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Showing 1–10 of 10 results
Advanced filters: Author: E. Bocquillon Clear advanced filters

  • The Coulomb force between charges has a much greater influence on the electronic characteristics of 1D conductors than it does in 3D. Bocquillon et al. identify the separation of neutral and charged 1D edge modes, driven by Coulomb interactions in a quantum Hall system.

    • E. Bocquillon
    • V. Freulon
    • G. Fève
    Research
    Nature Communications
    Volume: 4, P: 1-7

  • A material weakly linking two superconductors may itself exhibit superconductivity whilst its material properties strongly influence the nature of the supercurrent. Here, the authors identify a supercurrent with p-wave symmetry in such a Josephson junction made of topologically non-trivial material.

    • J. Wiedenmann
    • E. Bocquillon
    • L. W. Molenkamp
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • Observations of the Schwinger effect—the creation of matter by electric fields—have been hindered by the high required field strength. A mesoscopic variant of the Schwinger effect has now been realized in graphene transistors.

    • A. Schmitt
    • P. Vallet
    • B. Plaçais
    ResearchOpen Access
    Nature Physics
    Volume: 19, P: 830-835

  • Topological insulator nanowires are interesting because, in the presence of superconductivity, they may host elusive Majorana fermions. Here, superconductivity in (Bi1−xSbx)2Te3 topological-insulator nanowires is realized by using palladium diffusion, providing a tunable platform for Majorana zero modes.

    • Mengmeng Bai
    • Xian-Kui Wei
    • Yoichi Ando
    ResearchOpen Access
    Communications Materials
    Volume: 3, P: 1-7

  • One of the many intriguing possibilities in strongly interacting quantum systems is the formation of emergent excitations with fractional charges. Here the authors show how the high-frequency noise emitted by a dc-biased quantum point contact can be used to demonstrate charge fractionalization.

    • R. Bisognin
    • H. Bartolomei
    • G. Fève
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • Dirac fermion optics leverages p-n junctions and Klein tunnelling barriers present in materials to implement complex optical functions and devices, including reflectors, collimators, and Dirac fermion microscopes. Here, the authors fabricate Dirac fermion corner reflectors using bottom-gate-defined barriers in hBN-encapsulated graphene, and demonstrate high-frequency operation.

    • H. Graef
    • Q. Wilmart
    • B. Plaçais
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-9

  • Elementary excitations of electronic devices have potential use in quantum information but control and readout capabilities are not as developed as they are for more mature systems such as photonic qubits. Here the authors develop and demonstrate a tomographic protocol for electron and hole wavefunctions.

    • R. Bisognin
    • A. Marguerite
    • G. Fève
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-12

  • The superconducting proximity effect has not been experimentally demonstrated in a quantum anomalous Hall insulator. Now this effect is observed in the chiral edge state of a ferromagnetic topological insulator.

    • Anjana Uday
    • Gertjan Lippertz
    • Yoichi Ando
    ResearchOpen Access
    Nature Physics
    Volume: 20, P: 1589-1595