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首页> 外文期刊>Physical review >Superconductivity-induced magnetoresistance suppression in hybrid superconductor/magnetic tunnel junctions
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Superconductivity-induced magnetoresistance suppression in hybrid superconductor/magnetic tunnel junctions

机译:混合超导体/磁隧道结中的超导感应磁阻抑制

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摘要

Hybrid superconductor/magnetic tunnel junctions of Nb/CoFe/AlO/CoFe/NiFe have been implemented to investigate the impact of the superconducting Nb layer on the proximal ferromagnetic CoFe layer. A suppression of tunneling magnetoresistance effect is observed as the Nb layer undergoes the superconducting transition. This suppression is thought to be due primarily to the coupling of the magnetic inhomogeneity of CoFe to the superconductivity of Nb. The magnetic structure-vortex interactions interplay each other, inducing a complex domain evolution in the magnetization process and consequently degrading the junction's antiparallel magnetization alignment.
机译:Nb / CoFe / AlO / CoFe / NiFe的混合超导体/磁性隧道结已经实现,以研究超导Nb层对近端铁磁CoFe层的影响。当Nb层经历超导转变时,观察到隧穿磁阻效应的抑制。认为这种抑制主要是由于CoFe的磁性不均匀性与Nb的超导电性的耦合所致。磁性结构-涡旋相互作用相互影响,在磁化过程中引起复杂的畴演化,从而降低结的反平行磁化排列。

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