Exploration of new superconductors and functional materials and fabrication of superconducting tapes and wires of iron pnictides

Abstract

This paper reviews the highlights of a 4-years-long research project supported by the Japanese Government to explore new superconducting materials and relevant functional materials. The project found several tens of new superconductors by examining ~1000 materials, each of which was chosen by Japanese team member experts with a background in solid state chemistry. This review summarizes the major achievements of the project in newly found superconducting materials, and the wire and tape fabrication of iron-based superconductors. It is a unique feature of this review to incorporate a list of ~700 unsuccessful materials examined for superconductivity in the project. In addition, described are new functional materials and functionalities discovered during the project.

141 pages, 127 Figures, 14 Tables, 535 Refrences

References in corpus (134)

• 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${}_x$}
• High-temperature superconductivity in iron-based materials
• Superconductivity in single-layer films of FeSe with a transition temperature above 100 K
• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure
• The superconductivity at 18 K in LiFeAs system
• Near-degeneracy of several pairing channels in multiorbital models for the Fe-pnictides
• Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs
• Magnetism, superconductivity, and pairing symmetry in Fe-based superconductors
• Superconductivity and Phase Diagram in the Iron-based Arsenic-oxides ReFeAsO1-delta (Re = rare earth metal) without F-Doping
• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
• 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
• Effects of Co substitution on thermodynamic and transport properties and anisotropic $H_{c2}$ in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ single crystals
• Superconductivity at 25 K in hole doped $(L{a}_{1-x}S{r}_x)OFeAs$
• Nearly Isotropic superconductivity in (Ba,K)Fe2As2
• Funtional Renormalization Group Study of the Pairing Symmetry and Pairing Mechanism of the FeAs Based High Temperature Superconductors
• Fe-based high temperature superconductivity with Tc=31K bordering an insulating antiferromagnet in (Tl,K)FexSe2 Crystals
• Iron-Based Superconductors: current status of materials and pairing mechanism
• Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1-xCox)2As2
• Upper critical fields and thermally-activated transport of Nd(O_0.7F_0.3)FeAs single crystal
• Superconductivity at 32 K in single crystal Rb${}_{0.78}$Fe${}_2$Se${}_{1.78}$}
• Superconductivity in Co-doped LaFeAsO
• Superconductivity up to 30 K in the vicinity of quantum critical point in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation
• Superconductivity induced by Ni doping in BaFe${}_2$As${}_2$
• Advantageous grain boundaries in iron pnictide superconductors
• Nodal Spin Density Wave and band topology of the FeAs based materials
• A Review of the Properties of Nb3Sn and Their Variation with A15 Composition, Morphology and Strain State
• Crystallographic Phase Transition and High-Tc Superconductivity in LaFeAsO:F
• Superconductivity in SrFe_(2-x)Co_xAs_2: Internal Doping of the Iron Arsenide Layers
• Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer
• High intergrain critical current density in fine-grain (Ba0.6K0.4)Fe2As2 wires and bulks
• Structure, antiferromagnetism and superconductivity of the layered iron arsenide NaFeAs
• Self-Consistent Vertex Correction Analysis for Iron-Based Superconductors: Mechanism of Coulomb-Interaction-Driven Orbital Fluctuations
• Superconductivity induced by cobalt doping in iron-based oxyarsenides
• Effect of Co doping on superconductivity and transport properties in SmFe${}_{1-x}$Co${}_x$AsO
• The Flavor Structure of the Excited Baryon Spectra from Lattice QCD
• Determination of anisotropic Hc2 up to 60 T in (Ba0.55K0.45)Fe2As2 single crystals
• Anisotropy of the Optimally-Doped Iron Pnictide Superconductor Ba(Fe0.926Co0.074)2As2
• Superconducting Phases in Potassium-Intercalated Iron Selenides
• Transport and anisotropy in single-crystalline SrFe${}_2$As${}_2$ and $A_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ ($A$ = Sr, Ba) superconductors
