Vortex Dynamics in Ferromagnetic Superconductors: Vortex Clusters, Domain Walls and Enhanced Viscosity

Abstract

We demonstrate that there is a long-range vortex-vortex attraction in ferromagnetic superconductors due to polarization of the magnetic moments. Vortex clusters are then stabilized in the ground state for low vortex densities. The motion of vortex clusters driven by the Lorentz force excites magnons. This regime becomes unstable at a threshold velocity above which domain walls are generated for slow relaxation of the magnetic moments and the vortex configuration becomes modulated. This dynamics of vortices and magnetic moments can be probed by transport measurements.

6 pages and 3 figures

References in corpus (3)

• Determination of the phase diagram of the electron doped superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Vortex Viscosity in Magnetic Superconductors Due to Radiation of Spin Waves
• Prediction of polaron-like vortices and dissociation depinning transition in magnetic superconductors: The example of ErNi2B2C

Cited by in corpus (7)

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• Early stages of magnetization relaxation in superconductors
• Theory of Self-Induced Vortex State in Ferromagnetic Superconductors
• Effective penetration length and interstitial vortex pinning in superconducting films with regular arrays of defects
• Polaron-like vortices, dissociation transition and self induced pinning in magnetic superconductors