Superconductivity-induced magnetoresistance suppression in hybrid superconductor/magnetic tunnel junctions

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题名:	Superconductivity-induced magnetoresistance suppression in hybrid superconductor/magnetic tunnel junctions
作者:	Chiang, WC (Chiang, Wen-Chung) Chang, YM (Chang, Yin-Ming) Li, KS (Li, Kai-Shin) Lin, JY (Lin, Jiunn-Yuan) Lin, MT (Lin, Minn-Tsong)
贡献者:	物理系
关键词:	aluminium compounds cobalt alloys ferromagnetic materials iron alloys magnetic multilayers magnetic structure magnetisation mixed state nickel alloys niobium superconducting materials superconducting thin films superconducting transitions superconductive tunnelling tunnelling magnetoresistance
日期:	2009
上传时间:	2011-12-12 14:13:34 (UTC+8)
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.
显示于类别:	[光電物理系] 期刊論文

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