@article{Leitenstorfer2009Ultra-58370,
  year={2009},
  doi={10.1002/pssc.200879860},
  title={Ultrafast insulator-metal transition in VO<sub>2</sub> : interplay between coherent lattice motion and electronic correlations},
  number={1},
  volume={6},
  issn={1862-6351},
  journal={Physica Status Solidi (C) - Current Topics in Solid State Physics},
  pages={149--151},
  author={Leitenstorfer, Alfred and Kübler, Carl and Lopez, Rene and Halabica, Andrej and Haglund, Richard F. and Huber, Rupert}
}

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    <dc:contributor>Leitenstorfer, Alfred</dc:contributor>
    <dc:creator>Haglund, Richard F.</dc:creator>
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    <dc:creator>Halabica, Andrej</dc:creator>
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    <dcterms:title>Ultrafast insulator-metal transition in VO&lt;sub&gt;2&lt;/sub&gt; : interplay between coherent lattice motion and electronic correlations</dcterms:title>
    <dc:contributor>Huber, Rupert</dc:contributor>
    <dc:creator>Leitenstorfer, Alfred</dc:creator>
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    <dc:contributor>Halabica, Andrej</dc:contributor>
    <dcterms:abstract xml:lang="eng">The multi-THz conductivity of VO&lt;sub&gt;2&lt;/sub&gt; recorded during a photoinduced insulator-metal transition directly reveals the femtosecond dynamics of V-V stretching modes and electronic correlations. The strongly correlated character of the electronic system leads to a transient behaviour of the conductivity that cannot be understood in a Born-Oppenheimer picture. Based on our measurements with a time resolution of 12 fs and recent theoretical simulations for the electronic structure in steady state, we suggest a novel qualitative model for the non-thermal phase transition. The extremely high speed for the photoinduced phase transition is elegantly explained via a directed wave packet motion in the electronically excited state of the dimer that transfers the crystal structure of the insulator into the configuration of the metallic phase.</dcterms:abstract>
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