Skyrmion-(Anti)Vortex Coupling in a Chiral Magnet-Superconductor Heterostructure

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.

arXiv comment6 pages, 4 figures

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• Topological Superconductivity Mediated by Skyrmionic Magnons
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• Aspects of topological superconductivity in 2D systems: noncollinear magnetism, skyrmions, and higher-order topology
• Topological Superconductivity Induced by Magnetic Texture Crystals
• Materials challenges for SrRuO3: from conventional to quantum electronics
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• Mesoscale phase separation of skyrmion-vortex matter in chiral magnet-superconductor heterostructures
• Materials for Quantum Technologies: a Roadmap for Spin and Topology
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• Topological superconductivity mediated by magnons of helical magnetic states
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• Topological phase transitions in superconductors with chiral symmetry
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