Thickness Control of the Spin-Polarized Two-Dimensional Electron Gas in LaAlO₃/BaTiO₃ Superlattices.

ABSTRACT: We explored the possibility of increasing the interfacial carrier quantum confinement, mobility and conductivity in the (LaAlO₃)_n/(BaTiO₃)_n superlattices by thickness regulation using the first-principles electronic structure calculations. Through constructing two different interfacial types of LaAlO₃/BaTiO₃ superlattices, we discovered that the LaO/TiO₂ interface is preferred from cleavage energy consideration. We then studied the electronic characteristics of two-dimensional electron gas (2DEG) produced at the LaO/TiO₂ interface in the LaAlO₃/BaTiO₃ superlattices via spin-polarized density functional theory calculations. The charge carrier density of 2DEG has a magnitude of 10

SUBMITTER: Chen C 

PROVIDER: S-EPMC5765129 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature