Skyrmion-(Anti)Vortex Coupling in a Chiral Magnet-Superconductor Heterostructure
Skyrmion-(Anti)Vortex Coupling in a Chiral Magnet-Superconductor Heterostructure
We report experimental coupling of chiral magnetism and superconductivity in [IrFeCoPt]/Nb heterostructures. The stray field of skyrmions with radius ≈50 nm is sufficient to nucleate antivortices in a 25 nm Nb film, with unique signatures in the magnetization, critical current, and flux dynamics, corroborated via simulations. We also detect a …