Influence of sloped electric field on magnetic-field-induced domain wall creep in a perpendicularly magnetized Co wire

A creep motion of the magnetic domain wall (DW) in a perpendicularly magnetized Co wire, where the DW energy is artificially varied by applying a sloped electric field, is studied. Under the sloped electric field and a constant external magnetic field, the DW velocity gradually changes according to the position of the wire owing to the spatially varying DW energy. Although the sloped DW energy can be a source to drive a DW, no clear electric-field-induced DW motion is observed, most likely because the effective magnetic field induced by the sloped electric field is very small in the present system.

研究了垂直磁化钴线中磁畴壁（DW）的蠕变运动，其中通过施加倾斜电场人为地改变畴壁能量。在倾斜电场和恒定外磁场作用下，由于畴壁能量在空间上的变化，畴壁速度根据导线位置逐渐改变。尽管倾斜的畴壁能量可以是驱动畴壁的一个源，但没有观察到明显的电场诱导的畴壁运动，很可能是因为在当前系统中倾斜电场诱导的有效磁场非常小。