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Simultaneous Structural and Electronic Transitions in Epitaxial VO2/TiO2(001)

Recent reports have identified new metaphases of VO2 with strain and/or doping, suggesting the structural phase transition and the metal-to-insulator transition might be decoupled. Using epitaxially strained VO2/TiO2 (001) thin films, which display a bulklike abrupt metal-to-insulator transition and...

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Published in:Physical review letters 2020-05, Vol.124 (19)
Main Authors: Paez, Galo J, Singh, Christopher N, Wahila, Matthew J, Tirpak, Keith E, Quackenbush, Nicholas F, Sallis, Shawn, Paik, Hanjong, Liang, Yufeng, Schlom, Darrell G, Lee, Tien-Lin, Schlueter, Christoph, Lee, Wei-Cheng, Piper, Louis F J
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container_issue 19
container_start_page
container_title Physical review letters
container_volume 124
creator Paez, Galo J
Singh, Christopher N
Wahila, Matthew J
Tirpak, Keith E
Quackenbush, Nicholas F
Sallis, Shawn
Paik, Hanjong
Liang, Yufeng
Schlom, Darrell G
Lee, Tien-Lin
Schlueter, Christoph
Lee, Wei-Cheng
Piper, Louis F J
description Recent reports have identified new metaphases of VO2 with strain and/or doping, suggesting the structural phase transition and the metal-to-insulator transition might be decoupled. Using epitaxially strained VO2/TiO2 (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).
doi_str_mv 10.1103/PhysRevLett.124.196402
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Phase transitions
Photoelectrons
Standing waves
Thin films
Titanium dioxide
Vanadium oxides
title Simultaneous Structural and Electronic Transitions in Epitaxial VO2/TiO2(001)
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