2012/06/11 by J. Vogel, Jan Vogel, M. Bonfim +14 · 2 citations
Materials Science · Physics and Astronomy · #Magnetic Properties and Applications #Magnetic properties of thin films #Theoretical and Computational Physics #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.108.247202
published as Physical Review Letters 108 (2012) 247202
openalex publication_date 2012/06/11 · arxiv created 2012/06/21 · arxiv updated 2012/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Domain wall motion induced by nanosecond current pulses in nanostripes with perpendicular magnetic anisotropy (Pt/Co/AlO(x)) is shown to exhibit negligible inertia. Time-resolved magnetic microscopy during current pulses reveals that the domain walls start moving, with a constant speed, as soon as the current reaches a constant amplitude, and no or little motion takes place after the end of the pulse. The very low "mass" of these domain walls is attributed to the combination of their narrow width and high damping parameter α. Such a small inertia should allow accurate control of domain wall motion by tuning the duration and amplitude of the current pulses.