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Inelastic Light Scattering Studies of Bi2Sr2CaCu2O8+δ: Charge and Spin Excitations Revisited
並列摘要
We revisit the low- and high-energy Raman scattering spectra of Bi2Sr2CaCu2O8+δ single crystals. We show that the superconductivity phase transition results not only in a renormalization of the in-plane and out-of-plane electronic scattering continuum, but also in an enhancement of the intensity of the two-magnon excitation. These results suggest that the subtle interplay between the electronic and magnetic degrees of freedom must be taken into account in a proper description of cuprate superconductors.
並列關鍵字
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