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Ultrafast insulator-metal phase transition in VO2 studied by multiterahertz spectroscopy

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Pashkin, A. ; Kübler, C. ; Ehrke, H. ; Lopez, R. ; Halabica, A. ; Haglund Jr., R. F. ; Huber, Rupert ; Leitenstorfer, A.
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Date of publication of this fulltext: 15 Oct 2014 11:25


The ultrafast photoinduced insulator-metal transition in VO2 is studied at different temperatures and excitation fluences using multi-THz probe pulses. The spectrally resolved midinfrared response allows us to trace separately the dynamics of lattice and electronic degrees of freedom with a time resolution of 40 fs. The critical fluence of the optical pump pulse, which drives the system into a ...


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