Abstract:The relation between magnetism and superconductivity, whether magnetism is beneficial to superconductivity or they permit co-existence and competition, has been a long debate in the high-temperature superconducting field. Here, to explore this odd issue, we study the relaxation dynamics of photoinduced magnetic-polaron and superconductivity quasiparticles by an ultrafast time-resolved optical reflectivity technology in Bi2Sr2CaCu2O8+δ. When the pump fluence ℱ is less than 7mW, time-resolved reflection spectrum… Show more
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