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Showing 1–8 of 8 results
Advanced filters: Author: Giacomo Ghiringhelli Clear advanced filters

  • It has been suggested that the strange metal phase in cuprates stems from a quantum critical point slightly above optimal doping. By resonant x-ray scattering in two cuprate families in a wide doping range, Arpaia et al. show that charge density fluctuations could be associated with this quantum critical point.

    • Riccardo Arpaia
    • Leonardo Martinelli
    • Giacomo Ghiringhelli
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-11

  • Better control over the quality of materials dissipates doubts about charge order in infinite-layer nickelates and indicates that a previously observed superstructure is probably a spurious effect related to other crystalline phases. This finding strengthens the similarities between nickelates and cuprates.

    • Giacomo Ghiringhelli
    News & Views
    Nature Materials
    Volume: 23, P: 443-444

  • When tightly coupled, a metallic magnet and a conventional superconductor are known to disturb each-other's order also at some distance from the interface. Here, the authors observe how this proximity effect between a ferromagnetic oxide and a high-Tcsuperconductor develops at microscopic scale.

    • G. M. De Luca
    • G. Ghiringhelli
    • M. Salluzzo
    Research
    Nature Communications
    Volume: 5, P: 1-7

  • Here, Pelliciari et al. present resonant inelastic X-ray scattering on monolayer samples of unconventional superconductor FeSe, finding evidence for gapped and dispersionless spin excitations. These experiments are very difficult due to the extremely small scattering volume of the FeSe monolayer.

    • Jonathan Pelliciari
    • Seher Karakuzu
    • Riccardo Comin
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • The strange metallic state of cuprates occurring in a broad region of their phase diagram outside the superconducting and pseudogapped regions remains a mystery. Here the authors consider the charge density fluctuations recently discovered in resonant X-ray experiments as a possible source of scattering and show that these fluctuations can account for the strange metallic behavior.

    • Götz Seibold
    • Riccardo Arpaia
    • Sergio Caprara
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-6