ABSTRACT
This chapter is devoted to a review on recent numerical studies dealing with racetrack-type applications of magnetic chiral skyrmions, where topologically stable skyrmions are used to store binary information. Since the theoretical prediction and experimental observation of skyrmions in magnetic materials, inspired by the domain wall (DW)-based racetrack memories, a number of racetrack-type applications of skyrmions have been proposed and investigated, such as the skyrmion-based racetrack memories, logic gates, and transistor-like devices. An overview is provided on the skyrmion-based racetrack memories where skyrmions are demonstrated to be driven and controlled by spin-polarized currents and spin waves (SWs). A review is then given on the logic computing and transistor-like functions of skyrmions in racetracks manipulated by spin-polarized currents and electric fields. Finally, a section of this chapter is devoted to a recent novel approach that is proposed to improve the transport reliability of skyrmions by eliminating the detrimental skyrmion Hall effect (SkHE) in racetrack-type applications of skyrmions.
