標題: Superconductivity-induced magnetoresistance suppression in hybrid superconductor/magnetic tunnel junctions
作者: Chang, Yin-Ming
Li, Kai-Shin
Chiang, Wen-Chung
Lin, Jiunn-Yuan
Lin, Minn-Tsong
物理研究所
Institute of Physics
關鍵字: 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
公開日期: 1-一月-2009
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.
URI: http://dx.doi.org/10.1103/PhysRevB.79.012401
http://hdl.handle.net/11536/7950
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.79.012401
期刊: PHYSICAL REVIEW B
Volume: 79
Issue: 1
結束頁: 
顯示於類別:期刊論文