Fig. 5: A schematic diagram of a racetrack memory method using the DDI skyrmion. | Nature Communications

Fig. 5: A schematic diagram of a racetrack memory method using the DDI skyrmion.

From: Chirality flips of skyrmion bubbles

Fig. 5

The bubbles with uniform chirality move under an electonic beam which can change the in-plane swirling of those bubbles. Then STT effect seperates those bubbles to diffferent sides of the track and two sensors may read the corresponding  spin texture as the desired signal information.

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