Nb/Co/Py/Nb交换弹簧多层膜的磁场可调超导转变
Magnetic field tunable superconducting transition in Nb/Co/Py/Nb exchange spring multilayers
摘要：
在过去的十年中，已经表明，在s波超导体/铁磁体界面的磁非共线是自旋单线态到自旋三线态对转换的关键成分。这已经在几种合成的非共线磁性结构中得到验证。双层结构中的磁性软铁磁层和硬铁磁层组合可以用作场可调谐非共线磁性结构，其可以提供单重态到三重态对转换的磁场调谐。从Nb/Co/Py/Nb多层膜的磁化强度测量，我们证明了一个可逆的增强超导临界温度为400 mK的测量Tc与和没有Co和Py之间的非共线磁结构。这些结构中Tc的灵敏度为实现磁场可调的约瑟夫森结提供了可能性，其中对转换和约瑟夫森临界电流使用适度的磁场是可控的。
英文摘要：
Over the last decade it has been shown that magnetic non-collinearity at a s-wave superconductor/ferromagnet interface is a key ingredient for spin-singlet to spin-triplet pair conversion. This has been verified in several synthetic non-collinear magnetic structures. A magnetically soft and hard ferromagnetic layer combination in a bi-layer structure can function as a field tunable non-collinear magnetic structure which may offer magnetic-field tuneability of singlet-to-triplet pair conversion. From magnetization measurements of Nb/Co/Py/Nb multilayers we demonstrate a reversible enhancement of the superconducting critical temperature of 400 mK by measuring Tc with and without a non-collinear magnetic structure between Co and Py. The sensitivity of Tc in these structures offers the potential for realizing magnetic field tunable Josephson junctions in which pair conversion and Josephson critical currents are controllable using modest magnetic fields.
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。
