Electron gas at the interface between two antiferromagnetic insulating manganites
arXiv:0804.3454 · doi:10.1103/PhysRevB.78.024415
Abstract
We study theoretically the magnetic and electric properties of the interface between two antiferromagnetic and insulating manganites: La0.5Ca0.5MnO3, a strong correlated insulator, and CaMnO3, a band-insulator. We find that a ferromagnetic and metallic electron gas is formed at the interface between the two layers. We confirm the metallic character of the interface by calculating the in-plane conductance. The possibility of increasing the electron gas density by selective doping is also discussed.
6 pages, including 9 figures