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Monoclinic and Correlated Metal Phase inVO2as Evidence of the Mott Transition: Coherent Phonon Analysis
Open accessAbstract
In femtosecond pump-probe measurements, the appearance of coherent phonon oscillations at 4.5 and 6.0 THz indicating the rutile metal phase of VO2 does not occur simultaneously with the first-order metal-insulator transition (MIT) near 68 degrees C. The monoclinic and correlated metal (MCM) phase between the MIT and the structural phase transition (SPT) is generated by a photoassisted hole excitation, which is evidence of the Mott transition. The SPT between the MCM phase and the rutile metal phase occurs due to subsequent Joule heating. The MCM phase can be regarded as an intermediate nonequilibrium state.
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Cited by
Mott Transition in VO 2 Revealed by Infrared Spectroscopy and Nano-Imaging
Qazilbash, M. M., Brehm, M., Chae, B.-G., Ho, P.-C., Andreev, G. O., Kim, B.-J., Yun, S. J., Balatsky, A. V., Maple, M. B., Keilmann, F., et al. (2007) · Science · doi:10.1126/science.1150124 · Cited by 1,539
Self-citationOxide 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
Metadata
- Authors
- Kim, H.-T., Lee, Y. W., Kim, B.-J., Chae, B.-G., Yun, S. J., Kang, K.-Y., Han, K.-J., Yee, K.-J., & Lim, Y.-S.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2006-12-26
- Volume
- 97
- Issue
- 26
- Pages
- 266401-266401
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2057624834
- Cited by
- 333
- References
- 0
- FWCI
- 14.90
- Type
- journal article
- Language
- en
- Open access
- green
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- Kim, H.-T., Lee, Y. W., Kim, B.-J., Chae, B.-G., Yun, S. J., Kang, K.-Y., Han, K.-J., Yee, K.-J., & Lim, Y.-S. (2006). Monoclinic and Correlated Metal Phase inVO2as Evidence of the Mott Transition: Coherent Phonon Analysis. Physical Review Letters. https://doi.org/10.1103/physrevlett.97.266401
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