Magnetization Excitation in FeMn Antiferromagnetic Film by Injection of Spins With Current in Thin-Film THz Emitters Structures

This article is devoted to the study of the possibility of excitation of the intrinsic magnetization in the FeMn antiferromagnetic (AFM) film by injecting spins into it with a relatively low current. Such a possibility is shown on the basis of the operation of spin injection THz sources using this effect. It has been shown that the use of this effect in THz spin-injection emitters is of interest both from the point of view of developing theoretical ideas about the magnetic properties of AFMs and from a practical point of view of the use of these sources. New experimental results have been obtained, developing theoretical ideas about the intrinsic magnetization of thin films of AFMs.