Ferrimagnetic materials are composed of several different, non-parallel but coupled magnetic sublattices. When a spin current is injected in a ferrimagnet, it can exert different torques on the sublattices. Moreover, the dynamical response of the ferrimagnet is also fundamentally marked by its multiple spin populations. This makes ferrimagnetic spintronics intrinsically distinct from the usual ferromagnetic case, and makes it interesting both to the study of its fundamental aspects as well as to applications. Indeed, recent results — be it the higher mobility of current-driven domain walls and skyrmions in ferrimagnets, or the very large spin current generation in ferrimagnets — illustrate the great potential of ferrimagnetic materials for spintronic devices.
This Special Issue aims to cover the recent developments of the complete field of Ferrimagnetic Spintronics, from the study of materials, modelling of its dynamics, driving of magnetic textures, up to applications. It will cover the study of the origin of spin currents in ferrimagnets and their effects, be it on ferrimagnetic textures and spinwaves or on fast demagnetization and switching processes.
Guest Editors: Lucas Caretta, Claudia Felser, Se Kwon Kim, Thomas Ostler, Juan-Carlos Rojas-Sánchez, and João Sampaio