Long- to short-range magnetic order in fluorine-doped CeFeAsO

Abstract

The evolution of the antiferromagnetic order parameter in CeFeAsO_{1-x}F_{x} as a function of the fluorine content x was investigated primarily via zero-field muon-spin spectroscopy. The long-range magnetic order observed in the undoped compound gradually turns into a short-range order at x=0.04, seemingly accompanied/induced by a drastic reduction of the magnetic moment of the iron ions. Superconductivity appears upon a further increase in doping (x>0.04) when, unlike in the cuprates, the Fe magnetic moments become even weaker. The resulting phase diagram evidences the presence of a crossover region, where the superconducting and the magnetic order parameters coexist on a nanoscopic range.

References in corpus (20)

• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• Superconductivity in iron-based F-doped layered quaternary compound Nd[O1-xFx]FeAs
• Superconductivity at 52 K in iron-based F-doped layered quaternary compound Pr[O1-xFx]FeAs
• The electronic phase diagram of the LaO1-xFxFeAs superconductor
• Phase transitions in LaFeAsO: structural, magnetic, elastic, and transport properties, heat capacity and Mossbauer spectra
• Magnetism in Fe-based superconductors
• Commensurate Spin Density Wave in LaOFeAs: A Local Probe Study
• Superconductivity at 36 K in Gadolinium-arsenide Oxides GdO${}_{1-x}$F${}_x$FeAs
• Interplay of Rare Earth and Iron magnetism in RFeAsO with R = La, Ce, Pr, and Sm: A muon spin relaxation study and symmetry analysis
• Influence of the rare-earth element on the effects of the structural and magnetic phase transitions in CeFeAsO, PrFeAsO, and NdFeAsO
• Magnetic Ordering and Negative Thermal Expansion in PrFeAsO
• Magnetic-superconducting phase boundary of SmFeAsO${}_{1-x}$F${}_x$ studied via muon spin rotation: Unified behavior in a pnictide family
• Synthesis, crystal structure, microstructure, transport and magnetic properties of SmFeAsO and SmFeAs(O0.93F0.07)
• MuSR studies of RE(O,F)FeAs (RE = La, Nd, Ce) and LaOFeP systems: possible incommensurate/stripe magnetism and superfluid density
• The crystalline electric field as a probe for long range antiferromagnetic order and superconductivity in CeFeAsO${}_{1-x}$F${}_x$
• Transport and infrared properties of SmFeAs(O1-xFx): from SDW to superconducting ordering
• Nanoscopic coexistence of magnetic and superconducting states within the FeAs layers of CeFeAsO1-xFx
• Competing orders suppressed by disorder around a hidden quantum critical point in cuprate high Tc superconductors

Cited by in corpus (22)

• The phase diagrams of iron-based superconductors: theory and experiments
• Effect of external pressure on the magnetic properties of LnFeAsO (Ln = La, Ce, Pr, Sm)
• Charge doping versus disorder in CeFeAsO: do the in- and out-of-plane dilutions play the same role?
• High-$T_{\mathrm{c}}$ superconductivity in undoped ThFeAsN
• Chemical- and hydrostatic-pressure effects on the Kitaev honeycomb material Na${}_2$IrO${}_3$
• A view from inside iron-based superconductors
• Role of Dirac cones in magnetotransport properties of REFeAsO (RE=rare earth) oxypnictides
• The onset of magnetism peaked around x=1/4 in optimally electron-doped LnFe(1-x)Ru(x)AsO(1-y)F(y) (Ln = La, Nd or Sm) superconductors
• Fast recovery of the stripe magnetic order by Mn/Fe substitution in F-doped LaFeAsO superconductors
• Magnetic phase diagram of Ca-substituted EuFe${}_2$As${}_2$
• Spatial competition of the ground states in 1111 iron pnictides
• Slow magnetic fluctuations and superconductivity in fluorine-doped NdFeAsO
• Structural properties and phase diagram of the $La(F{e}_{1-x}R{u}_x)AsO$ system
• Revisiting the phase diagram of LaFe${}_{1-x}$Co${}_x$AsO on single crystals by thermodynamic methods
• Role of magnetic dopants in the phase diagram of Sm1111 pnictides: The Mn case
• Phase separation at the magnetic-superconducting transition in La${}_{0.7}$Y${}_{0.3}$FeAsO${}_{1-x}$F${}_x$
• Crossover between magnetism and superconductivity in low H-doped LaFeAsO
• Nodal-to-nodeless superconducting order parameter in LaFeAs${}_{1-x}$P${}_x$O synthesized under high pressure
• Pressure-Induced Antiferromagnetic Dome in the Heavy-Fermion $Y{b}_{2}P{d}_{2}I{n}_{1-x}S{n}_x$ System
• Unraveling the magnetic ground-state in alkali-metal lanthanide oxide Na${}_2$PrO${}_3$
• Structural investigation of the Sm(Fe1-xRux)As(O0.85F0.15) system: a synchrotron X-ray powder diffraction study
• Effect of external pressure on the magnetic properties of $R$CoAsO ($R$ = La, Pr, Sm): a $\mu$SR study