Quantum criticality in the iron pnictides and chalcogenides

Abstract

Superconductivity in the iron pnictides and chalcogenides arises at the border of antiferromagnetism, which raises the question of the role of quantum criticality. In this topical review, we describe the theoretical work that led to the prediction for a magnetic quantum critical point arising out of a competition between electronic localization and itinerancy, and the proposal for accessing it by using isoelectronic P substitution for As in the undoped iron pnictides. We go on to compile the emerging experimental evidence in support of the existence of such a quantum critical point in isoelectronically-tuned iron pnictides. We close by discussing the implications of these results for the physics of the iron pnictides and chalcogenides.

20 pages, 9 figures

References in corpus (29)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• High-temperature superconductivity in iron-based materials
• "Deconfined" quantum critical points
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress Report
• Strong Correlations and Magnetic Frustration in the High Tc Iron Pnictides
• Theory of Electron Nematic Order in LaOFeAs
• Heavy Fermions and Quantum Phase Transitions
• Determination of the phase diagram of the electron doped superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Ising and Spin orders in Iron-based Superconductors
• Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
• Superconductivity up to 30 K in the vicinity of quantum critical point in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Origin of the spin density wave instability in AFe${}_2$As${}_2$ (A=Ba, Sr) as revealed by optical spectroscopy
• Superconductivity induced by phosphorus doping and its coexistence with ferromagnetism in EuFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• Antiferromagnetic transition in EuFe${}_2$As${}_2$: A possible parent compound for superconductors
• Iron pnictides as a new setting for quantum criticality
• Intrinsic Properties of Stoichiometric LaOFeP
• Hole and Electron Contributions to the Transport Properties of Ba(Fe_(1-x)Ru_x)_2As_2 Single Crystals
• CeFePO: A Heavy Fermion Metal with Ferromagnetic Correlations
• Superconductivity in LaFeAs${}_{1-x}$P${}_x$O: effect of chemical pressures and bond covalency
• Different response of the crystal structure to isoelectronic doping in BaFe2[As(1-x)P(x)]2 and [Ba(1-x)Sr(x)]Fe2As2
• Signatures of Electronic Correlations in Optical Properties of LaFeAsO${}_{1-x}$F${}_x$
• Correlation effects in the iron pnictides
• Low-temperature nuclear and magnetic structures of La2O2Se2.Fe2O from X-ray and neutron diffraction measurements
• Evidence of quantum criticality in the phase diagram of K${}_x$Sr${}_{1-x}$Fe${}_2$As${}_2$ from measurements of transport and thermoelectricity
• Rare earth magnetism in CeFeAsO: A single crystal study
• Electronic structure of Ba(Fe,Ru)2As2 and Sr(Fe,Ir)2As2 alloys
• Analysis of spin density wave conductivity spectra of iron pnictides in the framework of density functional theory

Cited by in corpus (62)

