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Showing 1–7 of 7 results
Advanced filters: Author: Paolo Sessi Clear advanced filters

  • The spin texture of a topological insulator is defined by spin-momentum locked Dirac fermions in its non-trivial surface states. Here, Sessi et al. show how the spin texture of Bi2Te3may be modified by extremely dilute magnetic adatoms, with magnetic order mediated via the RKKY interaction.

    • Paolo Sessi
    • Felix Reis
    • Matthias Bode
    Research
    Nature Communications
    Volume: 5, P: 1-8

  • Magnetic impurities break time reversal symmetry in topological insulators, but there has been disagreement between theory and experiment. Here, the authors study the response of topological states to magnetic dopants at the atomic level and show that, contrary to what generally believed, magnetic order and gapless states can coexist.

    • Paolo Sessi
    • Rudro R. Biswas
    • Alexander V. Balatsky
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-6

  • The implementation of topological insulators in spintronics requires the control of the topological spin texture. Here, the authors show that noble metal atoms added to the surface enable this controllability by altering the magnetic anisotropy and energy level alignment.

    • Paolo Sessi
    • Vyacheslav M. Silkin
    • Matthias Bode
    Research
    Nature Communications
    Volume: 6, P: 1-6

  • The impact of local magnetic impurities on superconducting order parameter remains largely unexplored. Here, the authors visualize the effect of different magnetic perturbations on a superconductor, unveiling a rich correlation of the interplay between quantum spins and superconductivity in different spectroscopic regimes.

    • Felix Küster
    • Ana M. Montero
    • Paolo Sessi
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-10