高温超导GdBa_2Cu_3O_(7-δ)薄膜2×4阵列微桥单元及多元器件特性研究  

High T_c Superconducting GdBa_2Cu_3O_(7-δ) Thin Film 2×4 Array Microbridge Single and Multicomponent Device

作　　者：万云[1] 平一梅[1] 贺庆丽[1] 姚合宝[1] 

机构地区：[1]西北大学物理系,西安710069

出　　处：《低温与超导》2000年第3期20-24,共5页Cryogenics and Superconductivity

摘　　要：在高 Tc超导 Gd Ba2 Cu3O7-δ薄膜上 ,采用光刻技术制成 2× 4阵列微桥单元及多元器件 ,对器件性能在液氮温度下进行了系统的观测。实验表明 ,Gd Ba2 Cu3O7-δ薄膜超导性能优异 ,稳定性很好 ,桥区尺寸较小的微桥呈现与双晶晶界结相似的 I- V特性 ,可能具有弱连接行为。而多单元串接微桥器件出现的多台阶式的特性 ,可望在红外探测计量及高频方面获得重要应用。The 2×4 array microbridge single and multicomponent devices with high Tc superconducting GdBa 2Cu 3O 7-δ thin film were designed and fabricated using ordinary photolithography. The properties of the device were observed at 77K. The test results show that the superconducting properties and stability of GdBa 2Cu 3O 7-δ thin film are superior. The I-V characteristic of the microbridge in small size is similar to the bicrystal grain boundary junctions, and this kind of microbridge has probably the weak link behaviour. The steps characteristic of the series microbridge device will be applied in the infrared detectors in future.

关 键 词：高温超导薄膜 阵列微桥单元 超导性能 多元器件 

分 类 号：TM26[一般工业技术—材料科学与工程] O551.9[电气工程—电工理论与新技术]