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Showing 1–6 of 6 results
Advanced filters: Author: Ralph Claessen Clear advanced filters

  • In frustrated magnets geometric constraints are expected to prevent any magnetic ordering. In this work, normally non-magnetic atoms on a silicon surface display an ordered state despite geometric frustration. This offers new ways of controlling magnetism on surfaces.

    • Gang Li
    • Philipp Höpfner
    • Werner Hanke
    Research
    Nature Communications
    Volume: 4, P: 1-6

  • Edge states of QSHIs hold promise for future technologies due to protection against backscattering. This work observes that intraband backscattering remains allowed for nonmonotonic edge bands, revealing critical aspects of edge state stability.

    • Jonas Erhardt
    • Mattia Iannetti
    • Ralph Claessen
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-7

  • Interacting electrons that are confined to move in a one-dimensional structure do not simply jam together like cars in rush hour. Inelastic X-ray scattering shows that the electrons act as if they split into separate fractional entities. See Letter p.82

    • Ralph Claessen
    News & Views
    Nature
    Volume: 485, P: 46-47

  • Here, the authors report the observation of room temperature excitons in a single layer of bismuth atoms epitaxially grown on a SiC substrate - a material of non-trivial global topology - with excitonic and topological physics deriving from the very same electronic structure.

    • Marcin Syperek
    • Raul Stühler
    • Christian Schneider
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • Atomic monolayers of large-gap quantum spin Hall insulators are challenging to synthesize. Here, the authors realize massive Dirac fermions emerging from Bloch wave-function interference on a triangular lattice and achieve topologically non-trivial domains with unprecedented spatial extension.

    • Maximilian Bauernfeind
    • Jonas Erhardt
    • Giorgio Sangiovanni
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8