• Superconductivity Induced by Bond Breaking in the Triangular Lattice of IrTe2
• Itinerant Ferromagnetism in layered crystals LaCoOX (X = P, As)
• High magnetic field scales and critical currents in SmFeAs(O,F) crystals: promising for applications
• First Order Phase Transition and Superconductivity in BaNi2As2 Single Crystals
• (Sr_3Sc_2O_5)Fe_2As_2 as a possible parent compound for FeAs-based superconductors
• Bipartite magnetic parent phases in the iron-oxypnictide superconductor
• Nickel-based phosphide superconductor with infinite-layer structure, BaNi2P2
• Superconductivity in SrNi2As2 Single Crystals
• Hydrogen in layered iron arsenide: indirect electron doping to induce superconductivity
• Crystal structure and phase transitions across the metal-superconductor boundary in the SmFeAsO1-xFx (0 < x < 0.20) family
• Fabrication of the iron-based superconducting wire using Fe(Se, Te)
• Biaxially textured cobalt-doped BaFe2As2 films with high critical current density over 1 MA/cm2 on MgO-buffered metal-tape flexible substrates
• Structure and Anisotropic Properties of BaFe2-xNixAs2 (x = 0, 1, 2) Single Crystals
• Strong Tc dependence for strained, epitaxial Ba(Fe1-xCox)2As2 thin films
• Nickel-based layered superconductor, LaNiOAs
• Ba1-xNaxTi2Sb2O (0.0 <= x <= 0.33): A Layered Titanium-based Pnictide Oxide Superconductor
• Superconductivity in Epitaxial Thin Films of Co-Doped SrFe2As2 with Bilayered FeAs Structures and their Magnetic Anisotropy
• Superconducting and ferromagnetic phases induced by lattice distortions in SrFe2As2
• Extremely high sensitivity to uniaxial stress in pressure induced superconductivity of BaFe2As2
• High-T_c superconductivity induced by doping rare earth elements into CaFeAsF
• Coexistence of Superconductivity and Charge Density Wave in SrPt2As2
• Density functional study of BaNi${}_2$As${}_2$: Electronic structure, phonons and electron-phonon superconductivity
• High Critical Current Density 4 MA/cm2 in Co-Doped BaFe2As2 Epitaxial Films Grown on (La, Sr)(Al, Ta)O3 Substrates without Buffer Layers
• Superconducting properties of SmO1-xFxFeAs wires with Tc = 52 K prepared by the powder-in-tube method
• Superconductivity and phase instability of NH3-free Na-intercalated FeSe1-zSz
• Superconductivity and the Effects of Pressure and Structure in Single Crystalline SrNi${}_2$P${}_2$
• Narrow superconducting window in Ni-doped LaFeAsO
• First Homologous Series of Iron Pnictide Oxide Superconductors (Fe2As2)(Can+1(Sc,Ti)nOy) [n = 3,4,5] with Extremely Thick Blocking Layers
• Electronic Structure and Electron Correlation in LaFeAsO_{1-x}F_x and LaFePO_{1-x}F_x
• Extracting Nucleon Magnetic Moments and Electric Polarizabilities from Lattice QCD in Background Electric Fields
• Scaling behaviour of the critical current in clean epitaxial Ba(Fe1-xCox)2As2 thin films
• Transport properties and superconductivity in $B{a}_{1-x}{M}_{x}F{e}_{2}A{s}_2$ (M=La and K) with double FeAs layers
• New iron-based arsenide oxides (Fe2As2)(Sr4M2O6)(M = Sc, Cr)
• Specific Heat of the Ca-Intercalated Graphite Superconductor CaC${}_6$
• Superconductivity at 44 K in K intercalated FeSe system with excess Fe
• Giant Phonon Softening and Enhancement of Superconductivity by Phosphorus Doping of BaNi2As2
• Superconductivity induced by ruthenium substitution in an iron arsenide: investigation of SrFe2-xRuxAs2 (0 <= x <= 2)
• Atomically-flat, chemically-stable, superconducting epitaxial thin film of iron-based superconductor, cobalt-doped BaFe${}_2$As${}_2$
• Evolution of bulk superconductivity in SrFe2As2 with Ni substitution
• Non-perturbative improvement of stout-smeared three flavour clover fermions
• Large decrease in the critical temperature of superconducting LaFeAsO0.85 compounds doped with 3% atomic weight of nonmagnetic Zn impurities
• Superconductivity at 23 K and Low Anisotropy in Rb-Substituted BaFe_2As_2 Single Crystals
• Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs
• Flux tubes in the SU(3) vacuum: London penetration depth and coherence length
• Caloric Determination of the Upper Critical Fields and Anisotropy of NdFeAsO1-xFx Single Crystals
• Two-loop renormalization of vector, axial-vector and tensor fermion bilinears on the lattice
