To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress Report

Abstract

In this review, the authors present a summary of experimental reports on newly discovered iron-based superconductors as they were known at the end of 2008. At the same time, this paper is intended to be useful for experimenters to know the current status of these superconductors. The authors introduce experimental results that reveal basic physical properties in the normal and superconducting states. The similarities and differences between iron-pnictide superconductors and other unconventional superconductors are also discussed.

20 pages, 32 figures. Open select

References in corpus (80)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsO${}_{1-x}$F${}_x$}
• LaFeAsO${}_{1-x}$F${}_x$: A low carrier density superconductor near itinerant magnetism
• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Spin density wave anomaly at 140 K in the ternary iron arsenide BaFe2As2
• Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
• The superconductivity at 18 K in LiFeAs system
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs
• LiFeAs: An Intrinsic FeAs-based Superconductor with Tc = 18K
• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Magnetism, superconductivity, and pairing symmetry in Fe-based superconductors
• Strong Correlations and Magnetic Frustration in the High Tc Iron Pnictides
• Competing Orders and Spin-Density-Wave Instability in La(O${}_{1-x}$F${}_x$)FeAs
• Superconductivity in iron-based F-doped layered quaternary compound Nd[O1-xFx]FeAs
• Tellurium substitution effect on superconductivity of the alpha-phase Iron Selenide
• Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln=La,Nd)
• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• Nearly Isotropic superconductivity in (Ba,K)Fe2As2
• Origin of the ~150 K Anomaly in LaOFeAs; Competing Antiferromagnetic Superexchange Interactions, Frustration, and Structural Phase Transition
• The electronic phase diagram of the LaO1-xFxFeAs superconductor
• Electronic Structure and Doping in BaFe${}_2$As${}_2$ and LiFeAs: Density Functional Calculations
• Coexistence of the spin-density-wave and superconductivity in the (Ba,K)Fe2As2
• Upper critical fields and thermally-activated transport of Nd(O_0.7F_0.3)FeAs single crystal
• Lattice and magnetic instabilities in CaFe2As2: A single crystal neutron diffraction study
• Crystal structure of the new FeSe1-x superconductor
• Structure and superconductivity of LiFeAs
• Evolution from Itinerant Antiferromagnet to Unconventional Superconductor with Fluorine Doping in La(O_{1-x}F_{x})FeAs Revealed by ^{75}As and ^{139}La Nuclear Magnetic Resonance
• Commensurate Spin Density Wave in LaOFeAs: A Local Probe Study
• ${}^{75}$As NMR studies of superconducting LaO${}_{0.9}$F${}_{0.1}$FeAs
• Crystallographic Phase Transition and High-Tc Superconductivity in LaFeAsO:F
• Microwave Penetration Depth and Quasiparticle Conductivity in PrFeAsO_1-y Single Crystals : Evidence for a Full-Gap Superconductor
• Commensurate Itinerant Antiferromagnetism in BaFe2As2: 75As-NMR Studies on a Self-Flux Grown Single Crystal
• Electron Correlations in the Low Carrier Density LaFeAsO0.89F0.11 Superconductor (Tc = 28 K)
• Iron-based layered superconductor LaO${}_{1-x}$F${}_x$FeAs: an antiferromagnetic semimetal
• Spin-singlet superconductivity with multiple gaps in PrO0.89F0.11FeAs
• Spin and Lattice Structure of Single Crystal SrFe2As2
• Fermi surface of superconducting LaFePO determined by quantum oscillations
• Multiple Nodeless Superconducting Gaps in (Ba0.6K0.4)Fe2As2 Superconductor from Angle-Resolved Photoemission Spectroscopy
• Determination of anisotropic Hc2 up to 60 T in (Ba0.55K0.45)Fe2As2 single crystals
• Critical Fields and Anisotropy of NdO0.82F0.18FeAs Single Crystals
• NMR relaxation rate in superconducting pnictides: extended $s_{\pm }$ scenario