• Antiferromagnetic order and spin dynamics in iron-based superconductors
• High Temperature Superconductivity in Iron Pnictides and Chalcogenides
• Quantum critical point lying beneath the superconducting dome in iron-pnictides
• Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
• Ironing out the details of unconventional superconductivity
• Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
• Fe-based superconductors: seven years later
• Fractional power-law behavior and its origin in iron-chalcogenide and ruthenate superconductors: Insights from first-principles calculations
• The origin of nematic order in FeSe
• Quasiparticle mass enhancement close to the quantum critical point in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Nematicity and magnetism in FeSe and other families of Fe-based superconductors
• Coexistence and competition of the short-range incommensurate antiferromagnetic order with superconductivity in BaFe2-xNixAs2
• Evolution of symmetry and structure of the gap in Fe-based superconductors with doping and interactions
• Spin fluctuations in iron pnictides and chalcogenides: From antiferromagnetism to superconductivity
• Critical Quadrupole Fluctuations and Collective Modes in Iron Pnictide Superconductors
• Structural and magnetic phase transitions near optimal superconductivity in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Intermediate Coupling Model of the Cuprates
• The phase diagrams of iron-based superconductors: theory and experiments
• Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors
• A comprehensive scenario of the single crystal growth and doping dependence of resistivity and anisotropic upper critical fields in (Ba${}_{1-x}$K${}_x$)Fe${}_2$As${}_2$ ($0.22\le x\le 1$)
• A Tale of Two Metals: contrasting criticalities in the pnictides and hole-doped cuprates
• Quantum-Critical Fluctuations in 2D Metals: Strange Metals and Superconductivity in Antiferromagnets and in Cuprates
• Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides
• Quantum criticality in AFe2As2 with A = K, Rb, and Cs suppresses superconductivity
• Electronic nematic states tuned by isoelectronic substitution in bulk FeSe1-xSx
• Non-Fermi Liquid due to Orbital Fluctuations in Iron Pnictide Superconductors
• Orbital selectivity in electron correlations and superconducting pairing of iron-based superconductors
• Zero-field Quantum Critical Point in CeCoIn${}_5$
• Using electron irradiation to probe iron - based superconductors
• Effects of Ru Substitution on Dimensionality and Electron Correlations in Ba(Fe_{1-x}Ru_x)_2As_2
• Spin-Driven Nematic Instability of the Multi-Orbital Hubbard Model: Application to Iron-Based Superconductors
• Evolution of the Superconductivity Dome in the two dimensional Hubbard Model
• Nodeless superconductivity in the presence of spin-density wave in pnictide superconductors: The case of BaFe${}_{2-x}$Ni${}_x$As${}_2$
• Magnetism in parent Fe-chalcogenides: quantum fluctuations select a plaquette order
• Are Heavy Fermion Strange Metals Planckian?
• Imaging anomalous nematic order and strain in optimally doped BaFe${}_2$(As,P)${}_2$
• Non-Fermi-liquid scattering rates and anomalous band dispersion in ferropnictides
• Quantum phase transition inside the superconducting dome of Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ probed by optical magneto-sensing using NV-centers in diamond
• Superconductivity and quantum criticality in heavy fermions CeIrSi${}_3$ and CeRhSi${}_3$
• Anisotropic electrical resistivity of LaFeAsO: evidence for electronic nematicity
• Orbital-dependent effects of electron correlations in microscopic models for iron-based superconductors
• Double stage nematic bond-ordering above double stripe magnetism: application to BaTi${}_2$Sb${}_2$O
• On the dual role of the d-electrons in iron-pnictides
• Global phase diagram of a spin-orbital Kondo impurity model and the suppression of Fermi-liquid scale
• Hidden spin liquid in an antiferromagnet: Applications to FeCrAs
• Collective magnetic excitations of $C_4$ symmetric magnetic states in iron-based superconductors
• Iron-based superconductors: tales from the nuclei
• Effective Exchange Interactions for Bad Metals and Implications for Iron-based Superconductors
• Spectral Evidence for Emergent Order in Ba${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$
• Magnetic and Structural Properties of the Iron Oxychalcogenides La${}_2$O${}_2$Fe${}_2$O$M_2$ ($M$= S, Se)
• Increasing stripe-type fluctuations in $A$Fe${}_2$As${}_2$ ($A$ = K, Rb, Cs) superconductors probed by ${}^{75}$As NMR spectroscopy
• Electron Correlation and Spin Dynamics in Iron Pnictides and Chalcogenides
• Magnetic and Ising quantum phase transitions in a model for isoelectronically tuned iron pnictides
• Tuning the magnetic and structural phase transitions of PrFeAsO via Fe/Ru spin dilution
• Local Structure of Mott Insulating Iron Oxychalcogenides La${}_2$O${}_2$Fe${}_2$O$M$${}_2$ ($M$ = S, Se)
• Modelling the electronic structure and magnetic properties of LiFeAs and FeSe using hybrid-exchange density functional theory
• Effects of pressure and magnetic field on the re-entrant superconductor Eu(Fe${}_{0.93}$Rh${}_{0.07}$)${}_2$As${}_2$
• Doping dependence and electron-boson coupling in the ultrafast relaxation of hot electron populations in Ba(Fe_{1-x}Co_x)_2As_2
• Quantum Critical Scaling of Specific Heat in a Quasicrystal
• Emergent Ising degrees of freedom above double-stripe magnetism
• Exact Strongly Coupled Fixed Point in $g{\phi }^4$ Theory
• On non-canonical degrees of freedom