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Showing 1–6 of 6 results
Advanced filters: Author: Gui-Geng Liu Clear advanced filters

  • One of the main limitations of valleytronics is the backscattering-induced depolarization. Here, by engineering the valley Dirac masses in momentum and real spaces, authors theoretically and experimentally demonstrate chiral valley edge states with backscattering-free propagation and polarized valleys.

    • Jian-Wei Liu
    • Gui-Geng Liu
    • Jian-Wen Dong
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-10

  • Observing the photonic analogue of an unpaired Dirac point is hard, as it requires breaking the time-reversal symmetry. Here, the authors use gyromagnetic materials to do that, and thus succeed in observing an unpaired Dirac point in a planar photonic crystal operating at microwave frequencies.

    • Gui-Geng Liu
    • Peiheng Zhou
    • Baile Zhang
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • Magnetically tunable three-dimensional photonic crystals are used to achieve the experimental demonstration of Chern vectors and their topological surface states, showing the Chern vector to be an intrinsic bulk topological invariant in three-dimensional topological materials.

    • Gui-Geng Liu
    • Zhen Gao
    • Baile Zhang
    Research
    Nature
    Volume: 609, P: 925-930

  • Here, the authors report the experimental realization of a 3D Wannier-type photonic HOTI, which hosts coexisting self-guided topological surface, hinge, and corner states in a single 3D tight binding-like photonic crystal.

    • Ziyao Wang
    • Yan Meng
    • Zhen Gao
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Here the authors report the first experimental observation of topological antichiral surface states by constructing a three-dimensional modified Haldane model in a magnetic Weyl photonic crystal.

    • Xiang Xi
    • Bei Yan
    • Zhen Gao
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8