Interfaces in perovskite heterostructures |
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Authors: | Hans M Christen Dae Ho Kim Christopher M Rouleau |
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Institution: | (1) Materials Science and Technology Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA |
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Abstract: | Recent advances in film synthesis have made it possible to investigate the properties of well-controlled interfaces in perovskite
metal-oxides. A review of published experimental data and computational results indicate that so far most interfaces that
have been analyzed in ferroelectric materials—while necessary to impose large lattice strain on the polar material—contribute
little to the ferroelectricity and may instead be detrimental to the desired properties. In contrast, a very different situation
arises at interfaces that show changes in the electronic configuration as a consequence of a compositional discontinuity.
Data is shown for LaMnO3/SrTiO3 superlattices as an example of electronic effects that produce enhanced properties, further illustrating the richness of
interfacial properties that can be obtained at interfaces (as shown in numerous published results for different but related
interfaces). |
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Keywords: | PACS" target="_blank">PACS 75 70 Cn 73 20 -r 77 90 +k |
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