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Showing 1–4 of 4 results
Advanced filters: Author: Sheikh Rubaiat Ul Haque Clear advanced filters

  • Photonic time crystal refers to a material whose dielectric properties oscillate in time. Here the authors theoretically show such behaviour in the excitonic insulator candidate Ta2NiSe5 under optical excitation and use it to explain the enhanced THz reflectivity recently observed in pump-probe experiments

    • Marios H. Michael
    • Sheikh Rubaiat Ul Haque
    • Eugene Demler
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-10

  • Ultrashort laser light–matter interactions can create unique virtual quantum states. Researchers have now revealed this phenomenon in solution-grown semiconductor nanoplatelets using visible light.

    • Sheikh Rubaiat Ul Haque
    • Yuki Kobayashi
    News & Views
    Nature Photonics
    Volume: 18, P: 1002-1003

  • Employing nonlinear, time-resolved terahertz spectroscopy to study condensate dynamics on Ta2NiSe5—a narrow-bandgap semiconductor and putative excitonic insulator—the authors reveal enhanced terahertz reflectivity upon photoexcitation and condensation-like temperature dependence below the structural transition critical temperature.

    • Sheikh Rubaiat Ul Haque
    • Marios H. Michael
    • Richard D. Averitt
    Research
    Nature Materials
    Volume: 23, P: 796-802

  • High-harmonic spectroscopy on solids is an ultrafast all-optical technique to study the structure and dynamics of materials. This Review discusses areas of condensed-matter physics where this technique can provide particular insight.

    • Christian Heide
    • Yuki Kobayashi
    • Shambhu Ghimire
    Reviews
    Nature Physics
    Volume: 20, P: 1546-1557