TEMPERATURE DEPENDENCE OF JOSEPHSON PLASMA MODES IN Bi2Sr2CaCu2O8+δ NEAR Tc

摘要: A strong temperature dependent phenomenon of the Josephson plasma resonance mode has been found in high-Tc superconductor Bi2Sr2CaCu2O8+δ a microwave frequency region between 9 and 50 GHz. The longitudinal sharply decreases disappears just below Tc. extrapolated energy is estimated to be ℏωp(0)=2.59× 10-4eV. Since frequency, ωp, determined by Anderson-Higgs–Kibble mechanism it expected independent, this can not accounted for conventional underst ing superconductors. Experimental results are discussed terms two fluid model, which intrinsic nature coupling restricting tunneling probability quasiparticles layers considered as dumping system.