Phys. Rev. Lett. 95, 097003 (2005) [4 pages]Superconducting Spin Valve Effect of a V Layer Coupled to an Antiferromagnetic [Fe/V] SuperlatticeReceived 22 December 2004; published 24 August 2005 We studied superconducting V layers deposited on an antiferromagnetically coupled [Fe2V11]20 superlattice. The parallel upper critical magnetic field exhibits an anomalous T dependence up to the ferromagnetic saturation field of the superlattice, indicating that the superconducting transition temperature TS decreases when rotating the relative sublattice magnetization directions of the superlattice from antiparallel to parallel. This proves that the pair breaking effect of a Fe2 layer is reduced if at a distance of 1.5 nm a second Fe2 layer with antiparallel spin orientation exists. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.097003
DOI:
10.1103/PhysRevLett.95.097003
PACS:
74.78.Fk
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