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Evidence for a structurally-driven insulator-to-metal transition inVO2: A view from the ultrafast timescale
Open accessAbstract
We apply ultrafast spectroscopy to establish a time-domain hierarchy between structural and electronic effects in a strongly correlated electron system. We discuss the case of the model system ${\mathrm{VO}}_{2}$, a prototypical nonmagnetic compound that exhibits cell doubling, charge localization, and a metal-insulator transition below 340 K. We initiate the formation of the metallic phase by prompt hole photo-doping into the valence band of the low-$T$ insulator. The insulator-to-metal transition is, however, delayed with respect to hole injection, exhibiting a bottleneck time scale, associated with the phonon connecting the two crystallographic phases. This structural bottleneck is observed despite faster depletion of the $d$ bands and is indicative of important bandlike character for this controversial insulator.
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Cited by
Oxide Electronics Utilizing Ultrafast Metal-Insulator Transitions
Yang, Z., Ko, C., & Ramanathan, S. (2011) · Annual Review of Materials Research · doi:10.1146/annurev-matsci-062910-100347 · Cited by 1,020
Memory effects in complex materials and nanoscale systems
Pershin, Y. V., & Di Ventra, M. (2011) · Advances In Physics · doi:10.1080/00018732.2010.544961 · Cited by 823
Jager, M. F., Ott, C., Kraus, P. M., Kaplan, C. J., Pouse, W., Marvel, R. E., Haglund, R. F., Neumark, D. M., & Leone, S. R. (2017) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1707602114 · Cited by 164
Multi-mode excitation drives disorder during the ultrafast melting of a C4-symmetry-broken phase
Perez-Salinas, D., Johnson, A. S., Prabhakaran, D., & Wall, S. (2022) · Nature Communications · doi:10.1038/s41467-021-27819-y · Cited by 17
Metadata
- Authors
- Cavalleri, A., Dekorsy, T., Chong, H. H. W., Kieffer, J. C., & Schoenlein, R. W.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2004-10-13
- Volume
- 70
- Issue
- 16
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2137705584
- Cited by
- 709
- References
- 0
- FWCI
- 20.07
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Evidence for a structurally-driven insulator-to-metal transition inVO2: A view from the ultrafast timescale. https://app.cochat.ai/papers/10.1103/physrevb.70.161102
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- Cavalleri, A., Dekorsy, T., Chong, H. H. W., Kieffer, J. C., & Schoenlein, R. W. (2004). Evidence for a structurally-driven insulator-to-metal transition inVO2: A view from the ultrafast timescale. Physical Review B. https://doi.org/10.1103/physrevb.70.161102
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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