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Showing 1–8 of 8 results
Advanced filters: Author: Riccardo Arpaia Clear advanced filters
  • The authors report an enhancement of the superconducting onset temperature in nanometer-thin YBa2Cu3O7-δ films grown on substrates with nanofaceted surfaces. They theoretically show that the enhancement is mainly driven by electronic nematicity and unidirectional charge density waves, and further suggest that the nanofacets themselves may promote these effects.

    • Eric Wahlberg
    • Riccardo Arpaia
    • Floriana Lombardi
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-8
  • 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
  • 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
  • Proximity effect may induce unconventional superconductivity in the topologically protected surface states of a topological insulator, however experimental evidence remains rare. Here, Charpentier et al. report proximity effect induced superconductivity in nanoscale Josephson junctions and suggest an unconventional p-wave order parameter.

    • Sophie Charpentier
    • Luca Galletti
    • Floriana Lombardi
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-8
  • Recent work has shown that substrate-induced strain engineering of thin-film cuprate superconductors can induce nematicity and a unidirectional charge density wave. Here, a microscopic model provides a mechanistic understanding for this unconventional phenomenology.

    • Giovanni Mirarchi
    • Riccardo Arpaia
    • Götz Seibold
    ResearchOpen Access
    Communications Materials
    Volume: 5, P: 1-6
  • 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