Dynamics of Magnetic Domain Walls Under Their Own Inertia

Abstract

Moving Walls The current-induced movement of magnetic domain walls in magnetic nanowires is a candidate for a new architecture in logic processing and memory. Controlling the motion and position of the domain walls as they move along the wires in excess of 100 meters per second requires an understanding of the processes involved. Thomas et al. (p. 1810 ) investigated the dynamics of magnetic domain wall motion, looking at the acceleration, constant motion, and deceleration processes in detail. The whole process could be described in terms of the inertia of the domain wall. The distance traveled was simply proportional to the length of the current pulse used to move the wall, which should simplify implementation in a circuit or network architecture.