Size of stripe domains in a superconducting ferromagnet

Abstract

In a superconducting ferromagnet, the superconducting state appears in the ferromagnetic phase where usually a domain structure has already developed. We study the influence of the superconducting screening currents on a stripe structure with out-of-plane magnetization, in a film of arbitrary thickness. We find that superconductivity always induces a shrinkage of the domains, and there is a critical value of penetration depth below which a mono-domain structure is more stable than the periodic one. Furthermore we investigate the possible different effects of singlet and triplet superconductivity on the domain width, as well as the conditions for the existence of vortices in the domains. The obtained results are then discussed in light of the experimental data of superconducting ferromagnets URhGe, UGe2, and UCoGe.

10 pages, 13 figures

References in corpus (7)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Unusual upper critical field of the ferromagnetic superconductor UCoGe
• Properties of Ferromagnetic Superconductors
• Superconductivity Reinforced by Magnetic Field and the Magnetic Instability in Uranium Ferromagnets
• The superconducting ferromagnet UCoGe
• Thermal expansion of the superconducting ferromagnet UCoGe
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Cited by in corpus (9)

• Review of U-based Ferromagnetic Superconductors: Comparison between UGe2, URhGe, and UCoGe
• Magnon radiation by moving Abrikosov vortices in ferromagnetic superconductors and superconductor-ferromagnet multilayers
• Theory of the magnetic domains phases in ferromagnetic superconductors
• Exact asymptotic behavior of magnetic stripe domain arrays
• Superconductivity driven helical magnetic structure in EuRbFe${}_4$As${}_4$ ferromagnetic superconductor
• Phase transitions in the domain structure of ferromagnetic superconductors
• Theory of Self-Induced Vortex State in Ferromagnetic Superconductors
• Theory of type-II superconductivity in ferromagnetic metals with triplet pairing
• Magnetically-controlled Vortex Dynamics in a Ferromagnetic Superconductor