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高温超导体Y-Ba-Cu-O相变的正电子湮没研究
高温超导体 正电子湮没 Y-Ba-Cu-O相变
2009/5/21
在相变温度附近同时测量了电阻、正电子寿命谱和多普勒增宽能谱.发现在相变区域正电子的平均寿命τm、多普勒增宽线形参数H、S无规振荡,估计与晶格的稳定性有关,似乎支持以双极化子理论为主的超导机制.
Preparation and Study of the Structural, Optical and Electrical Properties of Cu(In,Ga)Se2 Thin Films
CIGS thin films absorber material solar cell optical properties band gap electrical properties
2010/4/9
Thin film samples of Cu(In,Ga)Se2 (CIGS) were prepared at room temperature by physical vapor deposition (PVD) technique using resistive heating method onto soda lime glass substrates. Deposition condi...
Compositional Dependence of Properties of rf-Sputtered Bi-Sr-Ca-Cu-O thin Films
rf-Sputtered Bi-Sr-Ca-Cu-O transition temperature
2010/4/19
Compositional dependence of superconducting transition temperature (Tc) of Bi2Sr3-xCaxCu2O8+x thin films grown by rf sputtering on single crystal MgO substrates has been investigated. Films have been ...