Abstract
We report a numerical study on the efficient and controllable suppression of the Walker breakdown along nanowires by positioning nanogaps with periodicity matching to that of transformational spin structure of the magnetic domain wall. While the Walker breakdown is suppressed, the transverse spin structure is found to be stably maintained without the formation of antivortex core throughout the propagation, shedding a light in faster spintronic devices based on the domain wall motion.
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