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Showing 1–10 of 10 results
Advanced filters: Author: Mikhail Feigel'man Clear advanced filters

  • Disorder leads to localization of electrons at low temperatures, changing metals to insulators. In a superconductor the electrons are paired up, and scanning tunnelling microscopy shows that the pairs localize together rather than breaking up and forming localized single electrons in the insulating state.

    • Benjamin Sacépé
    • Thomas Dubouchet
    • Lev Ioffe
    Research
    Nature Physics
    Volume: 7, P: 239-244

  • In high-temperature superconductors, a very low density of states, the pseudogap, exists even above the critical temperature. Here, the authors show that this is also the case for a conventional superconductor, titanium nitride thin films, and that this pseudogap is induced by superconducting fluctuations.

    • Benjamin Sacépé
    • Claude Chapelier
    • Marc Sanquer
    Research
    Nature Communications
    Volume: 1, P: 1-6

  • The breakdown of superconductivity is described as a reduction in the amplitude of the order parameter or a breakdown in phase coherence of Cooper pairs. This Review Article highlights recent results that show both mechanisms may be at play simultaneously.

    • Benjamin Sacépé
    • Mikhail Feigel’man
    • Teunis M. Klapwijk
    Reviews
    Nature Physics
    Volume: 16, P: 734-746

  • A first-order, disorder-driven, superconductor–insulator phase transition is demonstrated. This is in contrast with the usually observed second-order transition and highlights the role of Coulomb interactions between preformed Cooper pairs.

    • Thibault Charpentier
    • David Perconte
    • Benjamin Sacépé
    Research
    Nature Physics
    Volume: 21, P: 104-109

  • Despite 15 years of turbulent change, 'brain drain' and a shortage of research funds, Russian science has survived, although in a much diminished state. International investment and collaboration over the next ten years could bring it back from the brink.

    • Mikhail Feigel'man
    Comments & Opinion
    Nature Physics
    Volume: 3, P: 138-139

  • When superconducting discs are deposited on graphene they induce local superconducting islands. The phase coupling between the islands can be controlled by a gate. Quantum phase fluctuations kill the superconductivity and lead to a metallic state, however, at higher magnetic fields superconductivity can return.

    • Zheng Han
    • Adrien Allain
    • Vincent Bouchiat
    Research
    Nature Physics
    Volume: 10, P: 380-386

  • An anomalous upturn of the critical field at low temperature observed in disordered superconductors has long puzzled researchers. A joint experimental and theoretical study suggests that the origin of the anomaly lies in the physics of vortex glasses.

    • Benjamin Sacépé
    • Johanna Seidemann
    • Mikhail V. Feigel’man
    Research
    Nature Physics
    Volume: 15, P: 48-53