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Showing 1–4 of 4 results
Advanced filters: Author: Gideok Kim Clear advanced filters

  • Interaction between Cooper pairs and other collective excitations may reveal important information about the pairing mechanism. Here, the authors observe a universal jump in the phase of the driven Higgs oscillations in cuprate thin films, indicating the presence of a coupled collective mode, as well as a nonvanishing Higgs-like response at high temperatures, suggesting a potential nonzero pairing amplitude above Tc.

    • Hao Chu
    • Min-Jae Kim
    • Stefan Kaiser
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6

  • Cuprate superconductors are known for their intertwined interactions and coexistence of competing orders. Here, the authors observe a Fano resonance in the nonlinear THz response of La2-xSrxCuO4, which may arise from a coupling between superconducting and charge-density-wave amplitude fluctuations.

    • Hao Chu
    • Sergey Kovalev
    • Stefan Kaiser
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7

  • The charge density wave in Ta2NiSe7 cannot be easily explained by the Fermi surface nesting mechanism. Here, by using high-resolution ARPES, the authors reveal the absence of nesting at the primary vector q, but a backfolding at q and a possible nesting at 2q, suggesting a peculiar charge density wave state.

    • Matthew D. Watson
    • Alex Louat
    • Gideok Kim
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7