National Changhua University of Education Institutional Repository : Item 987654321/14136
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题名: Thermoelectric Power of High-pressure Synthesized CuBa2Ca3Cu4O−δ
作者: Liu, Chia-Jyi;Jin, C. Q.;Yamauchi, H.
贡献者: 物理學系
日期: 1996-03
上传时间: 2012-09-10T06:13:05Z
出版者: The American Physical Society
摘要: We report measurements of thermoelectric power (TEP) for high-pressure synthesized CuBa2Ca3Cu4O11-δ superconductors. The magnitude of TEP for the sample with Tc,zero=115.9 K is very small and shows a sign crossover at ∼160 K. The TEP shows a peak behavior and displays an approximately linear temperature dependence with a negative slope -0.033 μV/K2 for 120≤T≤240 K. These features resemble those for other known high-Tc cuprate superconductors, in particular Sa in the a direction for an untwinned YBa2Cu3O7-δ single crystal and polycrystalline Tl-2201 samples. A brief discussion is given on the TEP behavior in comparison with CuBa2YCu2O7-δ cuprate superconductors by considering their similar structure of building blocks and type of charge reservoir.
關聯: Phys. Rev. B, 53(9): 5170-5173
显示于类别:[物理學系] 期刊論文

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