  We realized point contact spectroscopy experiment on
ferromagnet/superconductor bilayers. Differential conductance curves show
several features that we explained within Bogoliubov-de Gennes formalism
considering the presence of two interfaces in the
normal-metal-tip/ferromagnet/superconductor device. We demonstrate that such
configuration is suitable as local probe of the spin polarization and thickness
of ferromagnetic layer, directly on bilayer areas. This is due to the high
sensitivity of the Andreev surface states to the physical properties of the
ferromagnetic interlayer.
