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Showing 1–7 of 7 results
Advanced filters: Author: Andrea Perucchi Clear advanced filters

  • Here the authors show that the dipole-active phonon resonance of semiconducting nanocrystals can be hybridized by a strongly concentrated terahertz vacuum field of a plasmonic nanocavity, thus achieving strong plasmon–phonon coupling even in the absence of direct terahertz illumination.

    • Xin Jin
    • Andrea Cerea
    • Luca Razzari
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-6

  • Superconductivity is studied in the molecular solid K3C60 when it is pressurized and illuminated with short laser pulses. Similarities with the non-illuminated case show that superconductivity exists at higher temperatures than previously thought.

    • A. Cantaluppi
    • M. Buzzi
    • A. Cavalleri
    Research
    Nature Physics
    Volume: 14, P: 837-841

  • The terahertz response of topological insulator surface states, in which relativistic electrons are protected from backscattering, possesses potential optic and plasmonic applications. Here, the authors demonstrate a nonlinear absorption response of Bi2Se3to terahertz electric fields.

    • Flavio Giorgianni
    • Enrica Chiadroni
    • Stefano Lupi
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-6

  • Photo-excitation in strongly correlated materials is usually modelled as an increase of electronic energy that is then transferred to other degrees of freedom. Contrarily, Novelli et al.show that in a charge-transfer insulator, sub-gap excitation forms electrons that are suddenly dressed by the boson field.

    • Fabio Novelli
    • Giulio De Filippis
    • Daniele Fausti
    Research
    Nature Communications
    Volume: 5, P: 1-8

  • Here, the authors investigate the optical response of bulk black phosphorus to mid-infrared pulses, and find that while above-gap excitation leads to a broadband light-induced transparency, sub-gap pulses drive an anomalous response, peaked at the single-layer exciton resonance.

    • Angela Montanaro
    • Francesca Giusti
    • Daniele Fausti
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • By exciting high-temperature K3C60 with mid-infrared pulses, a large increase in carrier mobility is obtained, accompanied by the opening of a gap in the optical conductivity; these same signatures are observed at equilibrium when cooling K3C60 below the superconducting transition temperature of 20 kelvin, which could be an indication of light-induced high-temperature superconductivity.

    • M. Mitrano
    • A. Cantaluppi
    • A. Cavalleri
    Research
    Nature
    Volume: 530, P: 461-464