Excitation of magnetization oscillations in nanostructures by a flow of electrons with a planar spin polarization

Abstract

The results of numerical simulation of the magnetization oscillations induced due to the spin transfer effect in a CoFeB/Cu/CoFeB layered nanostructure with a planar magnetization of the pinned layer, when an electric current flows perpendicular to the plane of the structure, are presented. It is shown that the excitation of magnetization oscillations in the structure by an electric current is possible both in the presence and absence of an external magnetic field depending on the easy-axis orientation of the free layer. The dependence of the frequency of magnetization oscillations on the current density and the magnetic damping parameter, as well as the dependence of the threshold current density on the demagnetizing factor has been determined.

Keywords

• колебания намагниченности
• ферромагнитные наноструктуры
• эффект переноса спина
• спин-поляризованный ток