• Th substituted SmFeAsO: structural details and superconductivity with Tc above 50 K
• Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2As2
• Electronic structure, disconnected Fermi surfaces and antiferromagnetism in the layered pnictide superconductor Na${}_x$Ba${}_{1-x}$Ti${}_2$Sb${}_2$O
• Superconductivity and its mechanism in an ab initio model for electron-doped LaFeAsO
• Combined microstructural and magneto optical study of current flow in polycrystalline forms of Nd and Sm Fe-oxypnictides
• DC superconducting quantum interference devices fabricated using bicrystal grain boundary junctions in Co-doped BaFe2As2 epitaxial films
• High transport Jc in magnetic fields up to 28 T of stainless steel/Ag double sheathed Ba122 tapes fabricated by scalable rolling process
• Influenced of Fe buffer thickness on the crystalline quality and the transport properties of Fe/Ba(Fe1-xCox)2As2 bilayers
• Superconductivity in Room Temperature Stable electride and high-pressure phases of alkali metals
• Superconducting Transition Temperatures of up to 47 K from Simultaneous Rare-Earth Element and Antimony Doping of 112-Type CaFeAs2
• 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
• Superconductivity in SnO: a Nonmagnetic Analog to Fe-based Superconductors?
• Synthesis and physical properties of Ca1-xRExFeAs2 with RE = La ~ Gd
• Superconductivity, charge- or spin-density wave, and metal-nonmetal transition in BaTi${}_2$(Sb${}_{1-x}$Bi${}_x$)${}_2$O
• Thin film growth by pulsed laser deposition and properties of 122-type iron-based superconductor AE(Fe1--xCox)2As2 (AE = alkaline earth)
• Evolution of the bulk properties, structure, magnetic order, and superconductivity with Ni doping in CaFe2-xNixAs2
• Unconventional Superconductivity in electron-doped layered metal nitride halides $M$N$X$ ($M$ = Ti, Zr, Hf; $X$ = Cl, Br, I)
• The role of different negatively charged layers in Ca10(Fe1-xPtxAs)10(Pt3+yAs8) and superconductivity at 30 K in electron-doped (Ca0.8La0.2)10(FeAs)10(Pt3As8)
• Structural and critical current properties in polycrystalline SmO1-xFxFeAs
• Superconductivity in Noncentrosymmetric Iridium Silicide Li2IrSi3
• Electron-phonon superconductivity and charge density wave instability in the layered titanium-based pnictide BaTi${}_2$Sb${}_2$O
• Evidence for Supercurrent Connectivity in Conglomerate Particles in NdFeAsO1-d
• Electric double-layer transistor using layered iron selenide Mott insulator TlFe1.6Se2
• The superconductor KxSr(1-x)Fe2As2: Normal state and superconducting properties
• Intra-unit-cell nematic charge order in the titanium-oxypnictide family of superconductors
• Iron-platinum-arsenide superconductors Ca10(PtnAs8)(Fe2-xPtxAs2)5
• Anisotropic Superconductivity of Ca1-xLaxFeAs2 (x ~ 0.18) Single Crystal
• Enhanced thermoelectric properties by Ir doping of PtSb2 with pyrite structure
• Sr${}_2$(Ba${}_2$)VO${}_4$ under pressure -- an orbital switch and potential $d^1$ superconductor
• Spin and Charge Fluctuations in the $\alpha$-structure Layered Nitride Superconductors
• Superconductivity in 122-type antimonide BaPt${}_2$Sb${}_2$
• A Combined NNLO Lattice-Continuum Determination of $L_{10}^r$
• WDX-Analysis of the New Superconductors RO(1-x)F(x)FeAs and Its Consequences on the Electronic Phase Diagram
• Structural Analysis on Iron-Based Superconductor Pr1111 System with Oxygen Deficiency and Flourine Substitution
• Superconducting Properties and Phase Diagram of Indirectly Electron-Doped (Sr1-xLax)Fe2As2 Epitaxial Films Grown by Pulsed Laser Deposition
• La2Sb, a layered superconductor with metal-metal bonds
• Breakdown of Chemical Scaling for Pt-Doped CaFe2As2
• Synchrotron X-ray Diffraction Study of Structural Phase Transition in Ca10(Ir4As8)(Fe2-xIrxAs2)
• Coexistence of Bloch electrons and glassy electrons in Ca10(Ir4As8)(Fe2_xIrxAs2)5 revealed by angle-resolved photoemission spectroscopy
• Layered Compounds BaM2Ge4Ch6 (M = Rh, Ir and Ch = S, Se) with Pyrite-Type Building Blocks and Ge-Ch Heteromolecule-Like Anions
• Superconductivity of Ca2InN with a layered structure embedding an anionic indium chain array
• Two superconducting phases and their characteristics in layered BaTi2(Sb1-xBix)2O with x=0.16

