Boundary conditions for quasiclassical Green functions at superconductor-ferromagnet interface

The quasiclassical equations of superconductivity for a metal with spin-split conduction band are derived. The boundary conditions for the Green functions at the interface between a ferromagnet and a superconductor are obtained. They are valid for the arbitrary magnitude of exchange splitting of a ferromagnet conduction band. © 2000 Elsevier Science B.V. All rights reserved