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arXiv · 0710.2174

Polar Discontinuity Doping of the LaVO_3/SrTiO_3 Interface

Y. Hotta·T. Susaki·H. Y. Hwang
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Abstract

We have investigated the transport properties of LaVO_3/SrTiO_3 Mott insulator/band insulator heterointerfaces for various configurations. The (001)-oriented n-type VO_2/LaO/TiO_2 polar discontinuity is conducting, exhibiting a LaVO_3 thickness-dependent metal-insulator transition and low temperature anomalous Hall effect. The (001) p-type VO_2/SrO/TiO_2 interface, formed by inserting a single layer of bulk metallic SrVO_3 or SrO, drives the interface insulating. The (110) heterointerface is also insulating, indicating interface conduction arising from electronic reconstructions.

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Y. Hotta, T. Susaki, H. Y. Hwang. 2007-10-11. Polar Discontinuity Doping of the LaVO_3/SrTiO_3 Interface. https://doi.org/10.1103/physrevlett.99.236805

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