  We report on mutual proximity effects in d-wave superconductor/half-metal
heterostructures which correspond to systems composed of high-Tc cuprates and
manganite materials. In our study, proximity effects are induced by the
interplay of two separate interface effects: spin-mixing (or rotation) surface
scattering and spin-flip scattering. The surface spin-mixing scattering
introduces spin-triplet pairing correlations in superconducting side; as a
result, Andreev bound states are formed at energies within the superconducting
gap. The spin-flip scattering introduces not only long range equal-spin pairing
amplitudes in the half-metal, but also an exotic magnetic proximity effect
extending into the superconductor.
