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YBa2Cu3O7-δ超导体声子谱的动态研究

DYNAMIC STUDY ON PHONON SPECTRA OF YBa2Cu3O7-δ SUPERCONDUCTOR

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【作者】 张贵忠李浩亮李增发张光寅阎杰宋德英杨小明刘宝瑞蔡明儒

【Author】 ZHANG GUIZHONG, LI HAOLIANG, LI ZENGFA, ZHANG GUANGYIN (Department of Physics, Nankai University, Tianjin, China) YAN JIE, SONG DEYING, YAUG XIAOMING (Department of Chemistry, Nankai University, Tianjin, China) LIR BAOYUI, CAI MINGRU (Deparmtent of Electronic Sciences, Nankai University, Tianjin, China)

【机构】 南开大学物理系南开大学化学系南开大学电子系南开大学电子系 天津天津天津

【摘要】 测定了YBa2Cu3O7-δ超导体在室温至10K的中红外透射光谱,发现超导相YBa2Cu3O7-δ相与其它相的中红外透射光谱存在巨大差异,且与超导性能密切相关.从声子选择定则的群论出发,讨论了强电子-声子耦合对高T0超导电性的作用

【Abstract】 Mid-IR transmittance spectra of YBa2Cu3O7-δ superconductors are measured in the temperature range of R. T. to 10K. The significant difference in spectra between the superconducting phase YBa2Cu3O7-δ and other phases is found and considered to be intimately related to the superconducting behaviors. The effect of the strong electron-phonon coupling on the high-Tc superconductivity process is discussed in terms of the group theory for phonon selection rules.

【关键词】 超导体超导相中红外透射光谱
  • 【文献出处】 红外研究 , 编辑部邮箱 ,1989年02期
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