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Showing 1–8 of 8 results
Advanced filters: Author: Rok Žitko Clear advanced filters

  • A periodic modulation of the interaction strength in atomic condensates can generate diverse dynamical scenarios, including ‘matter-wave’ jet emission. This combined experimental and theoretical work constructs an extended phase diagram, showcasing the emergence of jets with incommensurate velocities from a quasi-1D condensate driven with a single frequency.

    • Tadej Mežnaršič
    • Rok Žitko
    • Peter Jeglič
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-6

  • 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

  • Semiconductor qubits can benefit from existing industrial methods, but there are challenges in coupling qubits together. A hybrid superconductor–semiconductor qubit that couples to superconducting qubit devices may overcome these issues.

    • Marta Pita-Vidal
    • Arno Bargerbos
    • Christian Kraglund Andersen
    Research
    Nature Physics
    Volume: 19, P: 1110-1115

  • Yu-Shiba-Rusinov (YSR) states result from the exchange coupling between a localized magnetic moment and a superconductor. Traditionally, the YSR states have been studied for magnetic atoms. For molecular magnets with extended ligand spin, the entanglement of spin and ligand orbital gives rise to new forms of YSR excitations. Here, Xia et al uncovered spin-orbital YSR states in an unpaired ligand spin in the molecular magnet Tb2Pc3 on Pb.

    • Hui-Nan Xia
    • Emi Minamitani
    • Ying-Shuang Fu
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • 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

  • In the charge-density wave state of tantalum sulfide, tantalum atoms group into a Star-of-David arrangement. Experiments show that the polaron spins associated with these atomic clusters can form a quantum spin liquid.

    • Martin Klanjšek
    • Andrej Zorko
    • Denis Arčon
    Research
    Nature Physics
    Volume: 13, P: 1130-1134

  • Single molecules on metal surfaces are paradigmatic systems for the study of many-body phenomena. Here, the authors show that several spectroscopic experiments on iron phthalocyanine on Au(111) surface can be described in a unified way in terms of a strongly interacting topologically non-trivial (non-Landau) Fermi liquid.

    • R. Žitko
    • G. G. Blesio
    • A. A. Aligia
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9