Competing Orders and Spin-Density-Wave Instability in La(O${}_{1-x}$F${}_x$)FeAs

Abstract

The interplay between different ordered phases, such as superconducting, charge or spin ordered phases, is of central interest in condensed matter physics. The very recent discovery of superconductivity with a remarkable T${}_c$= 26 K in Fe-based oxypnictide La(O${}_{1-x}$F${}_x$)FeAs is a surprise to the scientific community\cite{Kamihara08}. The pure LaOFeAs itself is not superconducting but shows an anomaly near 150 K in both resistivity and dc magnetic susceptibility. Here we provide combined experimental and theoretical evidences showing that the anomaly is caused by the spin-density-wave (SDW) instability, and electron-doping by F suppresses the SDW instability and recovers the superconductivity. Therefore, the La(O${}_{1-x}$F${}_x$)FeAs offers an exciting new system showing competing orders in layered compounds.

4 pages, 4 figures

References in corpus (2)

• Correlated electronic structure of LaOFeAs
• Doping-dependent Phase Diagram of LaO{\it M}As ({\it M}=V--Cu) and Electron-type Superconductivity near Ferromagnetic Instability

Cited by in corpus (141)

• 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
• Spin density wave anomaly at 140 K in the ternary iron arsenide BaFe2As2
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• 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
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• Magnetism, superconductivity, and pairing symmetry in Fe-based superconductors
• To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress Report
• Strong Correlations and Magnetic Frustration in the High Tc Iron Pnictides
• Superconductivity close to magnetic instability in Fe(Se1-xTex)0.82
• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
• Incommensurate magnetic order in the alpha-Fe(Te,Se) superconductor systems
• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• First-order magnetic and structural phase transitions in Fe${}_{1+y}$Se${}_x$Te${}_{1-x}$
• Nearly Isotropic superconductivity in (Ba,K)Fe2As2
• Origin of the ~150 K Anomaly in LaOFeAs; Competing Antiferromagnetic Superexchange Interactions, Frustration, and Structural Phase Transition
• Coherence-incoherence crossover in the normal state of iron-oxypnictides and importance of the Hund's rule coupling
• Funtional Renormalization Group Study of the Pairing Symmetry and Pairing Mechanism of the FeAs Based High Temperature Superconductors
• Electronic Structure and Doping in BaFe${}_2$As${}_2$ and LiFeAs: Density Functional Calculations
• Pairing Symmetry in a Two-Orbital Exchange Coupling Model of Oxypnictides
• The challenge of unravelling magnetic properties in LaFeAsO
• Pressure-induced volume-collapsed tetragonal phase of CaFe2As2 as seen via neutron scattering
• Coexistence of the spin-density-wave and superconductivity in the (Ba,K)Fe2As2
• Superconductivity in Co-doped LaFeAsO
• Superconductivity up to 30 K in the vicinity of quantum critical point in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Bi-collinear antiferromagnetic order in the tetragonal $\alpha$-FeTe
• Phase transitions in LaFeAsO: structural, magnetic, elastic, and transport properties, heat capacity and Mossbauer spectra
• Theory of magnetic excitations in iron-based layered superconductors
• Electron-Hole Symmetry and Magnetic Coupling in Antiferromagnetic LaOFeAs
• Commensurate Spin Density Wave in LaOFeAs: A Local Probe Study
• Origin of the spin density wave instability in AFe${}_2$As${}_2$ (A=Ba, Sr) as revealed by optical spectroscopy
• Nodal Spin Density Wave and band topology of the FeAs based materials
