Real time fluxon dynamics in josephson transmission line
Real time fluxon dynamics in josephson transmission line
复制标题
约瑟夫森输电线路中的实时磁通动力学
DOI：
10.1109/tmag.1985.1063760
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发表时间：
1985
影响因子：
2.1
通讯作者：
H. Hayakawa
中科院分区：
文献类型：
--
作者：
H. Akoh;S. Sakai;A. Yagi;H. Hayakawa
利用约瑟夫森采样技术，实时研究了约瑟夫森传输线(JTL)中磁通子传播的动力学。JTL是尺寸为2.5×15 0μm2的NbN-氧化物-NbN约瑟夫森结，而约瑟夫森采样器和用于产生和驱动磁通的脉冲发生器是用铅合金技术制造的。在各种行为中，特别是发现，可以使传播的磁通子在通过在JTL的一部分表面上放置电阻而产生的任何所需位置处暂停而不反射。表面电阻的长度大于约瑟夫森穿透深度。实验结果与计算机模拟结果进行了比较，结果表明，在S工作时间超过100μ后，在表面电阻上加一个小电流，即可重新驱动暂停的磁通管。文中还讨论了采样器观测到的流子反射。
Dynamics of fluxons propagating in a Josephson transmission line (JTL) have been studied in real time using Josephson sampling techniques. A JTL is an NbN-oxide-NbN Josephson junction with dimensions of 2.5 × 150 μm2, while Josephson samplers and pulse generators for generating and driving fluxons are fabricated by a Pb-alloy technology. Among the various behaviors, especially, it is found that a propagating fluxon can be made to pause without reflections at any desired position which is created by placing a resistor on the surface of a portion of a JTL. The surface resistor has a length larger than the Josephson penetration depth. A pausing fluxon can be re-driven by supplying a small current to the portion of the surface resistor after more than 100 μs, The experimental results are compared with computer simulations. Reflections of fluxons observed by samplers have also been discussed.