Investigation and Field-Driven Control of Skyrmions in 3D Racetrack Nanowires

Skyrmion-based racetrack memory is a promising candidate for next-generation computing, offering high-density, low-power, and non-volatile data storage. While significant progress has been made, experimental demonstrations have so far been restricted to planar architectures. In this beamtime, we will explore the controlled nucleation and stability of skyrmions in 3D racetrack nanowires, leveraging advanced nanofabrication techniques such as focused electron beam induced deposition (FEBID) and multilayer sputtering. Using shadow XMCD-PEEM, we will investigate the magnetization reversal process, including skyrmion nucleation under external magnetic fields, in two multilayer systems: Ta/CoFeB/MgO, which supports large skyrmions (500–1000 nm), and Pt/Co/Al, where smaller skyrmions (~200 nm) form. By comparing skyrmion behavior in 2D and 3D nanowire conduits, we aim to determine the role of 3D nano-scaffolds in skyrmion nucleation, stability, and magnetization dynamics.