• A possible ground state and its electronic structure of a mother material (LaOFeAs) of new superconductors
• Spin susceptibility, phase diagram, and quantum criticality in the electron-doped high Tc Superconductor Ba[Fe(1-x)Co(x)]2As2
• Upper critical field, anisotropy, and superconducting properties of Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ single crystals
• Superconductivity at 36 K in Gadolinium-arsenide Oxides GdO${}_{1-x}$F${}_x$FeAs
• Superfluid density of the $\pm$s-wave state for the iron-based superconductors
• Structure and Magnetic Order in the NdFeAs(O,F) Superconductor System
• Strong coupling between magnetic and structural order parameters in SrFe2As2
• Lattice and Magnetic structures of PrFeAsO, PrFeAsO0.85F0.15 and PrFeAsO0.85
• Ab initio Derivation of Low-energy Model for Iron-Based Superconductors LaFeAsO and LaFePO
• Magnetic Order of the Iron Spins in NdOFeAs
• 19-F NMR Investigation of Iron-pnictide Superconductor LaFeAsO(0.89)F(0.11)
• Pseudogap and Superconductivity in Iron-Based Layered Superconductor studied by Fluctuation-Exchange Approximation
• Abrupt Emergence of Pressure-Induced Superconductivity of 34 K in SrFe2As2: A Resistivity Study under Pressure
• High pressure synthesis of late rare earth RFeAs(O,F) superconductors; R = Tb and Dy
• Experimental Consequences of the S-wave $\cos (k_x)\cdot \cos (k_y)$ Superconductivity in the Iron-Pnictides
• Spin Ordering in LaOFeAs and Its Suppression in Superconductor LaO0.89F0.11FeAs Probed by Mössbauer Spectroscopy
• 59-Co and 75-As NMR Investigation of Electron-Doped High Tc Superconductor BaFe(1.8)Co(0.2)As(2) (Tc = 22K)
• Muon spin relaxation studies of magnetic order and superfluid density in antiferromagnetic NdOFeAs, BaFe2As2 and superconducting (Ba,K)Fe2As2
• Evidence for Unconventional Superconductivity in Arsenic-Free Iron-Based Superconductor FeSe : A ^77Se-NMR Study
• On the Superconductivity of LaFe1-yCoyAsO1-xFx
• Nuclear magnetic relaxation and superfluid density in Fe-pnictide superconductors: An anisotropic \pm s-wave scenario
• Suppression of Magnetic Order by Pressure in BaFe2As2
• Two superconducting gaps in LaFeAsO0.92F0.08 revealed by 75As nuclear quadrupole resonance
• Cobalt-substitution-induced Superconductivity in a New Compound with ZrCuSiAs-type Structure, SrFeAsF
• Magnetic order in CaFe1-xCoxAsF (x = 0, 0.06, 0.12) superconductor compounds
• Caloric Determination of the Upper Critical Fields and Anisotropy of NdFeAsO1-xFx Single Crystals
• Fermi Surface and Band Renormalization in (Sr,K)Fe${}_2$As${}_2$ Superconductor from Angle-Resolved Photoemission Spectroscopy
• Ferromagnetic spin fluctuation in LaFeAsO1-xFx
• Low-temperature lattice anomaly in LaFeAsO0.93F0.07 probed by x-ray absorption spectroscopy: Evidence for strong electron-lattice interaction
• Full Gap Superconductivity in Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ Probed by Muon Spin Rotation
• Microscopic study of the effect of impurities on the first order spin density wave transition in BaFe${}_2$As${}_2$
• Coexistence of Supercondcutivity and Magnetism in LaFeAs(O0.94F0.06) Probed by Muon Spin Relaxation
• 75As NMR study of the ternary iron arsenide BaFe2As2
• Two-dimensional magnetism in the pnictide superconductor parent material SrFeAsF probed by muon-spin relaxation

Cited by in corpus (131)

• High-temperature superconductivity in iron-based materials
• Electrodynamics of Correlated Electron Materials
• Iron-Based Superconductors: current status of materials and pairing mechanism
• A review of Fe-chalcogenide superconductors: the simplest Fe-based superconductor
• Iron based superconductors: magnetism, superconductivity and electronic structure
• The Physics and Applications of Superconducting Metamaterials
• d-wave pairing from spin fluctuations in the KxFe{2-y}Se2 superconductors
• Low-energy microscopic models for iron-based superconductors: a review
• Pseudogap from ARPES experiment: three gaps in cuprates and topological superconductivity
