Abstract
A non-magnetic conductive pad on top of a ferromagnetic nanowire will both shunt the current injected into the nanowire and generate an in-plane Oersted field perpendicular to the wire. Micromagnetic simulations have shown that a current-driven 360° transverse domain wall (DW) can annihilate, pass through, or be pinned at the shunt pad depending on the magnitude of the driving spin current and the geometry of the pad. The response of the 360° DW to the Oersted field depends on the chirality of the DW, enabling the shunt pad to function as a chirality filter for 360° DWs, which may be useful in DW-based memory devices.
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