Our new preprint on “Interplay between magnetism and superconductivity in a hybrid magnon-photon bilayer system” is finally on-line on ArXiv, at the following link: https://arxiv.org/abs/2312.02785
Abstract: “Spin waves in magnetic films are affected by the vicinity to a superconductor. Here we studied a bilayer stack made of an insulating Yttrium Iron Garnet (YIG) film and a high-Tc YBCO superconducting planar resonator. We investigated the hybridization of magnon and photon modes reporting the temperature evolution of microwave transmission spectra. Data analysis, based on the description of magnon modes and on the Hopfield model, shows that the magnon-photon coupling strength and the mode frequency shift can be ultimately related to the temperature dependence of the penetration depth of YBCO.”