Yu D., Sui C., Schulz D., Berakdar J., Jia C.

The utility of local fields formed around a biased conductive scanning nanoscale tip is demonstrated for the trapping, tracking, and displacement of magnetic textures hosted by a substrate. The method operates at a low energy cost, is noninvasive, and is highly controllable. Detailed results are presented for the dynamic of a magnetic vortex in the sample beneath the tip. It is shown that the near-field-assisted tracking does not suffer from the usually undesirable transversal motion of magnetic vortices or skyrmions due to the topological Hall effect. Tuning the near field of the tip allows for the generation of packaged skyrmions with different topological charges. The results endorse the potential of near-field engineering for information storage and processing based on topological magnetic structure.

PDF (3422kB)

(For personal use only. Please send an email to our secretary if you need the paper.)