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Showing 1–5 of 5 results
Advanced filters: Author: Kasper Grove-Rasmussen Clear advanced filters

  • The authors experimentally study a chain of superconducting islands (SI) and quantum dots (QD), where a Bogoliubov quasiparticle occupies each SI. They demonstrate correlations between the quasiparticles in each SI mediated by a single spin on the QD, known as an “over-screened" doublet state of the QD.

    • Juan Carlos Estrada Saldaña
    • Alexandros Vekris
    • Jesper Nygård
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-7

  • Yu–Shiba–Rusinov subgap excitations are associated with a range of interesting physics such as Majorana fermions, and so it is important to understand their intrinsic features. Here, the authors investigate the temperature dependence of the Yu–Shiba–Rusinov states in a hybrid nanowire–quantum dot system, demonstrating that the shift in energy does not follow the behaviour predicted by current models.

    • Juan Carlos Estrada Saldaña
    • Alexandros Vekris
    • Jesper Nygård
    ResearchOpen Access
    Communications Physics
    Volume: 3, P: 1-11

  • The fate of Yu-Shiba-Rusinov states in the presence of a strong Coulomb repulsion in a superconductor remains unknown. Here, the authors couple a quantum dot to a superconducting island with a tunable Coulomb repulsion, where they find a singlet many-body state which, by a strong Coulomb repulsion, changes to a two-body state.

    • Juan Carlos Estrada Saldaña
    • Alexandros Vekris
    • Jesper Nygård
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8

  • Semiconductor–superconductor hybrids are used for realizing complex quantum phenomena but are limited in the accessible magnetic field and temperature range. Now, hybrid devices made from InAs nanowires and epitaxially matched, single-crystal, atomically flat Pb films present superior characteristics, doubling the available parameter space.

    • Thomas Kanne
    • Mikelis Marnauza
    • Jesper Nygård
    Research
    Nature Nanotechnology
    Volume: 16, P: 776-781