We establish a time-domain hierarchy between structural and electronic effects in the model strongly correlated system VO2. We find that the insulator-to-metal transition is driven directly by structural change rather than by electron-electron correlations.
© 2004 Optical Society of America
(300.0300) Spectroscopy : Spectroscopy
(300.6420) Spectroscopy : Spectroscopy, nonlinear
(320.0320) Ultrafast optics : Ultrafast optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
A. Cavalleri, T. Dekorsy, H. Chong, J. C. Kieffer, and R. W. Schoenlein, "Phase transition in VO2: Time-domain assignment of cause and effect in presence of strong correlations," in 14th International Conference on Ultrafast Phenomena, Technical Digest (CD) (Optical Society of America, 2004), paper TuE2.
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