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Showing 1–4 of 4 results
Advanced filters: Author: Costel R. Rotundu Clear advanced filters

  • The spin-orbit interaction is central to the defining characteristics of topological insulators. Here, Jozwiaket al. report a spin-polarized unoccupied surface resonance coevolving with topological surface states from a pair of Rashba-like states through spin-orbit induced band inversion.

    • Chris Jozwiak
    • Jonathan A. Sobota
    • Alessandra Lanzara
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • The study finds coherent spin waves, generated by ultrafast laser pulses, drive antiferromagnetic domain walls (DWs) in Sr2Cu3O4Cl2 at a record  ~50 km/s. DW propagation direction is controllable via laser helicity and DW winding number, explained by in-plane magnon mode-induced dynamics unique to easy-plane anisotropy magnets.

    • Kyle L. Seyler
    • Hantao Zhang
    • David Hsieh
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • In a topological insulator, the surface-state electron spins are ‘locked’ to their direction of travel. But when an electron is kicked out by a photon through the photoelectric effect, the spin polarization is not necessarily conserved. In fact, the ejected spins can be completely manipulated in three dimensions by the incident photons.

    • Chris Jozwiak
    • Cheol-Hwan Park
    • Alessandra Lanzara
    Research
    Nature Physics
    Volume: 9, P: 293-298