Journal article

Enhanced photosusceptibility near Tc for the light-induced insulator-to-metal phase transition in vanadium dioxide.

Abstract:: We use optical-pump terahertz-probe spectroscopy to investigate the near-threshold behavior of the photoinduced insulator-to-metal (IM) transition in vanadium dioxide thin films. Upon approaching Tc a reduction in the fluence required to drive the IM transition is observed, consistent with a softening of the insulating state due to an increasing metallic volume fraction (below the percolation limit). This phase coexistence facilitates the growth of a homogeneous metallic conducting phase following superheating via photoexcitation. A simple dynamic model using Bruggeman effective medium theory describes the observed initial condition sensitivity.

Publication status:: Published

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APA Style

Hilton, D., Prasankumar, R., Fourmaux, S., Cavalleri, A., Brassard, D., Khakani, E., Kieffer, J., Taylor, A., & Averitt, R. (2007). Enhanced photosusceptibility near Tc for the light-induced insulator-to-metal phase transition in vanadium dioxide. Physical Review Letters, 99(22), 226401.

MLA Style

Hilton, D., et al. “Enhanced Photosusceptibility near Tc for the Light-Induced Insulator-to-Metal Phase Transition in Vanadium Dioxide.” Physical Review Letters, vol. 99, no. 22, 2007, p. 226401.

Chicago Style

Hilton, D, R Prasankumar, S Fourmaux, A Cavalleri, D Brassard, E Khakani, J Kieffer, A Taylor, and R Averitt. 2007. “Enhanced Photosusceptibility near Tc for the Light-Induced Insulator-to-Metal Phase Transition in Vanadium Dioxide.” Physical Review Letters 99 (22): 226401.
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Publisher copy:: 10.1103/physrevlett.99.226401

Authors

+ Hilton, D More by this author

Role:: Author

+ Prasankumar, R More by this author

Role:: Author

+ Fourmaux, S More by this author

Role:: Author

+ Cavalleri, A More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Atomic & Laser Physics
Role:: Author

+ Brassard, D More by this author

Role:: Author

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Journal:: Physical Review Letters More from this journal
Volume:: 99
Issue:: 22
Pages:: 226401
Publication date:: 2007-11-01
DOI:: 10.1103/physrevlett.99.226401
EISSN:: 1079-7114
ISSN:: 0031-9007

Language:: English
Pubs id:: pubs:14152
UUID:: uuid:125ed3ca-254f-4773-ac06-aacd7aed1e9a
Local pid:: pubs:14152
Source identifiers:: 14152
Deposit date:: 2012-12-19

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Copyright date:: 2007

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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