Competing ferromagnetic superconducting states in europium-based iron pnictides

Abstract

In europium-based iron pnictides superconducting Fe-planes can be influenced by a Zeeman field originated from the neighboring Eu-planes. The field tends to induce spin-density waves with a ferromagnetic average which coexists with the superconducting order by forming complementary patterns of the superconducting and magnetic order parameters in a Fulde-Ferrell-Larkin-Ovchinnikov phase and a two-dimensional textured-superconducting phase. The hard gap around the Fermi energy disappears in these fragile inhomogeneous superconducting states, which features, instead, V-shaped spin-resolved local density of states. The inhomogeneous states are also competing with either a homogeneous superconducting or a homogeneous ferromagnetic state, manifesting the intertwining influences of the magnetic orders in Fe and Eu planes, the spin-density wave band structure, and the superconducting pairing order.

arXiv comment7pages,11figures

References in corpus (41)

• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• Fermi surface nesting induced strong pairing in iron-based superconductors
• A Sharp Peak of the Zero-Temperature Penetration Depth at Optimal Composition in BaFe2(As1-xPx)2
• Detection of a Cooper-Pair Density Wave in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$
• Connection between charge-density-wave order and charge transport in the cuprate superconductors
• Observation of a Robust Zero-energy Bound State in Iron-based Superconductor Fe(Te,Se)
• Inhomogeneous phase formation on the border of itinerant ferromagnetism
• Possible re-entrant superconductivity in EuFe2As2 under pressure
• Interplay of antiferromagnetism, ferromagnetism and superconductivity in EuFe_2(As_1-xP_x)_2 single crystals
• Electronic structure of heavily electron-doped BaFe${}_{1.7}$Co${}_{0.3}$As${}_2$ studied by angle-resolved photoemission
• Superconductivity and Ferromagnetism in Hole-Doped RbEuFe${}_4$As${}_4$
• Unusual magnetic susceptibility anisotropy in untwinned La_{2-x}Sr_xCuO_4 single crystals in the lightly-doped region
• Superconductivity and local-moment magnetism in Eu(Fe${}_{0.89}$Co${}_{0.11}$)${}_2$As${}_2$
• Coexistence of Superconductivity and Ferromagnetism in P-doped EuFe2As2
• Nonmagnetic Impurity Resonances as a Signature of Sign-Reversal Pairing in the FeAs-based Superconductors
• Microscopic study of the Fulde-Ferrell-Larkin-Ovchinnikov state in an all-organic superconductor
• EuFe2(As1-xPx)2: reentrant spin glass and superconductivity
• Fulde-Ferrell-Larkin-Ovchinnikov state in disordered s-wave superconductors
• The Fulde-Ferrell-Larkin-Ovchinnikov state in pnictides
• Coexisting spin resonance and long-range magnetic order of Eu in EuRbFe${}_4$As${}_4$
• Interplay between superconductivity and magnetism in K-doped EuFe2As2
• Magnetic structure of superconducting Eu(Fe0.82Co0.18)2As2 as revealed by single-crystal neutron diffraction
• Vortex states in hole-doped iron-pnictide superconductors
• Reentrant Superconductivity in Eu(Fe1-xIrx)2As2
• Spin-Density-Wave and Asymmetry of Coherence Peaks in iron-Pnictide Superconductors from a two-orbital model
• Unique interplay between superconducting and ferromagnetic orders in EuRbFe${}_4$As${}_4$
• Impurity-induced configuration-transition in the Fulde-Ferrell-Larkin-Ovchinnikov state of a d-wave superconductor
• Superfluid density measurements of Ba(CoxFe1-x)2As2 films near optimal doping
• Incorporation of charge- and pair-density-wave states into the one-band model of d-wave superconductivity
• Strong coupling between Eu2+ spins and Fe2As2 layers in EuFe1.9Co0.1As2 observed with NMR
• Impurity-induced quasiparticle interference in the parent compounds of iron-pnictide superconductors
• Optical investigations of the chemical pressurized EuFe2(As1-xPx)2: an s-wave superconductor with strong interband interaction
• Quantum phase transition in the Fulde-Ferrell-Larkin-Ovchinnikov states of a two dimensional d-wave superconductor upon increasing the exchange field
• Effect of Ni-doping on magnetism and superconductivity in Eu0.5K0.5Fe2As2
• Domain Walls in Normal and Superconducting States of Iron Pnictides
• Superfluid density in the $s_{\pm }$-wave state of clean iron-based superconductors
• Exciton Condensate Modulation in Electron-Hole Bilayers: A Real-Space Visualization
• Possible pairing symmetry in the FeSe-based superconductors determined by quasiparticle interference
• Tunneling interstitial impurity in iron-chalcogenide based superconductors
• Anomalous sharp peak in the London penetration depth induced by the nodeless-to-nodal superconducting transition in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Effects of pressure and magnetic field on the re-entrant superconductor Eu(Fe${}_{0.93}$Rh${}_{0.07}$)${}_2$As${}_2$