Department of Physics and Astronomy, University of California, Irvine, California 92697-4575, USA.
Phys Rev Lett. 2010 Nov 12;105(20):207002. doi: 10.1103/PhysRevLett.105.207002. Epub 2010 Nov 10.
The superconducting transition temperature T(c) of a ferromagnet (F)-superconductor (S)-ferromagnet trilayer depends on the mutual orientation of the magnetic moments of the F layers. This effect has been previously observed in F/S/F systems as a T(c) difference between parallel and antiparallel configurations of the F layers. Here we report measurements of T(c) in CuNi/Nb/CuNi trilayers as a function of the angle between the magnetic moments of the CuNi ferromagnets. The observed angular dependence of T(c) is in qualitative agreement with a F/S proximity theory that accounts for the odd triplet component of the condensate predicted to arise for noncollinear orientation of the magnetic moments of the F layers.
铁磁体（F）-超导体（S）-铁磁体三层的超导转变温度 T(c) 取决于 F 层磁矩的相互取向。这种效应以前在 F/S/F 系统中观察到，表现为 F 层平行和反平行配置之间的 T(c) 差异。在这里，我们报告了 CuNi/Nb/CuNi 三层膜中 T(c)作为 CuNi 铁磁体磁矩之间角度的函数的测量结果。观察到的 T(c)的角度依赖性与 F/S 近邻理论定性一致，该理论解释了对于 F 层磁矩的非共线取向预计会出现的凝聚体的奇数三重态分量。
