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arXiv 0910.0233cond-mat.supr-con
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平行输运电流对D波约瑟夫森结的影响

Effect of Parallel Transport Currents on the D-wave Josephson junction

Gholamreza Rashedi

摘要:

本文研究了d波超导体中相干电流态的非局域混合。超导体组通过弹道点接触连接。银行有一个错误的方向和相位差。此外,它们还受到沿d波晶体的$ab$平面且平行于超导体之间界面的切向输运电流的作用。本文研究了取向差和外输运电流对电流相位关系和电流分布的影响。观察到,在相位差接近0、$π$和$2π$的值处,电流分布在点接触附近可能具有涡旋状形式。这种d波超导体结的电流分布与s波超导体结的电流分布完全不同。作为有趣的结果,自发和约瑟夫森电流的情况下观察到的$ϕ=0$。

英文摘要:

In this paper, the nonlocal mixing of coherent current states in d-wave superconducting banks is investigated. The superconducting banks are connected via a ballistic point contact. The banks have a mis-orientation and a phase difference. Furthermore, they are subjected to a tangential transport current along the $ab$-plane of d-wave crystals and parallel with interface between superconductors. The effects of mis-orientation and external transport current on the current-phase relations and current distributions are subjects of this paper. It observed that, at values of phase difference close to 0, $π$ and $2π$ the current distribution may have a vortex-like form in vicinity of the point contact. The current distribution of this junction between d-wave superconductors is totally different from the junction between s-wave superconductors. As the interesting results, spontaneous and Josephson currents are observed for the case of $ϕ=0$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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