We present a theoretical model for the proximity effect in F–SFF–F structures (where F is a
ferromagnet and S is a superconductor) with non-collinear magnetization vectors in the F-layers
and with arbitrary magnitudes of exchange fields. The electrical conductance of these structures
is analyzed within the Keldysh–Usadel formalism in the diffusive regime as a function of the
misorientation angle between magnetizations of the F-layers and transparencies of the SF and FF
interfaces. We show that long-range triplet superconducting correlations manifest themselves
either as a zero-bias peak in the case of perfect transparency of the FF interface, or as a two-peak
structure in the case of finite transparency. The predicted features may serve as a diagnostic tool
for the characterization of interfaces in superconducting hybrid structures
