Kinetic momentum quantum effect in a superconducting closed loop composed of Josephson junctions
Kinetic momentum quantum effect in a superconducting closed loop composed of Josephson junctions
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由约瑟夫森结组成的超导闭环中的动量量子效应
DOI：
10.1063/1.326298
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
Y. Onodera
中科院分区：
文献类型：
--
作者：
T. Yamashita;Y. Ogawa;Y. Onodera
本文讨论了由N系列约瑟夫森结组成的超导闭合回路。分析了环中磁通量达到n量子态的条件。研究发现，即使假定约瑟夫森环中的电感L很小，但在具有4n个以上结的约瑟夫森环中仍存在n量子态。这个n量子态是通过向约瑟夫森回路馈送不对称电流来实现的。回路的性质很容易用钟摆模拟来解释。
Superconducting closed loops composed of N series Josephson junctions are discussed. The conditions to achieve the n quantum state of a fluxoid in the loop are analyzed. It is found that the n quantum state exists in Josephson loops having more than 4n pieces of junctions even if it is assumed that the inductance L in the loop is negligibly small. This n quantum state is achieved by an asymmetric current feed to the Josephson loop. The properties of the loop are easily explained by using a pendulum analog.