Angular Dependence of the Superconducting Transition Temperature in Ferromagnet-Superconductor-Ferromagnet Trilayers
Jian Zhu, Ilya N. Krivorotov, Klaus Halterman, Oriol T. Valls
DOI 10.1103/PhysRevLett.105.207002 · Physical Review Letters
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Abstract
The superconducting transition temperature Tc 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 Tc difference between parallel and antiparallel configurations of the F layers. Here we report measurements of Tc in CuNi/Nb/CuNi trilayers as a function of the angle between the magnetic moments of the CuNi ferromagnets. The observed angular dependence of Tc 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.745 | Pressure not reported | midpoint |
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