Physics – Condensed Matter – Superconductivity
Scientific paper
2010-10-08
Phys. Rev. Lett. 105, 207002 (2010)
Physics
Condensed Matter
Superconductivity
4 + \epsilon pages including 4 figures. To appear in Phys. Rev. Lett
Scientific paper
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 non-collinear orientation of the magnetic moments of the F layers.
Halterman Klaus
Krivorotov Ilya N.
Valls Oriol T.
Zhu Jian
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