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Showing 1–3 of 3 results
Advanced filters: Author: Olivier Cyr-Choinière Clear advanced filters

  • The Nernst effect in metals is sensitive to superconductivity and density-wave order. The large positive Nernst signal observed in hole-doped high-transition-temperature superconductors has been attributed to fluctuating superconductivity but Olivier Cyr-Choiniere and colleagues report that the Nernst signal can be caused by stripe order. In LSCO doped with Nd or Eu, the onset of stripe order causes the Nernst signal to go from small and negative to large and positive.

    • Olivier Cyr-Choinière
    • R. Daou
    • Louis Taillefer
    Research
    Nature
    Volume: 458, P: 743-745

  • In the study of high-transition-temperature (high-Tc) copper oxide superconductors, a fundamental question is what symmetries are broken when the pseudogap phase sets in below a temperature T*. A large in-plane anisotropy of the Nernst effect is now observed in a high-Tc copper oxide superconductor that sets in precisely at T* throughout the doping phase diagram. It is concluded that the pseudogap phase is an electronic state that strongly breaks four-fold rotational symmetry.

    • R. Daou
    • J. Chang
    • Louis Taillefer
    Research
    Nature
    Volume: 463, P: 519-522