Charge doping versus disorder in CeFeAsO: do the in- and out-of-plane dilutions play the same role?

Abstract

We provide direct experimental evidence for the identical effect of the in-plane Fe${}_{1-x}$Co${}_x$ and of the out-of-plane O${}_{1-x}$F${}_x$ chemical dilutions on the itinerant spin-density-wave (SDW) magnetic phase in CeFeAsO. Remarkably, the suppression of SDW is not sensitive at all to the different kinds of disorder introduced in the two cases. Still, it is clearly shown that the sizeable in-plane disorder induced by the Fe${}_{1-x}$Co${}_x$ substitution is highly effective in suppressing $T_{\text{c}}$. Differently from what is observed in CeFeAsO${}_{1-x}$F${}_x$, the ordered magnetic phase of the Ce sublattice is preserved throughout the whole phase diagram in CeFe${}_{1-x}$Co${}_x$AsO ($x\le 0.2$). An intriguing effect is encountered, whereby the magnetic coupling among Ce${}^{3+}$ ions is enhanced by the superconducting phase.

8 pages (Main text: 4 pages. Paper merged with supplemental information)

References in corpus (27)

• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• The electronic phase diagram of the LaO1-xFxFeAs superconductor
• Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1-xCox)2As2
• Superconductivity in Co-doped LaFeAsO
• Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation
• Where Are the Extra d Electrons in Transition-Metal Substituted Fe Pnictides?
• Interplay of Rare Earth and Iron magnetism in RFeAsO with R = La, Ce, Pr, and Sm: A muon spin relaxation study and symmetry analysis
• Enhancement of $T_c$ by disorder in underdoped iron pnictides
• Magnetic-superconducting phase boundary of SmFeAsO${}_{1-x}$F${}_x$ studied via muon spin rotation: Unified behavior in a pnictide family
• MuSR studies of RE(O,F)FeAs (RE = La, Nd, Ce) and LaOFeP systems: possible incommensurate/stripe magnetism and superfluid density
• Probing the role of Co substitution in the electronic structure of iron-pnictides
• Local moment versus Kondo behavior of the 4f-electrons in rare-earth iron oxypnictides
• Muon spin rotation study of magnetism and superconductivity in Ba(Fe1-xCox)2As2 single crystals
• Common effect of chemical and external pressures on the magnetic properties of RECoPO (RE = La, Pr)
• Effect of external pressure on the magnetic properties of LnFeAsO (Ln = La, Ce, Pr, Sm)
• Ferromagnetism and superconductivity in P-doped CeFeAsO
• Superconductivity at 11.3 K induced by cobalt doping in CeOFeAs
• Nanoscopic coexistence of magnetic and superconducting states within the FeAs layers of CeFeAsO1-xFx
• Electronic structure of single-crystalline Sr(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ probed by x-ray absorption spectroscopy: Evidence for isovalent substitution of Fe${}^{2+}$ by Co${}^{2+}$
• Coupling between 4f and itinerant electrons in SmFeAsO1-xFx (0.15 < x < 0.2) superconductors: an NMR study
• AC susceptibility investigation of vortex dynamics in nearly-optimally doped REFeAsO${}_{1-x}$F${}_x$ superconductors (RE = La, Ce, Sm)
• Evolution of the multiband RKKY interaction: Application to iron pnictides and chalcogenides
• 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
• Tunable interplay between 3d and 4f electrons in Co-doped iron pnictides
• Competing orders suppressed by disorder around a hidden quantum critical point in cuprate high Tc superconductors
• Phase separation at the magnetic-superconducting transition in La${}_{0.7}$Y${}_{0.3}$FeAsO${}_{1-x}$F${}_x$

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• Common effect of chemical and external pressures on the magnetic properties of $R$CoPO ($R$ = La, Pr, Nd, Sm). II
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• Effect of Mn Substitution on Superconductivity in PrFeAs(O,F): Role of Magnetic Impurities
• Effect of external pressure on the magnetic properties of $R$CoAsO ($R$ = La, Pr, Sm): a $\mu$SR study