METHOD FOR DETERMINING THE CURRENT AND rotational moment in a multilayer structure in the strong coupling approximation

摘要

FIELD: information technology.;SUBSTANCE: method of determining values of current and spin rotary moment in magnetic multilayer structures consisting of alternating ferromagnetic and nonmagnetic layers, at different applied voltages and while varying mutual orientation of magnetisation of the layers, wherein the disclosed method involves the following steps: determining parameters of the multilayer system which is to be used as a magnetic memory cell, particularly, the number of layers in the multilayer system is calculated, characteristics of the layers are determined, as well as lattice parameters, the number of layers in the multilayers, angles of magnetisation on the OX and OY axes; boundary s-s and d-d transfer integrals are calculated for each layer; based on the obtained values, boundary transfer integrals and the position of centres s and d of electrons of different spins of conducting zones of all layers are calculated; the rotary moment is calculated as a function of the applied voltage.;EFFECT: method enables to design non-volatile magnetic memory cells with predetermined parameters.;2 cl, 3 dwg, 3 tbl