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arXiv · 0804.4023

Two Dimensional Spin-Polarized Electron Gas at the Oxide Interfaces

B. R. K. Nanda·S. Satpathy
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Abstract

The formation of a novel spin-polarized 2D electron gas at the LaMnO$_3$ monolayer embedded in SrMnO$_3$ is predicted from the first-principles density-functional calculations. The La (d) electrons become confined in the direction normal to the interface in the potential well of the La layer, serving as a positively-charged layer of electron donors. These electrons mediate a ferromagnetic alignment of the Mn t$_{2g}$ spins near the interface via the Anderson-Hasegawa double exchange and become, in turn, spin-polarized due to the internal magnetic fields of the Mn moments.

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B. R. K. Nanda, S. Satpathy. 2008-04-24. Two Dimensional Spin-Polarized Electron Gas at the Oxide Interfaces. https://doi.org/10.1103/physrevlett.101.127201

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