Microstructure effects on the phase transition behavior of a prototypical quantum material.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
21 Jun 2022
21 Jun 2022
Historique:
received:
28
01
2022
accepted:
30
05
2022
entrez:
21
6
2022
pubmed:
22
6
2022
medline:
22
6
2022
Statut:
epublish
Résumé
Materials with insulator-metal transitions promise advanced functionalities for future information technology. Patterning on the microscale is key for miniaturized functional devices, but material properties may vary spatially across microstructures. Characterization of these miniaturized devices requires electronic structure probes with sufficient spatial resolution to understand the influence of structure size and shape on functional properties. The present study demonstrates the use of imaging soft X-ray absorption spectroscopy with a spatial resolution better than 2 [Formula: see text]m to study the insulator-metal transition in vanadium dioxide thin-film microstructures. This novel technique reveals that the transition temperature for the conversion from insulating to metallic vanadium dioxide is lowered by 1.2 K ± 0.4 K close to the structure edges compared to the center. Facilitated strain release during the phase transition is discussed as origin of the observed behavior. The experimental approach enables a detailed understanding of how the electronic properties of quantum materials depend on their patterning at the micrometer scale.
Identifiants
pubmed: 35729245
doi: 10.1038/s41598-022-13872-0
pii: 10.1038/s41598-022-13872-0
pmc: PMC9213476
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
10464Subventions
Organisme : Helmholtz-Gemeinschaft
ID : VH-NG-1105
Organisme : H2020 Marie Sklodowska-Curie Actions
ID : 701647
Informations de copyright
© 2022. The Author(s).
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