Phonon Characterization of Raman Spectra in High T_(c) Superconductors Y_(1-x)Gd_(x)Ba_(2)Cu_(3)O_(7-δ)

ZHANG Mingsheng; CHEN Qiang; JIN Xin; YIN Zhen; YAO Xixian

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Phonon Characterization of Raman Spectra in High T_(c) Superconductors Y_(1-x)Gd_(x)Ba_(2)Cu_(3)O_(7-δ)

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Concentration-dependent Raman spectra of Y_(1-x)Gd_(x)Ba_(2)Cu_(3)O_(7-δ)(x=0.4,0.6,0.8 and 1.0)show that the Raman mode from O(4)bridging shifts upward due to the increased symmetry of crystal potential.The linewidth and intensity of 508cm^(-1)mode are decreased and increased with increasing x,respectively which is attributed to the charge transfer from the CuO basal planes to the CuO_(2)planes.Two second-order Raman modes at 798 and 896cm^(-1)have been observed and confirmed.

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《中国物理快报：英文版》 |1994年第1期|P.31-34|共4页
作者
ZHANG Mingsheng; CHEN Qiang; JIN Xin; YIN Zhen; YAO Xixian;
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作者单位

Center for Materials Analysis National Laboratory of Solid State Microstructures;

Center for Materials Analysis National Laboratory of Solid State Microstructures;

Department of Physics Nanjing University Nanjing 210008;

Department of Physics Nanjing University Nanjing 210008;

Department of Physics Nanjing University Nanjing 210008;

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中图分类光电子技术、激光技术;
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mode; Superconductor;

Phonon Characterization of Raman Spectra in High T_(c) Superconductors Y_(1-x)Gd_(x)Ba_(2)Cu_(3)O_(7-δ)

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