Superconducting/Ferromagnetic (S/F) hybrid systems exhi bit a number of interesting properties due to the interplay between th e competing symmetries of their order parameters. With conventional s pin-singlet superconductors\, the proximity effect in S/F systems deca ys over an extremely short length scale in the ferromagnet due to the large exchange splitting between the spin-up and spin-down electron ba nds. In S/F/S Josephson junctions\, the critical current oscillates a nd decays rapidly as a function of the ferromagnetic layer thickness. If there were spin-triplet superconducting correlations present\, how ever\, then both the proximity and Josephson effects would persist ove r much longer distances. Such correlations have been predicted to occ ur in S/F systems with certain forms of magnetic inhomogeneity near th e S/F interface. Moreover\, these correlations exhibit a strange symm etry never before observed: they are odd in frequency or time. In thi s talk I will discuss our efforts to produce and measure these elusive spin-triplet correlations in S/F/S Josephson junctions\, culminating in our very recent success.1
\n \n1 T.S. Khaire\, M.A. Khasawneh\, W.P. Pratt\, Jr.\, and N.O. Birge\, Phys. Re v. Lett. 104\, 137002 (2010).
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