Iron-Based Superconductors: current status of materials and pairing mechanism

Abstract

Since the discovery of high Tc iron-based superconductors in early 2008, more than 15,000 papers have been published as a result of intensive research. This paper describes the current status of iron-based superconductors (IBSC) covering most up-to-date research progress along with the some background research, focusing on materials (bulk and thin film) and pairing mechanism.

23 Figs. 8 Tables, 222 refs, 82 pages, in press, Physica C (2015)

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• Funtional Renormalization Group Study of the Pairing Symmetry and Pairing Mechanism of the FeAs Based High Temperature Superconductors
• Heavily electron-doped electronic structure and isotropic superconducting gap in AxFe2Se2 (A=K,Cs)
• Nematic and meta-nematic transitions in the iron pnictides
• Why Does Undoped FeSe Become A High Tc Superconductor Under Pressure?
• Pairing Symmetry in a Two-Orbital Exchange Coupling Model of Oxypnictides
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• Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
• A review of Fe-chalcogenide superconductors: the simplest Fe-based superconductor
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• Theory of magnetic excitations in iron-based layered superconductors
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• Iron based high transition temperature superconductors
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• Orbital Order and Spontaneous Orthorhombicity in Iron Pnictides
• Spin fluctuations and superconductivity in a 3D tight-binding model for BaFe2As2
• Self-Consistent Vertex Correction Analysis for Iron-Based Superconductors: Mechanism of Coulomb-Interaction-Driven Orbital Fluctuations
• Evidence for nodal superconductivity in LaFePO
• Spin-triplet p-wave pairing in a 3-orbital model for iron pnictide superconductors
• Superconducting gap symmetry of Ba0.6K0.4Fe2As2 studied by angle-resolved photoemission spectroscopy
• 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
• d-wave pairing from spin fluctuations in the KxFe{2-y}Se2 superconductors
• Neutron scattering as a probe of the Fe-pnicitide superconducting gap
• Unified Picture for Magnetic Correlations in Iron-Based Superconductors
• Two-Orbital Model Explains the Higher Transition Temperature of the Single-Layer Hg-Cuprate Superconductor Compared to That of the La-Cuprate Superconductor
• Anisotropic Energy Gaps of Iron-based Superconductivity from Intra-band Quasiparticle Interference in LiFeAs
• Field and Temperature Dependence of the Superfluid Density in LaO_{1-x}F_xFeAs Superconductors: A Muon Spin Relaxation Study
• Where Are the Extra d Electrons in Transition-Metal Substituted Fe Pnictides?
• Itinerant Ferromagnetism in layered crystals LaCoOX (X = P, As)
• Momentum dependence and nodes of the superconducting gap in iron-pnictides
• Ab initio Derivation of Low-energy Model for Iron-Based Superconductors LaFeAsO and LaFePO
• Inter-pocket pairing and gap symmetry in Fe-based superconductors with only electron pockets
• Superconductivity coexisting with phase-separated static magnetic order in (Ba,K)Fe${}_2$As${}_2$, (Sr,Na)Fe${}_2$As${}_2$ and CaFe${}_2$As${}_2$
• Bipartite magnetic parent phases in the iron-oxypnictide superconductor
• On the multi-orbital band structure and itinerant magnetism of iron-based superconductors
• Pseudogap and Superconductivity in Iron-Based Layered Superconductor studied by Fluctuation-Exchange Approximation
• Psuedo-isotropic upper critical field in cobalt-doped SrFe2As2 epitaxial films
• Superconductivity in Epitaxial Thin Films of Co-Doped SrFe2As2 with Bilayered FeAs Structures and their Magnetic Anisotropy
• Disorder-induced topological change of the superconducting gap structure in iron pnictides
• Superconducting and ferromagnetic phases induced by lattice distortions in SrFe2As2
• Muon spin relaxation studies of magnetic order and superfluid density in antiferromagnetic NdOFeAs, BaFe2As2 and superconducting (Ba,K)Fe2As2
• Superconductivity and phase instability of NH3-free Na-intercalated FeSe1-zSz
• Preparation and superconductivity of iron selenide thin films
• Possible three dimensional nodes in the $s\pm$ superconducting gap of BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Water-induced superconductivity in SrFe2As2
• Nodes in the Gap Function of LaFePO, the Gap Function of the Fe(Se,Te) Systems, and the STM Signature of the s${}_{\pm }$ Pairing
• Emergence of Fully-Gapped $s_{++}$-wave and Nodal d-wave States Mediated by Orbital- and Spin-Fluctuations in Ten-Orbital Model for KFe${}_2$Se${}_2$
• Atomically-flat, chemically-stable, superconducting epitaxial thin film of iron-based superconductor, cobalt-doped BaFe${}_2$As${}_2$
• Unified picture of the doping dependence of superconducting transition temperatures in alkali metal/ammonia intercalated FeSe
• Coherent interfacial bonding on the FeAs tetrahedron in Fe/Ba(Fe(1-x)Co(x))2As2 bilayers
• Magnetism and Superconductivity in the Two-Dimensional 16 Band d-p Model for Iron-Based Superconductors
• Superconductivity and its mechanism in an ab initio model for electron-doped LaFeAsO
• Maximizing Fermi surface multiplicity optimizes superconductivity in iron pnictides
• Single Impurity Problem in Iron-Pnictide Superconductors
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• Superconductivity at 52 K in hydrogen-substituted LaFeAsO1-xHx under high pressure
• Full Gap Superconductivity in Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ Probed by Muon Spin Rotation
• Overview on the physics and materials of the new superconductor KxFe2-ySe2
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• Electronic Structure of Novel Superconductor Ca4Al2O6Fe2As2
• Cooperative effects of Coulomb and electron-phonon interactions in the two-dimensional 16-band d-p model for iron-based superconductors
• A High-Tc Mechanism of Iron Pnictide Superconductivity due to Cooperation of Ferro-orbital and Antiferromagnetic Fluctuations
• Determination of the pairing state in iron-based superconductors through neutron scattering
• Effect of the iron valence in the two types of layers in LiFeO${}_2$Fe${}_2$Se${}_2$

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• Quantitative characterization of short-range orthorhombic fluctuations in FeSe through pair distribution function analysis
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• The ab initio study of unconventional superconductivity in CeCoIn${}_5$ and FeSe
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• Itinerant G-type antiferromagnetic order in SrCr${}_2$As${}_2$
• High pressure growth and electron transport properties of superconducting SmFeAsO1-xHx single crystals
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• Resonant inelastic x-ray scattering study of entangled spin-orbital excitations in superconducting PrFeAsO0.7
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