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Influence of spin relaxation length on lateral double superconductor/ ferromagnet/superconductor junctions

机译:旋转弛豫长度对横向双超导体/铁磁/超导条件的影响

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We study the spin dependent transport at the junctions between two superconducting Nb leads connected by two ferromagnetic NiFe bars in parallel, which have various separations. The separation distance l between NiFe bars was varied from 150 to 700 nm to study the spin relaxation effect in Nb. In small l (150 and 250 nm) samples, a spin-valve-like behavior related to the inverse proximity effect was observed, which manifest itself as charge accumulation due to spin imbalance near the interface. However, for samples with large l, the spin-valve behavior vanishes and the anisotropic magnetoresistance effect dominates.
机译:我们在两个铁磁性NiFe棒并联连接的两个超导Nb引线之间的连接处研究旋转依赖传输,这具有各种分离。 NiFe条之间的分离距离L从150〜700nm变化,以研究Nb中的旋转弛豫效果。在小的L(150和250nm)样品中,观察到与逆接近效果相关的自旋阀样行为,其在界面附近的旋转不平衡引起的自身表现为电荷累积。然而,对于具有大L的样品,旋转阀行为消失,各向异性磁阻效应占主导地位。

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