Singlet-Triplet Mixing in Superconductor-Ferromagnet Hybrid Devices
  We develop a theory which describes hybrid structures consisting out of superconducting and ferromagnetic parts. We give two examples for applications. First, we consider a hybrid structure containing a strong ferromagnet in the ballistic limit. Second, we study for a weak ferromagnet the influence of a domain wall on the superconducting proximity effect. In both cases we account quantitatively for the mixing between singlet and triplet correlations. 
M. Eschrig, J. Kopu, A. Konstandin, J.C. Cuevas, M. Fogelstr\"om, and   G. Sch\"on