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Showing 1–3 of 3 results
Advanced filters: Author: Wolf Widdra Clear advanced filters

  • The unusual ordering of quasicrystals can be induced in thin films of a regular crystalline material; here a two-dimensional quasicrystal has been achieved by growing thin films of the perovskite barium titanate on an appropriately oriented crystalline platinum substrate.

    • Stefan Förster
    • Klaus Meinel
    • Wolf Widdra
    Research
    Nature
    Volume: 502, P: 215-218

  • Nickel Oxide (NiO) is a strongly correlated insulator with antiferromagnetic (AFM) ordering. Here, using pump-probe photoemission on NiO, the authors observe coherent terahertz oscillations in the photoemission signal, a signature of an in-gap state coupled to the AFM background.

    • Konrad Gillmeister
    • Denis Golež
    • Wolf Widdra
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • Quasicrystals are perfectly ordered crystals lacking translational symmetry. Here the authors unravel the formation mechanism of two-dimensional dodecagonal quasicrystals that arise from systematic modifications of a hexagonal honeycomb structure.

    • Sebastian Schenk
    • Oliver Krahn
    • Wolf Widdra
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7