Skyrmion-(Anti)Vortex Coupling in a Chiral Magnet-Superconductor Heterostructure
arXiv:2103.09808 · doi:10.1103/PhysRevLett.126.117205
Abstract
We report experimental coupling of chiral magnetism and superconductivity in [IrFeCoPt]/Nb heterostructures. The stray field of skyrmions with radius ~50nm is sufficient to nucleate antivortices in a 25nm Nb film, with unique signatures in the magnetization, critical current and flux dynamics, corroborated via simulations. We also detect a thermally-tunable Rashba-Edelstein exchange coupling in the isolated skyrmion phase. This realization of a strongly interacting skyrmion-(anti)vortex system opens a path towards controllable topological hybrid materials, unattainable to date.
6 pages, 4 figures
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