Sanghoon Kim

Electrical injection of meron-antimeron pairs into a magnetic domain wall

Topological spin textures, such as merons and antimerons, have garnered significant attention for their potential in spintronic devices due to their inherent topological stability. However, achieving precise electrical control over these topological textures has remained challeng...

Nonreciprocal Vortex Pinning and Re-entrant Superconductivity through Niobium Interface Design

Abrikosov vortex motion in type-II superconductors generates finite resistance under applied current, limiting practical use. Traditional suppression via defect engineering is complex and hard to reproduce. Here, we show that interfacial engineering-specifically, tuning the penet...