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  1. Feb 2, 2024Nonequilibrium phase transitions driven by light pulses represent a rapidly developing field in condensed matter physics. As one of the archetypal strongly correlated materials, vanadium dioxide (VO2) undergoes a structural phase transition (SPT) from a monoclinic (M1) to rutile (R) structure and an insulator-to-metal transition (IMT) either when heated above 340 K or when excited by an ...
  2. Here, we present a tensor network study of the light-induced phase transitions in subscript VO 2 \mathrm {VO}_ {2} roman_VO start_POSTSUBSCRIPT 2 end_POSTSUBSCRIPT based on a quasi-one-dimensional model with all the important ingredients—multi-orbital character, electron-lattice coupling, and electron-electron correlations—being included.
  3. bohrium.dp.tech

    Here, we present a tensor network study of the light-induced phase transitions in VO2 based on a quasi-one-dimensional model with all the important ingredients -- multi-orbital character, electron-lattice coupling, and electron-electron correlations -- being included.
  4. link.aps.org

    However, the topic of active polarizers is still much less explored. Here, we present composite plasmonic nanostructure consisting of vanadium dioxide that can dynamically modulate the polar-ization state of the reflected light through thermally-induced phase transition of vanadium dioxide. We designed
  5. sciencedirect.com

    In spite of numerous experimental and theoretical approaches, the problem of determining the phase transition (PT) mechanisms in VO 2 remains open [1], [2]. Vanadium dioxide exhibits a first-order insulator-to-metal (I-M) phase transition at a temperature about 340 K [3].
  6. bohrium.dp.tech

    Abstract:In vanadium dioxide, the interplay between coherent lattice transformation and electronic correlation drives an insulator-to-metal transition (IMT). This phase commutation can be triggered by temperature, pressure, doping or deposition of optical energy. Here we demonstrate that an atomically-strong terahertz electric field initiates a metastable ultrafast IMT in vanadium dioxide ...
  7. ieeexplore.ieee.org

    We demonstrate the first femtosecond-temporal and nanometer-spatial resolution imaging of a light induced phase transition, the insulator-to-metal transition of vanadium dioxide, using time-resolved resonant X-ray holography [1] at the Pohang Accelerator Laboratory X-ray free electron laser. Thin films of VO 2 deposited onto silicon nitride membranes were masked for holography [2] and heated ...

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