Josephson effect through magnetic skyrmion

Abstract

We discover that the multiple degrees of freedom associated with magnetic skyrmions: size, position, and chirality, can all be used to control the Josephson effect and 0-pi transitions occurring in superconductor/magnetic skyrmion/superconductor junctions. In the presence of two skyrmions, the Josephson effect depends strongly on their relative chirality and leads to the possibility of a chirality-transistor effect for the supercurrent where the critical current is changed by several orders of magnitude simply by reversing the chirality of a magnetic skyrmion. Moreover, we demonstrate that the Fraunhofer pattern can show a local minimum at zero flux as a direct result of the skyrmion magnetic texture. These findings demonstrate the rich physics that emerges when combining topological magnetic objects with superconductors and could lead to new perspectives in superconducting spintronics.

5 pages, 5 figures

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Cited by in corpus (18)

• The 2020 Skyrmionics Roadmap
• Skyrmions in Chiral Magnets with Rashba and Dresselhaus Spin-Orbit Coupling
• Anomalous current in diffusive ferromagnetic Josephson junctions
• Skyrmion-(Anti)Vortex Coupling in a Chiral Magnet-Superconductor Heterostructure
• Manipulation of Magnetic Skyrmions by Superconducting Vortices in Ferromagnet-Superconductor Heterostructures
• Interaction of Skyrmions and Pearl Vortices in Superconductor-Chiral Ferromagnet Heterostructures
• Skyrmion-induced bound states in a superconductor
• Interaction of a Neel-type skyrmion and a superconducting vortex
• Aspects of topological superconductivity in 2D systems: noncollinear magnetism, skyrmions, and higher-order topology
• Chirality selective spin interactions mediated by the superconducting current
• Magnetoelectric coupling in superconductor-helimagnet heterostructures
• Repulsion of a Néel-type skyrmion from a Pearl vortex in thin ferromagnet-superconductor heterostructures
• Chirality inversion and radius blow-up of a Néel-type skyrmion by a Pearl vortex
• Supercurrent-induced Skyrmion dynamics and Tunable Weyl points in Chiral Magnet with Superconductivity
• Deformation of a Néel-type Skyrmion in a Weak Inhomogeneous Magnetic Field: Magnetization Ansatz and Interaction with a Pearl Vortex
• Magnetic Skyrmion Lattice by Fourier Transform Method
• Diode effect in a skyrmion-coupled high-temperature Josephson junction
• New mechanisms to engineer magnetic skyrmions and topological superconductors