Electron gas at the interface between two antiferromagnetic insulating manganites

Details Electron gas at the interface between two antiferromagnetic insulating manganites Electron gas at the interface between two antiferromagnetic insulating manganites

2008-04-22

arxiv.org/abs/0804.3454v1

Phys. Rev. B 78, 024415 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, including 9 figures

Scientific paper

10.1103/PhysRevB.78.024415

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.

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