• Transport properties of the new Fe-based superconductor KxFe2Se2 (Tc = 33 K)
• Electronic Structure Calculation by First Principles for Strongly Correlated Electron Systems
• Electronic Structure and Superconductivity of FeSe-Related Superconductors
• Superconductivity in the Honeycomb-Lattice Pnictide SrPtAs
• Dichotomy between large local and small ordered magnetic moment in Iron-based superconductors
• On the multi-orbital band structure and itinerant magnetism of iron-based superconductors
• Symmetry of spin excitation spectra in the tetragonal paramagnetic and superconducting phases of 122-ferropnictides
• Single Crystal Growth and Characterization of the Iron-Based Superconductor KFe2As2 Synthesized by KAs Flux Method
• Electrodynamics of electron doped iron-pnictide superconductors: Normal state properties
• Coexistence of Superconductivity and Charge Density Wave in SrPt2As2
• Ambient Pressure Structural Quantum Critical Point in the Phase Diagram of (Ca${}_x$Sr${}_{1-x}$)${}_3$Rh${}_4$Sn${}_{13}$
• Physics and chemistry review of layered chalcogenide superconductors
• Structure, magnetic order and excitations in the 245 family of Fe-based superconductors
• Evidence of local structural inhomogeneity in FeSe(1-x)Te(x) from extended x-ray absorption fine structure
• Possible three dimensional nodes in the $s\pm$ superconducting gap of BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Optical properties of the iron-arsenic superconductor BaFe1.85Co0.15As2
• Distinguishing spin-orbit coupling and nematic order in the electronic spectrum of iron-based superconductors
• A doping dependent specific heat study of the superconducting gap in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• A study of electronic structure of FeSe${}_{1-x}$Te${}_x$ chalcogenides by Fe and Se K-edge x-ray absorption near edge structure measurements
• Suppression of superconductivity by Neel-type magnetic fluctuations in the iron pnictides
• Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2As2
• Observation of antiferromagnetic order as odd-parity multipoles inside the superconducting phase in CeRh${}_2$As${}_2$
• Electron-phonon coupling and charge gap in spin-density-wave iron-pnictides from quasiparticle relaxation dynamics
• Superconductivity and its mechanism in an ab initio model for electron-doped LaFeAsO
• Magnetic fluctuations and superconducting properties of CaKFe4As4 studied by 75As NMR
• Superconductivity in Ce- and U-based "122" heavy-fermion compounds
• Nd induced Mn spin-reorientation transition in NdMnAsO
• Antiferromagnetism in EuCu2As2 and EuCu1.82Sb2 Single Crystals
• Maximizing Fermi surface multiplicity optimizes superconductivity in iron pnictides
• Superconducting Transition Temperatures of up to 47 K from Simultaneous Rare-Earth Element and Antimony Doping of 112-Type CaFeAs2
• Electronic Structure, Topological Phase Transitions and Superconductivity in (K,Cs)xFe2Se2
• Josephson effect between a two-band superconductor with the s++ or s+- pairing symmetry and a conventional s-wave superconductor
• Anisotropic Phase Diagram and Superconducting Fluctuations in SmFeAsO0.85F0.15
• S wave superconductivity in newly discovered superconductor BaTi${}_2$Sb${}_2$O revealed by ${}^{121/123}$Sb-NMR/Nuclear Quadrupole Resonance measurements
• Magnetic order without tetragonal-symmetry-breaking in iron arsenides: microscopic mechanism and spin-wave spectrum
• Anion height dependence of Tc and density of states in iron based superconductors
• Ground state, collective mode, phase soliton and vortex in multiband superconductors
• Single Impurity Problem in Iron-Pnictide Superconductors
• Collective modes in multiband superfluids and superconductors: Multiple dynamical classes
• Itinerant Nature of Magnetism in Iron Pnictides: A first principles study
• Magnetic excitations of Fe_{1+y}Se_xTe_{1-x} in magnetic and superconductive phases
