Spin Current Driven Magnetic Skyrmion Motion on a Nanotube

Magnetic skyrmions, observed in chiral magnets have quantized topological charge and prove to be a potential candidate in spintronic devices due to their nanoscale size and magnificent energy efficiency. It is indispensable to realize the skyrmion in confined and constricted geometries to design skyrmion-based spintronics devices. However, due to the non-trivial topology of skyrmions, the trajectory of its motion gets deviated from the longitudinal motion (Skyrmion Hall Effect; SkHE) which causes the skyrmion getting destroyed or annihilated at the edge of the nanotrack. Here, we investigate by using micromagnetic simulations, the spin-current driven motion of a magnetic skyrmion on a nanotube which is edgeless by varying various magnetic parameters. We find that the skyrmion moves on the nanotube smoothly with a uniform motion after experiencing an acceleration in the initial stages of its motion without annihilating at the edges due to Skyrmion Hall Effect. Our results, therefore, lead the way to design skyrmion-based devices by getting rid of the issue of skyrmion getting annihilated at the edges in planar structures.