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In this paper we present theoretical studies of spin dependent transport inFe/Cr/MgO/Fe tunnel junctions with non-collinear alignment of magnetizations ofmetallic layers comprising these MTJs. Calculations are performed with use ofnon-equilibrium Green function technique in the framework of Keldysh formalism.WKB approximation is used for wave and Green functions in the trapezoidalbarrier region under applied voltage. Electronic structure of ferromagneticelectrodes is modeled with two bands model, i.e. with majority s-electrons andminority d-holes. Furthermore, we introduce s-d hybridization by calculatingthe corresponding perturbation corrections for the wave and Green functions.

The two-bands model of the magnetic tunnel junctions in the Fe/Cr/MgO/Fe structure