  With x-ray absorption spectroscopy we investigated the orbital reconstruction
and the induced ferromagnetic moment of the interfacial Cu atoms in
YBa$_2$Cu$_3$O$_{7}$/La$_{2/3}$Ca$_{1/3}$MnO$_3$ (YBCO/LCMO) and
La$_{2-x}$Sr$_{x}$CuO$_4$/La$_{2/3}$Ca$_{1/3}$MnO$_3$ (LSCO/LCMO) multilayers.
We demonstrate that these electronic and magnetic proximity effects are coupled
and are common to these cuprate/manganite multilayers. Moreover, we show that
they are closely linked to a specific interface termination with a direct
Cu-O-Mn bond. We furthermore show that the intrinsic hole doping of the cuprate
layers and the local strain due to the lattice mismatch between the cuprate and
manganite layers are not of primary importance. These findings underline the
central role of the covalent bonding at the cuprate/manganite interface in
defining the spin-electronic properties.
