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首页> 外文期刊>Physical review >Spin-triplet supercurrent in Co/Ni multilayer Josephson junctions with perpendicular anisotropy
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Spin-triplet supercurrent in Co/Ni multilayer Josephson junctions with perpendicular anisotropy

机译：具有垂直各向异性的Co / Ni多层约瑟夫逊结中的自旋三重流超电流

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摘要

We have measured spin-triplet supercurrent in Josephson junctions of the form S/F'/F/F'/S, where S is superconducting Nb, F' is a thin Ni layer with in-plane magnetization, and F is a Ni/[Co/Ni]_n multilayer with out-of-plane magnetization. The supercurrent in these junctions decays very slowly with F-layer thickness and is much larger than in similar junctions not containing the two F' layers. Those two features are the characteristic signatures of spin-triplet supercurrent, which is maximized by the orthogonality of the magnetizations in the F and F' layers. Magnetic measurements confirm the out-of-plane anisotropy of the Co/Ni multilayers. These samples have their critical current optimized in the as-prepared state, which will be useful for future applications.
机译：我们以S / F'/ F / F'/ S的形式在约瑟夫森结中测量了自旋三重态超电流，其中S是超导Nb，F'是具有平面磁化强度的薄Ni层，F是Ni /具有平面外磁化的[Co / Ni] _n多层。这些结中的超电流随着F层厚度的衰减非常缓慢，并且比不包含两个F'层的类似结中的大得多。这两个特征是自旋三重态超电流的特征信号，通过F和F'层中磁化强度的正交性使其最大化。磁性测量结果证实了Co / Ni多层膜的面外各向异性。这些样品的临界电流在准备好的状态下进行了优化，这对将来的应用很有用。

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