Phonon Raman spectroscopy of superconducting Bi2Sr2CaCu2O8+δ single crystals
作者： M. Boekholt , A. Erle , P.C. Splittgerber-Hünnekes , G. Güntherodt
DOI: 10.1016/0038-1098(90)90720-V
关键词: Phonon 、 Superconductivity 、 Raman spectroscopy 、 Raman scattering 、 Laser linewidth 、 Chemistry 、 Single crystal 、 Mineralogy 、 Inorganic compound 、 Atmospheric temperature range 、 Condensed matter physics
摘要: We report unpolarized and polarized Raman spectra on the ab- bc-planes of a Bi2Sr2CaCu2O8+δ single crystal. While most phonons have Ag- symmetry, one mode with B1g-symmetry is detected at 275 cm−1. For 463 cm−1 650 cm−1, temperature dependence frequency linewidth measured in range from 5 K up to room temperature. find softening 463-cm−1 (T = 295 K) below Tc assign this out-of-plane in-phase vibration oxygen CuO2-layers.
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