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Showing 1–4 of 4 results
Advanced filters: Author: Woun Kang Clear advanced filters

  • Multiple valleys in the electronic structure of certain crystal lattices could enable the development of so-called valleytronic devices. But to do so, the degeneracy of these valleys must be lifted. Measurements of the anisotropic magnetoelectric response of bismuth suggest that its three-fold valley degeneracy breaks spontaneously at low temperatures and high fields.

    • Zengwei Zhu
    • Aurélie Collaudin
    • Kamran Behnia
    Research
    Nature Physics
    Volume: 8, P: 89-94

  • The topology of the surface states of a bismuth crystal remains an ongoing debate. Here, the authors observe surface electric conductivity with a magnetic field parallel to the two-dimensional boundary between the three-dimensional bismuth crystal and vacuum, but this effect is absent in antimony crystals indicating a link between band symmetry and boundary conductance.

    • Woun Kang
    • Felix Spathelf
    • Kamran Behnia
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-10

  • Clear electronic transport signatures of topological nodal-line semimetals have been lacking due to their complex electronic structure and the presence of topologically trivial states. Kim et al. demonstrate that the quantum transport response in slightly hole-doped SrAs3 is dominated by nodal-line fermions.

    • Hoil Kim
    • Jong Mok Ok
    • Jun Sung Kim
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8