Figure 4.

Skyrmion‐bubbles shift operation with generation and deletion. a) The initial state of the +z uniform magnetization. b) Generation of two isolated skyrmion‐bubbles by two positive V _v pulses marked as red and yellow circles. c–f) Skyrmion‐bubble shift operation to the left by applying positive V _in pulses. g) Skyrmion‐bubble shift operation to the right by applying a negative V _in pulse. h) Deletion of one skyrmion‐bubble by a negative V _v pulse. i) Skyrmion‐bubble shift to the right by a negative V _in pulse. j) Deletion of one skyrmion‐bubble by a negative V _v pulse described by a red circle. All scale bars: 5 µm.