• Crossover from commensurate to incommensurate antiferromagnetism in stoichiometric NaFeAs revealed by single-crystal 23Na,75As-NMR experiments
• Bulk superconductivity in Bi4O4S3 revealed by specific heat measurement
• Two-dimensional XY-type Magnetic Properties of Locally Noncentrosymmetric Superconductor CeRh${}_2$As${}_2$
• Neutron-scattering measurements of the spin excitations in LaFeAsO and Ba(Fe${}_{0.953}$Co${}_{0.047}$)${}_2$As${}_2$: Evidence for a sharp enhancement of spin fluctuations by nematic order
• Magnetic order in orbital models of the iron pnictides
• Analysis of spin density wave conductivity spectra of iron pnictides in the framework of density functional theory
• The magnetic moment enigma in Fe-based high temperature superconductors
• Crystallography and Physical Properties of BaCo2As2, Ba{0.94}K{0.06}Co2As2 and Ba{0.78}K{0.22}Co2As2
• FeTe${}_{0.55}$Se${}_{0.45}$: a multiband superconductor in the clean and dirty limit
• Iron-platinum-arsenide superconductors Ca10(PtnAs8)(Fe2-xPtxAs2)5
• Pseudogap Behavior of the Nuclear Spin-lattice Relaxation Rate in FeSe Probed by ${}^{77}$Se-NMR
• Evidence of a universal and isotropic 2Δ/kBTC ratio in 122-type iron pnictide superconductors over a wide doping range
• Eliashberg Analysis of Optical Spectra Reveals Strong Coupling of Charge Carriers to Spin Fluctuations in Superconducting Iron Pnictides
• Nodes vs. minima in the energy gap of iron-pnictides from field-induced anisotropy
• The anomaly Cu doping effects on LiFeAs superconductors
• Unconventional magnetism in the spin-orbit driven Mott insulators Ba3MIr2O9 (M=Sc,Y)
• Theory of High-Tc Superconductivity: Accurate Predictions of Tc
• Evolution of the multiband RKKY interaction: Application to iron pnictides and chalcogenides
• Calorimetric Evidence for Nodes in the Overdoped Ba(Fe${}_{0.9}$Co${}_{0.1}$)${}_2$As${}_2$
• Crystal Symmetry and Magnetic Order in Iron Pnictides: a Tight Binding Wannier Function Analysis
• Magnetotransport studies of EuFe${}_2$As${}_2$: the influence of the Eu${}^{2+}$ magnetic moments
• Superconductivity in 122-type antimonide BaPt${}_2$Sb${}_2$
• GPU-based acceleration of free energy calculations in solid state physics
• Magnetic penetration-depth measurements of a suppressed superfluid density of superconducting Ca${}_{0.5}$Na${}_{0.5}$Fe${}_2$As${}_2$ single crystals by proton irradiation
• RE L${}_3$ X-ray absorption study of REO${}_{1-x}$F${}_x$FeAs (RE=La, Pr, Nd, Sm) oxypnictides
• Anisotropic Superconducting Properties of Optimally Doped BaFe${}_2$(As${}_{0.65}$P${}_{0.35}$)${}_2$ under Pressure
• Strongly correlated superconductivity with long-range spatial fluctuations
• Electronic structure of iron-based superconductors: from pnictides to chalcogenides and other similar systems
• Novel multiple-band superconductor SrPt2As2
• Superconductivity in PbO-type Fe chalcogenides
• Suppression of superconductivity in layered Bi4O4S3 by Ag doping
• Bulk superconductivity in single phase Bi3O2S3
• Magnetic and superconducting properties on S-type single-crystal CeCu${}_2$Si${}_2$ probed by ${}^{63}$Cu nuclear magnetic resonance and nuclear quadrupole resonance
• Superconducting properties of novel BiSe${}_2$-based layered LaO${}_{1-x}$F${}_x$BiSe${}_2$ single crystals
• Possible unconventional superconductivity in substituted BaFe${}_2$As${}_2$ revealed by magnetic pair-breaking studies
• Temperature dependent local structure of NdFeAsO1-xFx system using arsenic K-edge extended x-ray absorption fine structure
• Electronic phase diagram of NdFe1-xRhxAsO
• Synthesis, structural and physical properties of ${\delta }^{\prime }$-FeSe${}_{1-x}$
• Superconductivity in titanium-based pnictide oxide compounds
• Single crystal growth and structural characterization of FeTe1-xSx
• Optical properties of the iron-chalcogenide superconductor FeTe0.55Se0.45
• Theory of macroscopic quantum tunneling with Josephson-Leggett collective excitations in multi-band superconducting Josephson junctions
