Theory of the magnetic domains phases in ferromagnetic superconductors

Abstract

Recently discovered superconducting P-doped EuFe${}_2$As${}_2$ compounds reveal the situation when the superconducting critical temperature substantially exceeds the ferromagnetic transition temperature. The main mechanism of the interplay between magnetism and superconductivity occurs to be an electromagnetic one and a short period magnetic domain structure was observed just below Curie temperature [Stolyarov et al., Sci. Adv. \textbf{4}, eaat1061 (2018)]. We elaborate a theory of such transition and demonstrate how the initial sinusoidal magnetic structure gradually transforms into a soliton-like domain one. Further cooling may trigger a first-order transition from the short-period domain Meissner phase to the self-induced ferromagnetic vortex state and we calculate the parameters of this transition. The size of the domains in the vortex state is basically the same as in the normal ferromagnet, but with the domain walls which should generate the set of vortices perpendicular to the vortices in the domains.

arXiv comment6 pages, 4 figures

References in corpus (14)

• Proximity effects in superconductor-ferromagnet heterostructures
• The Puzzle of High Temperature Superconductivity in Layered Iron Pnictides and Chalcogenides
• Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
• Nucleation of superconductivity and vortex matter in superconductor - ferromagnet hybrids
• Ferromagnetism and Superconductivity in Uranium Compounds
• Electrical Resistivity and Specific Heat of EuFe2As2 Single Crystals: Magnetic homologue of SrFe2As2
• Coexistence of Superconductivity and Ferromagnetism in P-doped EuFe2As2
• EuFe2(As1-xPx)2: reentrant spin glass and superconductivity
• Superconductivity and ferromagnetism in EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Reply to "Comment on "Domain Structure in a Superconducting Ferromagnet""
• Coexistence of ferromagnetism and superconductivity in iron based pnictides: a time resolved magnetooptical study
• Visualization of Magnetic Flux Structure in Phosphorus-Doped EuFe${}_2$As${}_2$ Single Crystals
• Size of stripe domains in a superconducting ferromagnet
• Phase transitions in the domain structure of ferromagnetic superconductors

Cited by in corpus (13)

• Interplay between magnetism and superconductivity in UTe2
• Superconductivity driven helical magnetic structure in EuRbFe${}_4$As${}_4$ ferromagnetic superconductor
• Helical structures in layered magnetic superconductors due to indirect exchange interactions mediated by interlayer tunneling
• Topological magnetic order and superconductivity in EuRbFe${}_4$As${}_4$
• Novel magnetic stoichiometric superconductor EuRbFe4As4
• Complex vortex-antivortex dynamics in the magnetic superconductor EuFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• Effect of controlled artificial disorder on the magnetic properties of EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ ferromagnetic superconductor
• The Type-II/Type-I Crossover in Dirty Ferromagnetic Superconductors
• Bulk domain Meissner state in the ferromagnetic superconductor EuFe${}_2$(As${}_{0.8}$P${}_{0.2}$)${}_2$: Consequence of compromise between ferromagnetism and superconductivity
• Magnetically-controlled Vortex Dynamics in a Ferromagnetic Superconductor
• Spontaneous vortex state in a superconductor/ferromagnet nanocomposite
• Spin waves and high-frequency response in layered superconductors with helical magnetic structure
• Breakdown of the critical state in the ferromagnetic superconductor EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$