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arXiv · 2103.09808

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

A. P. Petrović·M. Raju·X. Y. Tee·A. Louat·I. Maggio-Aprile·R. M. Menezes·M. J. Wyszyński·N. K. Duong·M. Reznikov·Ch. Renner·M. V. Milošević·C. Panagopoulos
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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.

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A. P. Petrović, M. Raju, X. Y. Tee, A. Louat, I. Maggio-Aprile, R. M. Menezes, M. J. Wyszyński, N. K. Duong, M. Reznikov, Ch. Renner, M. V. Milošević, C. Panagopoulos. 2021-03-17. Skyrmion-(Anti)Vortex Coupling in a Chiral Magnet-Superconductor Heterostructure. https://doi.org/10.1103/physrevlett.126.117205

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