Magnetization-orientation dependence of the superconducting transition temperature in the ferromagnet-superconductor-ferromagnet system: CuNi/Nb/CuNi

被引：295

作者：

Gu, JY ^{[1
]}

You, CY ^{[1
]}

Jiang, JS ^{[1
]}

Pearson, J ^{[1
]}

Bazaliy, YB ^{[1
]}

Bader, SD ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.89.267001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The superconducting critical temperature (T-c) of ferromagnet-superconductor-ferromagnet systems has been predicted to exhibit a dependence on the magnetization orientation of the ferromagnetic layers such that T-c(AP)>T-c(P) for parallel (P) and antiparallel (AP) configurations of the two ferromagnetic layers. We have grown CuNi/Nb/CuNi films via magnetron sputtering and confirmed the theoretical prediction by measuring the resistance of the system as a function of temperature and magnetic field. We find an similar to25% resistance drop occurs near T-c in Cu0.47Ni0.53(5 nm)/Nb(18)/CuNi(5) when the two CuNi layers change their magnetization directions from parallel to antiparallel, whereas there is no corresponding resistance change in the normal state.

引用

页数：4

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