2025/05/27 by Tsugumi Matsumoto, Matsumoto, Tsugumi, Ryotaro Sano +5
Chemistry · Materials Science · Physics and Astronomy · #Inorganic Fluorides and Related Compounds #Organic and Molecular Conductors Research #Solid-state spectroscopy and crystallography #cond-mat.mtrl-sci #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.2505.21436
openalex publication_date 2025/05/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Two-dimensional van der Waals superconductors are attracting much attention owing to their rich phase diagrams including possible unconventional superconductivity. However, they suffer from a lack of reliable methods for identifying their nontrivial pairing symmetries and quantum geometry. In this study, we propose nonlinear responses driven by surface acoustic waves as a novel probe to access exotic Bogoliubov quasiparticles in such superconductors. Our approach is particularly suitable for addressing the superconducting gap structure as the gap energies in these systems typically lie within the frequency range of surface acoustic waves, and thus paves the way toward the experimental identification of exotic superconducting states especially in low-Tc superconductors.