Large decrease in the critical temperature of superconducting LaFeAsO0.85 compounds doped with 3% atomic weight of nonmagnetic Zn impurities
arXiv:1006.2874 · doi:10.1103/PhysRevB.82.054506
Abstract
We observed a large decrease of Tc by no more than 3 at.% of Zn doped to the optimized superconductor LaFeAsO0.85 (Tc = 26 K), confirmed by measurements of electrical resistivity, magnetic susceptibility, specific heat, Mössbauer spectroscopy, Hall coefficient, and an electron probe micro-analysis. The rate ~9 K/% is remarkably higher than observations regarding nonmagnetic impurities. The Tc suppression is likely due to pair-breaking caused by scatterings associated with highly localized electronic state of Zn doped into the Fe2As2 layer. If this is true, the Zn result well accords with the theoretical prediction that suggests a sign reversal s-wave pairing model for the Fe pnictide superconductors, unlike other nonmagnetic impurity results.
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References in corpus (42)
- Unconventional sign-reversing superconductivity in LaFeAsO_(1-x)F_x
- Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsOF}
- LaFeAsOF: A low carrier density superconductor near itinerant magnetism
- Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
- Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
- Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
- Pnictogen height as a possible switch between high-T_c nodeless and low-T_c nodal pairings in the iron based superconductors
- Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
- Resonant Spin Excitation in the High Temperature Superconductor Ba0.6K0.4Fe2As2
- Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
- Superconductivity in Co-doped LaFeAsO
- Multiband magnetism and superconductivity in Fe-based compounds
- As NMR studies of superconducting LaOFFeAs
- Violation of Anderson's Theorem for Sign-Reversing s-Wave State of Iron-Pnictide Superconductors
- Superconductivity in SrFe_(2-x)Co_xAs_2: Internal Doping of the Iron Arsenide Layers
- Two-dimensional resonant magnetic excitation in BaFe1.84Co0.16As2
- Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer
- Microwave Penetration Depth and Quasiparticle Conductivity in PrFeAsO_1-y Single Crystals : Evidence for a Full-Gap Superconductor
- Electron Correlations in the Low Carrier Density LaFeAsO0.89F0.11 Superconductor (Tc = 28 K)
- Spin-singlet superconductivity with multiple gaps in PrO0.89F0.11FeAs
- Superconducting gap symmetry of Ba0.6K0.4Fe2As2 studied by angle-resolved photoemission spectroscopy
- Field and Temperature Dependence of the Superfluid Density in LaO_{1-x}F_xFeAs Superconductors: A Muon Spin Relaxation Study
- Superconducting properties of Fe-based layered superconductor LaOFFeAs
- ^{31}P and ^{75}As NMR evidence for a residual density of states at zero energy in superconducting BaFe_2(As_{0.67}P_{0.33})_2
- Studies of Impurity-Doping Effects and NMR Measurement5s of La1111 and/or Nd 1111 Fe-Pnictide Superconductors
- Momentum-resolved superconducting gap in the bulk of BaKFeAs from combined ARPES and SR measurements
- Single crystals of LnFeAsO1-xFx (Ln=La, Pr, Nd, Sm, Gd) and Ba1-xRbxFe2As2: growth, structure and superconducting properties
- Al substitution in MgB2 crystals: influence on superconducting and structural properties
- Superconductivity at 22.3 K in SrFe2-xIrxAs2
- Superconductivity and phase diagrams in 4d- and 5d-metal-doped iron arsenides SrFe_{2-x}M_xAs_2 (M = Rh, Ir, Pd)
- Tailoring the Superconductivity and Antiferromagnetic Order in SrFe2-xRhxAs2
- Superconductivity induced by doping Pd in SrFe2-xPdxAs2
- Valley density-wave and multiband superconductivity in Fe-pnictides
- Muon spin relaxation studies of magnetic order and superfluid density in antiferromagnetic NdOFeAs, BaFe2As2 and superconducting (Ba,K)Fe2As2
- Narrow superconducting window in Ni-doped LaFeAsO
- On the Superconductivity of LaFe1-yCoyAsO1-xFx
- Superconductivity induced by ruthenium substitution in an iron arsenide: investigation of SrFe2-xRuxAs2 (0 <= x <= 2)
- Contrasting Pair-Breaking Effects by Doping Mn and Zn in Ba0.5K0.5Fe2As2
- Impurity-induced in-gap state and Tc in sign-reversing s-wave superconductors: analysis of iron oxypnictide superconductors
- Effect of Zn doping on magnetic order and superconductivity in LaFeAsO
- Specific Heat of Zn-Doped YBa_{2}Cu_3O_{6.95}: Possible Evidence for Kondo Screening in the Superconducting State
- Superconducting properties of the oxygen-vacant iron oxyarsenide TbFeAsO1-x from underdoped to overdoped compositions
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- Exploration of new superconductors and functional materials and fabrication of superconducting tapes and wires of iron pnictides
- Superconductivity suppression of Ba0.5K0.5Fe2-2xM2xAs2 single crystals by substitution of transition-metal (M = Mn, Ru, Co, Ni, Cu, and Zn)
- First-principles calculation of transition-metal impurities in LaFeAsO
- Enhancement of by disorder in underdoped iron pnictides
- Linear decrease of critical temperature with increasing Zn substitution in the iron-based superconductor BaFe1.89-2xZn2xCo0.11As2
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- Zn-impurity effect and interplay of - and -pairings in Fe-based superconductors
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- Antiferromagnetic Spin Fluctuations and Unconventional Nodeless Superconductivity in an Iron-based New Superconductor (Ca_4Al_2O_{6-y})(Fe_2As_2):75As-NQR Study
- Non-magnetic pair-breaking effect on La(Fe_{1-x}Zn_{x})AsO_{0.85} studied by NMR and NQR
- Doping effect of Cu and Ni impurities on the Fe-based superconductor Ba0.6K0.4Fe2As2
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- The effect of Cr impurity to superconductivity in electron-doped BaFe2-xNixAs2
- Effect of Co Impurities on Superconductivity of FeSe0.4Te0.6 single crystals
- Determination of the pairing state in iron-based superconductors through neutron scattering
- Doping evolution of antiferromagnetism and transport properties in the non-superconducting BaFe2-2xNixCrxAs2
- Effect of proton irradiation on the normal state low-energy excitations of Ba(FeRh)As superconductors
- Effects of Zn substitution on the electronic structure of BaFeAs revealed by angle-resolved photoemission spectroscopy
- Impurity effect and suppression to superconductivity in Na(FeCoT)As (T=Cu, Mn)
- Striking Zn impurity effect on the Fe-based superconductor BaFe1.87Co0.13As2
- Q-scan-analysis of the neutron scattering in iron-based superconductors
- Magnetic and electrical properties and carrier doping effects on the Fe-based host compound Sr4Sc2Fe2As2O6
- Effects of the vortices and impurities on the nuclear spin relaxation rate in iron-based superconductors
- Impurity effects on spin dynamics in magnetic and superconducting iron pnictides and chalcogenides
- Study of Ni and Zn doped CeOFeAs: Effect on the structural transition and specific heat capacity
- Impurity effects on electronic transport in ferropnictide superconductors
- Superconducting and critical properties of PrOFe0.9Co0.1As: effect of P doping