Topological superconductivity induced by a triple-Q magnetic structure

Abstract

We demonstrate that the recently discovered triple-Q (3Q) magnetic structure, when embedded in a magnet-superconductor hybrid (MSH) system, gives rise to the emergence of topological superconductivity. We investigate the structure of chiral Majorana edge modes at domain walls, and show that they can be distinguished from trivial in-gap modes through the spatial distribution of the induced supercurrents. Finally, we show that topological superconductivity in 3Q MSH systems is a robust phenomenon that does not depend on the relative alignment of the magnetic and superconducting layers, or on the presence of electronic degrees of freedom in the magnetic layer.

arXiv comment5 pages, 4 figures, plus supplemental information

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Cited by in corpus (20)

• Skyrmion Control of Majorana States in Planar Josephson Junctions
• Topological superconductivity and Majorana states in low-dimensional systems
• Antiferromagnetism-driven two-dimensional topological nodal-point superconductivity
• Aspects of topological superconductivity in 2D systems: noncollinear magnetism, skyrmions, and higher-order topology
• Topological Superconductivity Induced by Magnetic Texture Crystals
• Coexistence of Antiferromagnetism and Superconductivity in Mn/Nb(110)
• Domain Walls in a Row-Wise Antiferromagnetic Mn Monolayer
• Topological-chiral magnetic interactions in ultrathin films at surfaces
• Coupling of the triple-Q state to the atomic lattice by anisotropic symmetric exchange
• Higher order exchange driven noncoplanar magnetic state and large anomalous Hall effects in electron doped kagome magnet Mn${}_3$Sn
• Mechanisms for Magnetic Skyrmion Catalysis and Topological Superconductivity
• Anatomy of Spin and Current Generation from Magnetization Gradients in Topological Insulators and Rashba Metals
• Topological superconductivity in a magnetic-texture coupled Josephson junction
• Anomalous valley Hall effect in monolayer chromium-based triple-Q magnets
• Antiferromagnetic order of topological orbital moments in atomic-scale skyrmion lattices
• Majorana vortex modes in spin-singlet chiral superconductors with noncollinear spin ordering: Local density of states study
• Many-body Chern insulator in the Kondo lattice model on a triangular lattice
• Entropy-driven phase transition in a non-collinear antiferromagnet due to higher-order exchange interactions
• The Non-collinear Path to Topological Superconductivity
• New mechanisms to engineer magnetic skyrmions and topological superconductors