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Showing 1–4 of 4 results
Advanced filters: Author: Emil J. Bergholtz Clear advanced filters

  • Quantum anomalous Hall crystals (QAHCs) combine the zero-field quantum Hall effect with spontaneously broken discrete translation symmetry. Here, the authors use exact diagonalization to demonstrate the existence of stable QAHCs arising from 2/3-filled moiré bands with Chern number C = 2.

    • Raul Perea-Causin
    • Hui Liu
    • Emil J. Bergholtz
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-7

  • Higher-order topologically protected states, localized to corners of photonic waveguide arrays, are experimentally demonstrated.

    • Ashraf El Hassan
    • Flore K. Kunst
    • Mohamed Bourennane
    Research
    Nature Photonics
    Volume: 13, P: 697-700

  • Parafermions hold promise as building blocks for topological quantum computers but have remained experimentally elusive. Here, the authors employ numerical calculations to demonstrate that parafermion excitations can emerge in partially filled moiré minibands of twisted multilayer graphene systems.

    • Hui Liu
    • Raul Perea-Causin
    • Emil J. Bergholtz
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-7

  • A diverse, multidisciplinary panel of 386 experts in COVID-19 response from 112 countries provides health and social policy actions to address inadequacies in the pandemic response and help to bring this public health threat to an end.

    • Jeffrey V. Lazarus
    • Diana Romero
    • Anne Øvrehus
    ResearchOpen Access
    Nature
    Volume: 611, P: 332-345