Spin splitting of the electron density of states in thin superconductors in a magnetic field

An analytical method of investigating the spin splitting of the electron states density of thin superconducting films placed in the parallel magnetic field is developed. The calculations are performed for a number of limiting values of the parameters of spin-orbit and spin-exchange interaction of conductivity electrons with the admixture. Dependence of the spin-splitting of the density upon the admixture parameters, magnetic field and energy of elementary excitations is found.