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SYTS: Symposium Topological Superconductor-Magnet Heterostructures

SYTS 1: Topological Superconductor-Magnet Heterostructures

SYTS 1.2: Hauptvortrag

Donnerstag, 30. März 2023, 15:30–16:00, HSZ 01

Topological landscaping in magnet-superconductor heterostructures — •Sebastián A. Díaz — University of Duisburg-Essen, Duisburg, Germany

Magnet-superconductor heterostructures, due to the rich interplay between their adjacent order parameters, are fertile grounds for novel topological phenomena. Our theoretical studies demonstrate that topological defects in the magnetic order parameter lend themselves as versatile tools to landscape the superconducting order and its topological excitations. A chain of antiferromagnetic skyrmions induces topological superconductivity and supports Majorana bound states - the building blocks of topological quantum computing [1]. Ferromagnetic skyrmions coupled to superconducting vortices form a bound pair that can be used to braid Majorana bound states [2]. These findings strongly suggest that magnet-superconductor heterostructures are ideal arenas to further explore how magnetism and superconductivity influence each other to engineer and manipulate their order parameters and topological excitations.
[1] S. A. Díaz et al., Phys. Rev. B 104, 214501 (2021)
[2] J. Nothhelfer et al., Phys. Rev. B 105, 224509 (2022)