Cited by in corpus (18)

• Unconventional Superconductivity
• Doping-dependent critical current properties in K, Co, and P-doped BaFe2As2 single crystals
• Superconducting Properties of the $s^{\pm }$-wave state: Fe-based superconductors
• Fe-based superconducting thin films on metallic substrates: growth, characteristics and relevant properties
• Electrochemical synthesis and crystal structure of the organic ion intercalated superconductor (TMA)0.5Fe2Se2 with Tc = 43 K
• High-field transport properties of a P-doped BaFe2As2 film on technical substrate
• Superconducting (Li, Fe)OHFeSe film of high quality and high critical parameters
• Enhancement of critical current density in (Ba,Na)Fe2As2 round wires using high-pressure sintering
• Possible high-$T_c$ superconductivity due to incipient narrow bands originating from hidden ladders in Ruddlesden-Popper compounds
• Anisotropy of iron-platinum-arsenide Ca10(PtnAs8)(Fe2-xPtxAs2)5 single crystals
• High pressure growth and electron transport properties of superconducting SmFeAsO1-xHx single crystals
• BaFe2(As1-xPx)2 (x = 0.22-0.42) thin films grown on practical metal-tape substrates and their critical current densities
• (CaO)(FeSe): A Layered Wide Gap Oxychalcogenide Semiconductor
• Strong-Coupling Superconductivity in BaPd2As2 Induced by Soft Phonons in the ThCr2Si2-type Polymorph
• Site-Selective Antimony Doping in Arsenic Zigzag Chains of 112-type Ca1-xLaxFeAs2
• Fluctuation magnetoconductivity in pristine and protonirradiated Ca8.5La1.5(Pt3As8)(Fe2As2)5 single crystals
• Stabilization and heteroepitaxial growth of metastable tetragonal FeS thin films by pulsed laser deposition
• Monte Carlo Simulation of the Crossover from Bose Glass to Bragg Glass Phase in Layered BSCCO with Columnar Defects