Fast recovery of the pristine magnetic and structural phases in superconducting LaFeAsO${}_{0.89}$F${}_{0.11}$ by Mn/Fe substitution

Abstract

We report on an experimental study of the effect of Mn impurities in the optimally doped LaFeAsO${}_{0.89}$F${}_{0.11}$ compound. The results show that a very tiny amount of Mn, of the order of 0.1\%, is enough to destroy superconductivity and to recover at low temperatures both the magnetic ground state and the orthorhombic structure of the pristine LaFeAsO parent compound. The results are discussed within a model where electron correlations enhance the Ruderman-Kittel-Kasuya-Yosida interaction among impurities.

References in corpus (20)

• Spin-polarized muons in condensed matter physics
• The electronic phase diagram of the LaO1-xFxFeAs superconductor
• Recent advances in iron-based superconductors toward applications
• Magnetism in Fe-based superconductors
• Studies of Impurity-Doping Effects and NMR Measurement5s of La1111 and/or Nd 1111 Fe-Pnictide Superconductors
• Interplay of Rare Earth and Iron magnetism in RFeAsO with R = La, Ce, Pr, and Sm: A muon spin relaxation study and symmetry analysis
• The phase diagrams of iron-based superconductors: theory and experiments
• Unconventional disorder effects in correlated superconductors
• Correlated trends of coexisting magnetism and superconductivity in optimally electron-doped oxy-pnictides
• The poisoning effect of Mn in LaFe(1-x)Mn(x)AsO(0.89)F(0.11): unveiling a quantum critical point in the phase diagram of iron-based superconductors
• AC susceptibility investigation of vortex dynamics in nearly-optimally doped REFeAsO${}_{1-x}$F${}_x$ superconductors (RE = La, Ce, Sm)
• Mutual independence of critical temperature and superfluid density under pressure in optimally electron-doped superconducting LaFeAsO${}_{1-x}$F${}_x$
• A view from inside iron-based superconductors
• Experimental Evidences for Static Charge Density Waves in Iron Oxy-pnictides
• 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
• Short range magnetic order and effective suppression of superconductivity by manganese-doping in LaFe1-xMnxAsO1-yFy
• Fast recovery of the stripe magnetic order by Mn/Fe substitution in F-doped LaFeAsO superconductors
• Role of magnetic dopants in the phase diagram of Sm1111 pnictides: The Mn case
• Competing effects of Mn and Y doping on the low-energy excitations and phase diagram of La${}_{1-y}$Y${}_y$Fe${}_{1-x}$Mn${}_x$AsO${}_{0.89}$F${}_{0.11}$ iron-based superconductors
• Impurity effects on spin dynamics in magnetic and superconducting iron pnictides and chalcogenides