• Comprehensive study of out-of-plane transport properties in BaFe${}_2$As${}_2$: Three-dimensional electronic state and effect of chemical substitution
• Type-1.5 superconductivity in muliband and other multicomponent systems
• LDA'+DMFT Investigation of Electronic Structure of K{1-x}Fe{2-y}Se2 Superconductor
• Strong-Coupling Superconductivity in BaPd2As2 Induced by Soft Phonons in the ThCr2Si2-type Polymorph
• Peak in the superconducting transition temperature of the nonmagnetic topological line-nodal material CaSb${}_2$ under pressure
• Thermodynamic electric quadrupole moments of nematic phases from first-principles calculation
• Effect of annealing on the specific heat of optimally doped Ba(Fe${}_{0.92}$Co${}_{0.08}$)${}_2$As${}_2$
• Magnetic neutron scattering studies on the Fe-based superconductor system Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Antiferromagnetic Order and Superconductivity in Sr4(Mg0.5-xTi0.5+x)2O6Fe2As2 with Electron Doping: 75As-NMR Study
• Magnetic surface reconstruction in the van-der-Waals antiferromagnet Fe${}_{1+x}$Te
• Static and Dynamical Susceptibility of LaO1-xFxFeAs
• Genuine Electronic Structure and Superconducting Gap Structure in (Ba${}_{0.6}$K${}_{0.4}$)Fe${}_2$As${}_2$ Superconductor
• Breakdown of Chemical Scaling for Pt-Doped CaFe2As2
• Anomalous Pressure Dependence of the Superconducting Transition Temperature in TlNi${}_2$Se${}_{2-x}$S${}_x$
• Theoretical study on the correlation between the spin fluctuation and $T_c$ in the isovalent-doped 1111 iron-based superconductors
• Local nodal Cooper pairs in multiorbital systems
• Structural and magnetic properties of Fe1+dTe single crystals
• Interplay between charge density wave and superconductivity in multi-band systems with inter-band Coulomb interaction
• High-field irreversible moment reorientation in the antiferromagnet Fe${}_{1.1}$Te
• Three-dimensional anisotropic fluctuation diamagnetism around the superconducting transition of Ba(1-x)KxFe2As2 single crystals in the finite-field (or Prange) regime
• Nematic and time-reversal breaking superconductivities coexisting with quadrupole order in a ${\Gamma }_3$ system
• The magnetoresistance and Hall effect in CeFeAsO: a high magnetic field study
• 31P NMR Investigation of the Superconductor LiFeP (Tc = 5 K)
• Persistent Magnetism in Silver-doped BaFe2As2 Crystals
• Suppression of superconductivity and structural phase transition against pressure in Ca${}_{10}$(Ir${}_4$As${}_8$)(Fe${}_{2-x}$Ir${}_x$As${}_2$)${}_5$
• Representation-protected topology of spin-singlet $s$-wave superconductors
• Enhancement of the critical current by surface irregularities in Fe-based superconductors
• Pressure induced antiferromagnetic-tetragonal to nonmagnetic-collapse-tetragonal insulator-metal transition in ThMnAsN
• Weak-Coupling Theory for Multiband Superconductivity Induced by Jahn-Teller Phonons
• Introduction to High-Temperature Superconductivity for Solid State Chemists
• Hidden Fermi surface in K${}_x$Fe${}_{2-y}$Se${}_2$: LDA+DMFT study
• Two-dimensional macroscopic quantum tunneling in multi-gap superconductor Josephson junctions
• Acoustic lattice instabilities at the magneto-structural transition in Fe${}_{1.057(7)}$Te
• Quantum-critical transport in marginal Fermi liquids
• The role of magnetic excitations in magnetoresistance and Hall effect of slightly TM-substituted BaFe${}_2$As${}_2$ compounds (TM = Mn, Cu, Ni)
• Single crystal growth of BaFe${}_{2-x}$Co${}_x$As${}_2$ without fluxing agent
• Quantum-critical resistivity of strange metals in a magnetic field
• Antiferromagnetic structure and magnetic properties of Dy2O2Te: An isostructural analog of the rare-earth superconductors R2O2Bi
• Three-dimensional spin susceptibility in Ba${}_{0.75}$K${}_{0.25}$Fe${}_2$As${}_2$: Out-of-plane modulation revealed by neutron spectroscopy and theoretical modeling