@unpublished{Mayer2015Tunne-31034,
  year={2015},
  title={Tunneling Breakdown of a Strongly Correlated Insulating State in VO<sub>2</sub> Induced by Intense Multi-Terahertz Excitation},
  author={Mayer, Bernhard and Schmidt, Christian and Grupp, Alexander and Bühler, Johannes and Oelmann, Jannis and Marvel, Robert E. and Haglund, Richard F. and Oka, Takashi and Brida, Daniele and Leitenstorfer, Alfred and Pashkin, Alexej}
}

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    <dc:contributor>Pashkin, Alexej</dc:contributor>
    <dc:contributor>Marvel, Robert E.</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2015-05-26T12:45:49Z</dc:date>
    <dc:contributor>Schmidt, Christian</dc:contributor>
    <dcterms:abstract xml:lang="eng">We directly trace the near- and mid-infrared transmission change of a VO2 thin film during an ultrafast insulator-to-metal transition triggered by high-field multi-terahertz transients. Non-thermal switching into a metastable metallic state is governed solely by the amplitude of the applied terahertz field. In contrast to resonant excitation below the threshold fluence, no signatures of excitonic self-trapping are observed. Our findings are consistent with the generation of spatially separated charge pairs and a cooperative transition into a delocalized metallic state by THz field-induced tunneling. The tunneling process is a condensed-matter analogue of the Schwinger effect in nonlinear quantum electrodynamics. We find good agreement with the pair production formula by replacing the Compton wavelength with an electronic correlation length of 2.1 A.</dcterms:abstract>
    <dcterms:issued>2015</dcterms:issued>
    <dc:creator>Schmidt, Christian</dc:creator>
    <dcterms:title>Tunneling Breakdown of a Strongly Correlated Insulating State in VO&lt;sub&gt;2&lt;/sub&gt; Induced by Intense Multi-Terahertz Excitation</dcterms:title>
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    <dc:contributor>Grupp, Alexander</dc:contributor>
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    <dc:contributor>Oelmann, Jannis</dc:contributor>
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    <dc:contributor>Oka, Takashi</dc:contributor>
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