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Showing 1–11 of 11 results
Advanced filters: Author: F. Giazotto Clear advanced filters

  • Diodes are characterized by mono-directional flow of current, yet this simplicity belies their critical importance in electronics and optics. Here, Strambini et al demonstrate a superconducting quasi-particle equivalent, achieved by the use of a thin ferromagnetic insulator.

    • E. Strambini
    • M. Spies
    • F. Giazotto
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • Physical details of a Josephson junction may drastically modify the properties of supercurrent. Here, the authors observe a colossal enhancement of the critical supercurrent in a Josephson junction subject to a perpendicular magnetic field, indicating topological phase transitions.

    • J. Tiira
    • E. Strambini
    • F. Giazotto
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-9

  • A phase battery is a quantum device that provides a persistent phase bias to the wave function of a quantum circuit. A hybrid superconducting and magnetic circuit containing two anomalous Josephson junctions can provide a tunable Josephson phase that persists in the absence of external stimuli.

    • Elia Strambini
    • Andrea Iorio
    • Francesco Giazotto
    Research
    Nature Nanotechnology
    Volume: 15, P: 656-660

  • An electrical heat engine has been realized at sub-Kelvin temperatures. It consists of a superconducting spin-selective tunnel junction of EuS/Al/AlOx/Co. The efficiency of the engine is quantified for different magnetic configurations.

    • Clodoaldo Irineu Levartoski de Araujo
    • Pauli Virtanen
    • Elia Strambini
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • Multi-terminal superconducting Josephson junctions are used to induce topologically protected transitions between gapless and gapped states, showing the potential for creating artificial topological materials.

    • E. Strambini
    • S. D'Ambrosio
    • F. Giazotto
    Research
    Nature Nanotechnology
    Volume: 11, P: 1055-1059

  • M. Valentini et al. study superconducting quantum interference devices (SQUIDs) where the weak link of the Josephson junctions is a germanium 2D hole gas. They report signatures of the tunneling of pairs of Cooper pairs. For a particular microwave drive power, they observe a 100% efficient superconducting diode effect.

    • Marco Valentini
    • Oliver Sagi
    • Georgios Katsaros
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-10

  • The astronomical event GW170817, detected in gravitational and electromagnetic waves, is used to determine the expansion rate of the Universe, which is consistent with and independent of existing measurements.

    • B. P. Abbott
    • R. Abbott
    • M. Serra-Ricart
    Research
    Nature
    Volume: 551, P: 85-88

  • A stochastic background of gravitational waves is expected to arise from a superposition of a large number of unresolved gravitational-wave sources and should carry unique signatures from the earliest epochs of the Universe. Limits on the amplitude of the stochastic gravitational-wave background are now reported using the data from a two-year science run of the Laser Interferometer Gravitational-wave Observatory. These limits rule out certain models of early Universe evolution.

    • B. P. Abbott
    • R. Abbott
    • J. Zweizig
    Research
    Nature
    Volume: 460, P: 990-994

  • The discovery of spin-triplet Cooper pairs at superconductor/ferromagnet interfaces provides a route for combining superconducting and magnetic orders. Recent advances and challenges in the field of superconducting spintronics are now reviewed.

    • Jacob Linder
    • Jason W. A. Robinson
    Reviews
    Nature Physics
    Volume: 11, P: 307-315