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arXiv · 0810.0798

Quantum Wells in Polar-Nonpolar Oxide Heterojunction Systems

C. -C Joseph Wang·Bhagawan Sahu·Hongki Min·Wei-Cheng Lee·Allan H. MacDonald
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Abstract

We address the electronic structure of quantum wells in polar-nonpolar oxide heterojunction systems focusing on the case of non-polar BaVO$_3$ wells surrounded by polar LaTiO$_3$ barriers. Our discussion is based on a density functional description using the local spin density approximation with local correlation corrections (LSDA+U). We conclude that a variety of quite different two-dimensional electron systems can occur at interfaces between insulating materials depending on band line-ups and on the geometrical arrangement of polarity discontinuities.

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C. -C Joseph Wang, Bhagawan Sahu, Hongki Min, Wei-Cheng Lee, Allan H. MacDonald. 2009-05-19. Quantum Wells in Polar-Nonpolar Oxide Heterojunction Systems. https://doi.org/10.1103/physrevb.79.115408

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