• Superconductivity induced by phosphorus doping and its coexistence with ferromagnetism in EuFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• Anisotropy in the electrical resistivity and susceptibility of superconducting BaFe${}_2$As${}_2$ single crystals
• Antiferromagnetic superexchange interactions in LaOFeAs
• Two-dimensional resonant magnetic excitation in BaFe1.84Co0.16As2
• Spin Gap and Resonance at the Nesting Wavevector in Superconducting FeSe0.4Te0.6
• Spin-triplet p-wave pairing in a 3-orbital model for iron pnictide superconductors
• Bandwidth and Fermi surface of Iron-Oxypnictides: covalency and sensitivity to structural changes
• Spin and Lattice Structure of Single Crystal SrFe2As2
• Antiferromagnetic transition in EuFe${}_2$As${}_2$: A possible parent compound for superconductors
• 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
• Neutron scattering as a probe of the Fe-pnicitide superconducting gap
• Multiple Nodeless Superconducting Gaps in (Ba0.6K0.4)Fe2As2 Superconductor from Angle-Resolved Photoemission Spectroscopy
• Iron pnictides as a new setting for quantum criticality
• Field and Temperature Dependence of the Superfluid Density in LaO_{1-x}F_xFeAs Superconductors: A Muon Spin Relaxation Study
• Different resistivity response to spin density wave and superconductivity at 20 K in $C{a}_{1-x}N{a}_{x}F{e}_{2}A{s}_2$
• Density Functional Study of Excess Fe in Fe${}_{1+x}$Te: Magnetism and Doping
• Low energy spin waves and magnetic interactions in SrFe${}_2$As${}_2$
• 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
• Spin Fluctuations, Interband Coupling, and Unconventional Pairing in Iron-based Superconductors
• Structure and Magnetic Order in the NdFeAs(O,F) Superconductor System
• Unconventional electronic reconstruction in undoped (Ba,Sr)Fe${}_2$As${}_2$ across the spin density wave transition
• Lattice and Magnetic structures of PrFeAsO, PrFeAsO0.85F0.15 and PrFeAsO0.85
• Antiferromagnetically Driven Electronic Correlation in Iron Pnictides and Cuprates
• Electronic Structure of Fe-Based Superconductors
• Magnetic Order of the Iron Spins in NdOFeAs
• Even Parity, Orbital Singlet and Spin Triplet Pairing for Superconducting $La(O_{1-x}{F}_x)FeAs$
• Metamagnetic transition in EuFe${}_2$As${}_2$ single crystals
• High energy spin excitations in BaFe2As2
• Electronic Structure of the BaFe${}_2$As${}_2$ Family of Iron Pnictides
• Crystal structure and phase transitions across the metal-superconductor boundary in the SmFeAsO1-xFx (0 < x < 0.20) family
• Properties of a two orbital model for oxypnictide superconductors: Magnetic order, B_2g spin-singlet pairing channel, and its nodal structure
• Universal linear-temperature dependence of static magnetic susceptibility in iron-pnictides
• Magnetic Ordering and Negative Thermal Expansion in PrFeAsO
• Possible pairing states of the Fe-based superconductors
• Competing orders in FeAs layers
• Muon spin relaxation studies of magnetic order and superfluid density in antiferromagnetic NdOFeAs, BaFe2As2 and superconducting (Ba,K)Fe2As2
• Strong-coupling superconductivity in layered nickel-based LaO${}_{1-x}$F${}_x$NiAs
• Interplay between magnetic properties and Fermi surface nesting in iron pnictides
• High-Field Pauli-Limiting Behavior and Strongly Enhanced Upper Critical Magnetic Fields near the Transition Temperature of an Arsenic-Deficient LaO_0.9F_0.1FeAs_(1-δ) Superconductor
• Synthesis, crystal structure and spin-density-wave anomaly of the iron arsenide-fluoride SrFeAsF
• SrFeAsF as a parent compound for iron pnictide superconductors
• Narrow superconducting window in Ni-doped LaFeAsO
• Feshbach resonances and mesoscopic phase separation near a quantum critical point in multiband FeAs-based superconductors
