Intercalation-Induced Exfoliation and Thickness-Modulated Electronic Structure of a Layered Ternary Vanadium Oxide
| Autor: | Thomas M. Tolhurst, Justin L. Andrews, Sarbajit Banerjee, Luis R. De Jesus, Peter M. Marley, Alexander Moewes |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Electronic correlation Band gap General Chemical Engineering Intercalation (chemistry) Nanotechnology 02 engineering and technology General Chemistry Electronic structure Electron 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Vanadium oxide 0104 chemical sciences Chemical physics Lattice (order) Materials Chemistry 0210 nano-technology Ternary operation |
| Zdroj: | Chemistry of Materials. 29:3285-3294 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/acs.chemmater.7b00597 |
| Popis: | Solid-state compounds wherein electrons cannot be described as noninteracting particles and instead show strongly correlated behavior are of interest both as systems manifesting novel quantum chemical phenomena as well as for electronic device applications. In the absence of predictive theoretical descriptors, modulation of the properties of these compounds tends to be challenging, and generalizable strategies for modulating closely coupled lattice, orbital, and spin degrees of freedom are exceedingly sparse. Here, it is shown that exfoliation mediated by cation intercalation can serve as a powerful means of modulating the electronic structure of layered correlated materials. Using a strongly correlated and charge-ordered layered compound, δ-Sr0.50V2O5, as a model system, it is shown that the band gap can be drastically altered from ca. 1.07 to 2.32 eV and the electron correlation strength can be greatly modified by intercalation-driven exfoliation to 2D nanosheets upon elimination of structural coherence... |
| Databáze: | OpenAIRE |
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