Neilo Alexey, Bakurskiy Sergey, Klenov Nikolay, Soloviev Igor, Kupriyanov Mikhail
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia.
National University of Science and Technology MISIS, Moscow 119049, Russia.
Nanomaterials (Basel). 2024 Jan 23;14(3):0. doi: 10.3390/nano14030245.
We have studied the proximity effect in an SF1S1F2s superconducting spin valve consisting of a massive superconducting electrode (S) and a multilayer structure formed by thin ferromagnetic (F1,2) and superconducting (S1, s) layers. Within the framework of the Usadel equations, we have shown that changing the mutual orientation of the magnetization vectors of the F1,2 layers from parallel to antiparallel serves to trigger superconductivity in the outer thin s-film. We studied the changes in the pair potential in the outer s-film and found the regions of parameters with a significant spin-valve effect. The strongest effect occurs in the region of parameters where the pair-potential sign is changed in the parallel state. This feature reveals new ways to design devices with highly tunable inductance and critical current.
我们研究了由块状超导电极（S）以及由薄铁磁层（F1、F2）和超导层（S1、s）形成的多层结构组成的SF1S1F2s超导自旋阀中的邻近效应。在乌萨德尔方程的框架内，我们表明，将F1、F2层的磁化矢量的相互取向从平行改变为反平行有助于在外层薄s膜中触发超导性。我们研究了外层s膜中配对势的变化，并找到了具有显著自旋阀效应的参数区域。最强的效应出现在平行状态下配对势符号发生变化的参数区域。这一特性揭示了设计具有高度可调电感和临界电流的器件的新方法。
