Vertically-Stacked Josephson Junctions Using as a Counter Electrode for Improving Uniformity
Vertically-Stacked Josephson Junctions Using as a Counter Electrode for Improving Uniformity
复制标题
垂直堆叠约瑟夫森结用作对电极以提高均匀性
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
H. Hayakawa
中科院分区：
文献类型：
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作者：
T. Kimura;K. Wakita;Y. Yoshinaga;Koichiro Taniike;T. Nishitani;M. Inoue;A. Fujimaki;H. Hayakawa
我们利用（YbBCO）作为反电极制备了垂直堆叠的界面处理约瑟夫森结，以改善均匀性。我们使用YBCO作为基电极。在一个芯片上制造的大多数结都具有电阻分流结（RSJ）特性。在4.2 K时，结的性质为：扩展为6.9%，扩展为5.4%。与YBCO作为反电极的结相比，这些扩散得到了改善。此外，YbBCO反电极结的正常电导与温度无关。这种特性在YBCO垂直堆叠界面处理结中还没有得到。我们推测这种差异是由于基电极和反电极之间的晶格不匹配造成的。索引术语：高温超导体，约瑟夫森结制造，垂直堆叠界面处理结，。
We have fabricated vertically-stacked inter- face-treated Josephson junctions using (YbBCO) as a counter electrode for improving the uniformity. We used YBCO for the base electrode. Most of the junctions fab- ricated on one chip exhibited resistively-shunted-junction (RSJ) characteristics. The properties of the junctions at 4.2 K were as follows: with a spread of 6.9%, and with a spread of 5.4%. These spreads were improved compared with those of junctions with YBCO as a counter electrode. Furthermore, the normal conductance of the junctions with the YbBCO counter electrode was independent of the temperature. Such characteristics have not been obtained for YBCO vertically-stacked interface-treated junctions. We speculate that this difference is attributed to the lattice mismatch between base-and counter-electrodes. Index Terms—High-temperature superconductors, Josephson junction fabrication, vertically-stacked interface-treated junc- tions, .