Iron based superconductors: magnetism, superconductivity and electronic structure

Abstract

Angle resolved photoemission spectroscopy (ARPES) reveals the features of the electronic structure of quasi-two-dimensional crystals, which are crucial for the formation of spin and charge ordering and determine the mechanisms of electron-electron interaction, including the superconducting pairing. The newly discovered iron based superconductors (FeSC) promise interesting physics that stems, on one hand, from a coexistence of superconductivity and magnetism and, on the other hand, from complex multi-band electronic structure. In this review I want to give a simple introduction to the FeSC physics, and to advocate an opinion that all the complexity of FeSC properties is encapsulated in their electronic structure. For many compounds, this structure was determined in numerous ARPES experiments and agrees reasonably well with the results of band structure calculations. Nevertheless, the existing small differences may help to understand the mechanisms of the magnetic ordering and superconducting pairing in FeSC.

Invited Review

References in corpus (57)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• High-temperature superconductivity in iron-based materials
• 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
• Near-degeneracy of several pairing channels in multiorbital models for the Fe-pnictides
• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• LiFeAs: An Intrinsic FeAs-based Superconductor with Tc = 18K
• To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress Report
• Competing Orders and Spin-Density-Wave Instability in La(O${}_{1-x}$F${}_x$)FeAs
• 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
• First-order magnetic and structural phase transitions in Fe${}_{1+y}$Se${}_x$Te${}_{1-x}$
• Origin of the ~150 K Anomaly in LaOFeAs; Competing Antiferromagnetic Superexchange Interactions, Frustration, and Structural Phase Transition
• Bulk Superconductivity at 14 K in Single Crystals of Fe1+yTexSe1-x
• Heavily electron-doped electronic structure and isotropic superconducting gap in AxFe2Se2 (A=K,Cs)
• The electronic phase diagram of the LaO1-xFxFeAs superconductor
• Two Gaps Make a High Temperature Superconductor?
• Why Does Undoped FeSe Become A High Tc Superconductor Under Pressure?
• Superconductivity up to 30 K in the vicinity of quantum critical point in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Theory of magnetic excitations in iron-based layered superconductors
• Magnetism in Fe-based superconductors
• Superconductivity induced by phosphorus doping and its coexistence with ferromagnetism in EuFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• Strength of the Spin-Fluctuation-Mediated Pairing Interaction in a High-Temperature Superconductor
• Two-dimensional resonant magnetic excitation in BaFe1.84Co0.16As2
• High - Temperature Superconductivity in Iron Based Layered Compounds
• Pseudogap and charge density waves in two dimensions
• Electronic phase separation in the slightly underdoped iron pnictide superconductor Ba(1-x)K(x)Fe(2)As(2)
• Spin-triplet p-wave pairing in a 3-orbital model for iron pnictide superconductors
• Momentum dependence of the superconducting gap in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Two energy scales in the spin excitations of the high-T_c superconductor La${}_{2-x}$Sr${}_x$CuO${}_4$
• Fermi surface topology and low-lying quasiparticle dynamics of parent Fe${}_{1+x}$Te/Se Superconductor by orbital-polarization resolved ARPES
• (pi,pi)-electronic order in iron arsenide superconductors
• Neutron scattering as a probe of the Fe-pnicitide superconducting gap
• Unified Picture for Magnetic Correlations in Iron-Based Superconductors
• Different resistivity response to spin density wave and superconductivity at 20 K in $C{a}_{1-x}N{a}_{x}F{e}_{2}A{s}_2$
• Pressure-induced superconductivity in single crystal CaFe2As2
• Superconductivity and spin-density-waves in multi-band metals
• High magnetic field scales and critical currents in SmFeAs(O,F) crystals: promising for applications
• Resonant and crossover phenomena in a multiband superconductor tuning the chemical potential near a band edge
• Importance of Fermi surface topology for high temperature superconductivity in electron-doped iron arsenic superconductors
• Momentum-resolved superconducting gap in the bulk of Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ from combined ARPES and $\mu$SR measurements
• On the multi-orbital band structure and itinerant magnetism of iron-based superconductors
• Electronic Structure of the BaFe${}_2$As${}_2$ Family of Iron Pnictides
• Transport properties and anisotropy of Rb0.8Fe2Se2 single crystals
• Superconducting Gap and Pseudogap in Iron-Based Layered Superconductor La(O${}_{1-x}$F${}_x$)FeAs
• Homogeneous vs. inhomogeneous coexistence of magnetic order and superconductivity probed by NMR in Co and K doped iron pnictides
• Growth and Superconductivity of FeSex Crystals
• Three- to Two-Dimensional Transition of the Electronic Structure in CaFe2As2 - parent compound for an iron arsenic high temperature superconductor
• Observation of an Orbital Selective Electron-Mode Coupling in Fe-Based High-$T_c$ Superconductors
• Time of life as it is in LiFeAs
• Existence, character and origin of surface-related bands in the high temperature iron pnictide superconductor BaFe_{2-x}Co_{x}As_{2}
• Non-monotonic pseudo-gap in high-Tc cuprates
• An ARPES view on the high-Tc problem: phonons vs spin-fluctuations
• Relation between the one-particle spectral function and dynamic spin susceptibility in superconducting Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8-\delta }$
• Fermi surface of Ba{1-x}KxFe2As2 as probed by angle-resolved photoemission
• Pseudogap-less high T${}_c$ superconductivity in BaCo${}_x$Fe${}_{2-x}$As${}_2$

Cited by in corpus (5)

• Introduction to Holographic Superconductor Models
• Electronic band structure and momentum dependence of the superconducting gap in (Ca, Na)Fe2As2 from angle-resolved photoemission spectroscopy
• Lower critical field and SNS-Andreev spectroscopy of 122-arsenides: Evidence of nodeless superconducting gap
• Vertical loop nodes in iron-based superconductors
• LDA'+DMFT Investigation of Electronic Structure of K{1-x}Fe{2-y}Se2 Superconductor