Strain-driven oxygen deficiency in self-assembled, nanostructured, composite oxide films.
basic_science · Level V
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- Record sourced from PubMed, PMID 21604819.
- Also identified by DOI 10.1021/nn2007628.
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Abstract
Oxide self-assembly is a promising bottom-up approach for fabricating new composite materials at the nanometer length scale. Tailoring the properties of such systems for a wide range of electronic applications depends on the fundamental understanding of the interfaces between the constituent phases. We show that the nanoscale strain modulation in self-assembled systems made of high-T(c) superconducting films containing nanocolumns of BaZrO(3) strongly affects the oxygen composition of the superconductor. Our findings explain the observed reduction of the superconducting critical temperature.