Mesoscale Phase Separation of Skyrmion-Vortex Matter in Chiral-Magnet–Superconductor Heterostructures

José F. Neto; Clécio C. de Souza Silva

doi:10.1103/PhysRevLett.128.057001

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Mesoscale Phase Separation of Skyrmion-Vortex Matter in Chiral-Magnet–Superconductor Heterostructures

José F. Neto, Clécio C. de Souza Silva

DOI 10.1103/PhysRevLett.128.057001 · Physical Review Letters

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Abstract

We investigate theoretically the equilibrium configurations of many magnetic skyrmions interacting with many superconducting vortices in a superconductor–chiral-magnet bilayer. We show that miscible mixtures of vortices and skyrmions in this system break down at a particular wave number for sufficiently strong coupling, giving place to remarkably diverse mesoscale patterns: gel, stripes, clusters, intercalated stripes, and composite gel-cluster structures. We also demonstrate that, by appropriate choice of parameters, one can thermally tune between the homogeneous and density-modulated phases.