATED ELECTRON-HOLE BILAYERS

摘要

Oxide heterostructures that form spatially separated electron-hole bilayers are provided. Also provided are electronic devices that incorporate the oxide heterostructures. The oxide heterostructure includes a base layer of SrTiO₃, a polar layer of LaAlO₂, and a non-polar layer of SrTiO₃. Within the oxide heterostructures, a two-dimensional hole gas (2DHG) is formed at the interface between the non-polar layer and the polar layer and a two-dimensional electron gas (2DEG) is formed at the interface between the polar layer and the base layer.