Josephson current in ferromagnet-superconductor tunnel junctions | |
Li, X. W. ; Zheng, Z. M. ; Xing, D. Y. ; Sun, G. Y. ; Dong, Z. C. ; Sun GY(孙国亚) | |
2002 | |
关键词 | ANDREEV REFLECTION STATES TRANSITION |
英文摘要 | We present a phase diagram of a ferromagnetic superconductor (FS) in T-h plane with T the temperature and h the effective exchange field, in which a first-order phase-transition line separates the superconducting region from the normal-state region. The Josephson currents in an FS/I/FS junction (with I denoting thin insulating layers) are calculated as a function of the temperature, exchange field, and insulating barrier strength. It is found that the presence of h always suppresses the Josephson critical current at higher temperatures, or for weak barrier strength, or for a parallel configuration of the magnetic moments of two FS electrodes. The only exception that the critical current increases with h occurs if all three conditions are satisfied: at low temperatures, for strong barrier strength, and in an antiparallel configuration. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/68915] ![]() |
专题 | 物理技术-已发表论文 |
推荐引用方式 GB/T 7714 | Li, X. W.,Zheng, Z. M.,Xing, D. Y.,et al. Josephson current in ferromagnet-superconductor tunnel junctions[J],2002. |
APA | Li, X. W.,Zheng, Z. M.,Xing, D. Y.,Sun, G. Y.,Dong, Z. C.,&孙国亚.(2002).Josephson current in ferromagnet-superconductor tunnel junctions.. |
MLA | Li, X. W.,et al."Josephson current in ferromagnet-superconductor tunnel junctions".(2002). |
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