Direct Observation of Current-Induced Motion of a 3D Vortex Domain Wall in Cylindrical Nanowires.

Yurii P IvanovAndrey ChuvilinSergei LopatinHanan MohammedJurgen Kosel

Published in: ACS applied materials & interfaces (2017)

The current-induced dynamics of 3D magnetic vortex domain walls in cylindrical Co/Ni nanowires are revealed experimentally using Lorentz microscopy and theoretically using micromagnetic simulations. We demonstrate that a spin-polarized electric current can control the reversible motion of 3D vortex domain walls, which travel with a velocity of a few hundred meters per second. This finding is a key step in establishing fast, high-density memory devices based on vertical arrays of cylindrical magnetic nanowires.

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