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Showing 1–10 of 10 results
Advanced filters: Author: Juba Bouaziz Clear advanced filters

  • To determine the topological character of a magnetic structure, one has to rely on techniques based on spin magnetism. Here, the authors study chirality-driven orbital moment physics and propose a new experimental protocol for the identification of topological magnetic structure, based on soft X-ray spectroscopy.

    • Manuel dos Santos Dias
    • Juba Bouaziz
    • Samir Lounis
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-6

  • Clear understanding of the influence from material inhomogeneities and defects is one of the keys to achieve reliable Skyrmion based devices. Here the authors report their first principles studies on the interaction of single skyrmions with single-atom impurities and reveal its universal shape originated from the defect’s electron filling.

    • Imara Lima Fernandes
    • Juba Bouaziz
    • Samir Lounis
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-7

  • Transition-metal atoms deposited on metal surfaces exhibit zero bias anomalies, which have been detected by scanning tunnelling spectroscopy and are commonly attributed to Kondo resonances. Here the authors explain the zero-bias anomalies in terms of gapped spin-excitations in contrast to Kondo resonances, which reproduce well the experiments.

    • Juba Bouaziz
    • Filipe Souza Mendes Guimarães
    • Samir Lounis
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Despite the theoretical prediction of spinaron quasiparticles in artificial nanostructures, experimental evidence has not yet been seen. Now it has been observed in a hybrid system comprising Co atoms on a Cu(111) surface.

    • Felix Friedrich
    • Artem Odobesko
    • Matthias Bode
    Research
    Nature Physics
    Volume: 20, P: 28-33

  • Magnetic skyrmions are particle-like configurations which can emerge in the magnetization of materials possessing a chiral exchange interaction. Here, the authors demonstrate how spin-mixing magnetoresistance can allow for the reliable perpendicular detection of single nanoscale skyrmions in Pd/Fe/Ir(111) thin films.

    • Dax M. Crum
    • Mohammed Bouhassoune
    • Samir Lounis
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-8

  • Band degeneracies at the Fermi level in topological semimetals are sources of intriguing interference effects between electronic states around the degeneracy points. Here, the RE8CoX3 compounds, with RE = rare-earth and X = Al, Ga, or In, are proposed as realizations of ideal spinless Dirac semimetals hosting the fourfold degenerate band-crossing points without the spin degrees of freedom.

    • Manabu Sato
    • Juba Bouaziz
    • Motoaki Hirayama
    ResearchOpen Access
    Communications Materials
    Volume: 5, P: 1-10

  • Spintronic devices which are able to function at the terahertz frequency range are desired to help design quicker and more energy efficient apparatus. Here, the authors use simulations to demonstrate that the spin-orbit torque exhibits highly frequency dependent properties which can reveal the magnetisation dynamics of heavy metal/ferromagnetic heterostructures.

    • Filipe S. M. Guimarães
    • Juba Bouaziz
    • Samir Lounis
    ResearchOpen Access
    Communications Physics
    Volume: 3, P: 1-7