Current-induced spin polarizations in the bulk of topological insulators with inhomogeneous magnetic textures

Abstract

The role of topological insulator (TI) bulk states in the the enormous spin torques recorded at TI/ferromagnet (FM) interfaces is poorly understood. Here we study spin torques due to TI bulk states focusing on magnetized TIs. We find that there is a novel spin transfer torque on an inhomogeneous magnetization, it is small in our idealized