Growth and transport features of electron-doped superconductor Pr1-xLaCexCuO4-δ thin films

• 来源期刊: 中国物理B（英文版）
• 关键词: electron-doped cuprate Pr1-xLaCexCuO4-δ thin film magnetron sputtering
• 年，卷（期）: 2009,（5）
• 页码范围: 2054-2057
• 页数: 4页
• 语种: 英文

摘要

T'-phase electron-doped superconductor Pr1-xLaCexCuO4-δ (PLCCO) thin films are successfully prepared on SrTiO3 (100) substrates by using the dc magnetron sputtering method. It is found that the films each have a highly oriented structure along the c-axis. For optimally doped films with x ≈ 0.10, the superconducting transition temperature Tc is 23.5 K, which is similar to that of a single crystal. The quadratic temperature depcndence of the resistivity is observed when T Tc, which can be attributed to the two-dimensional Fermi liquid behaviour. Besides, the optimal conditions for preparing the T'-phase PLCCO thin films are also discussed in detail.