Nested skyrmion bags are topological magnetic structures with tunable topological charge that offer promise for spintronic devices. By combining micromagnetic simulations, Thiele equation analysis, and machine learning, the authors reveal the stability, current-driven dynamics, and efficient prediction of the skyrmion Hall angle in these structures, and demonstrate a proof-of-concept demultiplexer device.
- Rui Li
- Yuge Zhu
- Chendong Jin