Unique phase diagram with narrow superconducting dome in EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ due to Eu${}^{2+}$ local magnetic moments

Abstract

The interplay between superconductivity and Eu${}^{2+}$ magnetic moments in EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ is studied by electrical resistivity measurements under hydrostatic pressure on $x=0.13$ and $x=0.18$ single crystals. We can map hydrostatic pressure to chemical pressure $x$ and show, that superconductivity is confined to a very narrow range $0.18\le x\le 0.23$ in the phase diagram, beyond which ferromagnetic (FM) Eu ordering suppresses superconductivity. The change from antiferro- to FM Eu ordering at the latter concentration coincides with a Lifshitz transition and the complete depression of iron magnetic order.

arXiv comment4 pages

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• Superconductivity and Ferromagnetism in Hole-Doped RbEuFe${}_4$As${}_4$
• Coexistence of Superconductivity and Ferromagnetism in P-doped EuFe2As2
• EuFe2(As1-xPx)2: reentrant spin glass and superconductivity
• Thermopower as sensitive probe of electronic nematicity in iron pnictides
• Magnetic structure of the Eu2+ moments in superconducting EuFe2(As1-xPx)2 with x = 0.19
• When superconductivity does not fear magnetism: Insight into electronic structure of RbEuFe${}_4$As${}_4$
• Local and collective magnetism of EuFe${}_2$As${}_2$
• Evolution of the multiband RKKY interaction: Application to iron pnictides and chalcogenides
• Evidence of Spontaneous Vortex Ground State in An Iron-Based Ferromagnetic Superconductor
• Helical structures in layered magnetic superconductors due to indirect exchange interactions mediated by interlayer tunneling
• Whether it is possible to stabilize the 1144-phase pnictides with tri-valence cations?
• Optical properties of superconducting EuFe2(As1-xPx)2
• High-Pressure Phase Diagram of NdFeAsO${}_{0.9}$F${}_{0.1}$: Disappearance of superconductivity on the verge of ferromagnetism from nd moments
• Reentrant phases in electron-doped ${\text{EuFe}}_2{\text{As}}_2$: spin glass and superconductivity
• Electronic Scattering Effects in Europium-Based Iron Pnictides
• Complex vortex-antivortex dynamics in the magnetic superconductor EuFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• Interplay of magnetism and superconductivity in EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ single crystals probed by muon spin rotation and ${}^{57}$Fe Mössbauer spectroscopy
• Effects of $c/a$ Anisotropy and Local Crystal Structure on Superconductivity in $A\mathrm{F}{\mathrm{e}}_2({\mathrm{As}}_{1-x}{\mathrm{P}}_x{)}_2$ ($A$=Ba${}_{1-y}$Sr${}_y$, Sr${}_{1-y}$Ca${}_y$ and Eu)
• Correlation between intercalated magnetic layers and superconductivity in pressurized EuFe2(As0.81P0.19)2
• Fluence dependent femtosecond quasi-particle and Eu^{2+} -spin relaxation dynamics in EuFe_{2}(As,P)_{2}
• Multiple magnetic orders discovered in the superconducting state of EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Spin waves and high-frequency response in layered superconductors with helical magnetic structure