AI Article Synopsis
- The oxygen octahedral framework in perovskite oxide heterostructures plays a crucial role in determining their functional properties, but it usually remains fixed after synthesis, limiting their adaptability.
- Recent research shows that this framework can be dynamically adjusted using an electric field, especially by manipulating oxygen vacancies.
- Experiments on WO heterostructures reveal that high vacancy concentrations lead to significant changes in electronic properties, providing a framework for developing systems with tunable features.
Article Abstract
Control over the oxygen octahedral framework is widely recognized as key to the design of functional properties in perovskite oxide heterostructures. Although the oxygen octahedral framework can be manipulated during synthesis, the as-grown oxygen octahedra generally remain fixed, preventing the development of adaptive behavior in electronic and ionotronic systems. Here, it is demonstrated that the oxygen octahedral framework can be dynamically and reversibly manipulated by an electric field through the coupling with oxygen vacancies. Studying model WO heterostructures during ionic liquid gating with a combination of in situ X-ray scattering and spectroscopy, it is shown that large changes in electronic properties can arise due to the increased flexibility of the octahedral network at high vacancy concentrations. The results describe a generic framework for the construction of dynamic systems and devices with an array of field-tunable properties.
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| http://dx.doi.org/10.1002/adma.201804775 | DOI Listing |
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