AI Article Synopsis
- * Researchers used epitaxially strained VO₂/TiO₂ thin films to observe a clear metal-to-insulator transition alongside a structural change from rutile to monoclinic.
- * The study employed x-ray standing waves and hard x-ray photoelectron spectroscopy to reveal that these structural and electronic transitions happen simultaneously within a temperature range of ±1 K.
Article Abstract
Recent reports have identified new metaphases of VO_{2} with strain and/or doping, suggesting the structural phase transition and the metal-to-insulator transition might be decoupled. Using epitaxially strained VO_{2}/TiO_{2} (001) thin films, which display a bulklike abrupt metal-to-insulator transition and rutile to monoclinic transition structural phase transition, we employ x-ray standing waves combined with hard x-ray photoelectron spectroscopy to simultaneously measure the structural and electronic transitions. This x-ray standing waves study elegantly demonstrates the structural and electronic transitions occur concurrently within experimental limits (±1 K).
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| http://dx.doi.org/10.1103/PhysRevLett.124.196402 | DOI Listing |
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