  The Andreev reflection (AR) spectroscopy has been used to probe mutual
influence of superconducting pairing and ferromagnetic correlations in contacts
of low-temperature superconductor (S), Pb, and half-metallic ferromagnetic,
La0.65Ca0.35MnO3(LCMO). Two different AR spectra have been observed. In the
contacts without proximity effect, the AR spectra reveal a behavior typical for
superconductor/spin-polarized metal contacts. In the contacts, which we
distinguish as the proximity affected ones, a few unusual effects have been
detected. Namely, we have observed: (i) a spectacular drop in the resistance of
the contacts at the onset of the Pb superconductivity; (ii) a typical for
S/normal nonmagnetic metal contacts, excess current and doubling of the
normal-state conductance; and (iii) a much larger than it should be for
conventional superconductivity ratio of the single-particle gap to the Pb
superconducting transition temperature. The very distinct AR characteristics of
proximity affected contacts observed by us suggest unconventional (triplet)
superconducting pairing and long-range proximity effect at S/LCMO interface.