• Three- to Two-Dimensional Transition of the Electronic Structure in CaFe2As2 - parent compound for an iron arsenic high temperature superconductor
• Nanoscale superconducting gap variations, strong coupling signatures and lack of phase separation in optimally doped BaFe1.86Co0.14As2
• Normal State Correlated Electronic Structure of Iron Pnictides
• Superconductivity above 50 K in Tb${}_{1-x}$Th${}_x$FeAsO
• MuSR studies of RE(O,F)FeAs (RE = La, Nd, Ce) and LaOFeP systems: possible incommensurate/stripe magnetism and superfluid density
• Phonon Density of States of LaFeAsO1-xFx
• Magnetic and Metallic State at Intermediate Hubbard U Coupling in Multiorbital Models for Undoped Fe Pnictides
• Superconductivity in Fluorine-Arsenide Sr_{1-x}La_xFeAsF
• Correlation effects in the iron pnictides
• Pnictides as frustrated quantum antiferromagnet close to a quantum phase transition
• Short-range incommensurate magnetic order near the superconducting phase boundary in Fe(1+d)Te(1-x)Se(x)
• Magnetic Excitations in the High Tc Iron Pnictides
• Coexistence of two order parameters and a pseudogaplike feature in the iron-based superconductor LaFeAsO_(1-x)F_x
• Microscopic origin of pressure-induced phase transitions in iron-pnictide $AF{e}_{2}A{s}_2$ superconductors: an {ab initio} molecular-dynamics study
• Electron-hole Asymmetry and Quantum Critical Point in Hole-doped BaFe${}_2$As${}_2$
• Neutron scattering study of the oxypnictide superconductor La(O,F)FeAs
• Fermi Surface and Band Renormalization in (Sr,K)Fe${}_2$As${}_2$ Superconductor from Angle-Resolved Photoemission Spectroscopy
• The Delicate Electronic and Magnetic Structure of the LaOFePn System (Pn = pnictogen)
• Thermal properties of SmFeAs(O1-xFx) as probe of the interplay between electrons and phonons
• Band renormalization and Fermi surface reconstruction in iron-based superconductors
• Rare earth magnetism in CeFeAsO: A single crystal study
• Spin Dynamics in Iron-based Layered Superconductor (La_{0.87}Ca_{0.13})FePO Revealed by ^{31}P and ^{139}La NMR Studies
• Electronic structure of Ba(Fe,Ru)2As2 and Sr(Fe,Ir)2As2 alloys
• Non-analytic spin susceptibility of a nested Fermi liquid: the case of Fe-based pnictides
• Suppression of the structural phase transition and lattice softening in slightly underdoped Ba(1-x)K(x)Fe2As2 with electronic phase separation
• Enhanced Orbital Degeneracy in Momentum Space for LaOFeAs
• Heat capacity measurements on FeAs-based compounds: a thermodynamic probe of electronic and magnetic states
• Synthesis, structural and transport properties of the hole-doped Superconductor Pr_{1-x}Sr_xFeAsO
• Effect of Zn doping on magnetic order and superconductivity in LaFeAsO
• Electronic and lattice dynamical properties of the iron-based superconductors LiFeAs and NaFeAs
• Transport and infrared properties of SmFeAs(O1-xFx): from SDW to superconducting ordering
• Symmetry of superconducting states with two orbitals on a tetragonal lattice: application to $La{O}_{1-x}{F}_{x}FeAs$
• Superconductivity induced by oxygen deficiency in Sr-doped LaOFeAs
• Multiorbital Effects on Antiferromagnetism in Fe Pnictides
• The optical phonon spectrum of SmFeAsO
• Effective Hamiltonian for FeAs based superconductors
• Raman spectra in iron-based quaternary CeO${}_{1-x}$F${}_x$FeAs and LaO${}_{1-x}$F${}_x$FeAs
• Resistivity saturation in PrFeAsO${}_{1-x}$F${}_y$ superconductor: An evidence of strong electron-phonon coupling
• Doping evolution of itinerant magnetic excitations in Fe-based oxypnictides
• Vortex state in iron-based superconductors with collinear antiferromagnetic cores
• Valence band and core level photoemission spectros-copy of LaFeAsO${}_{1-x}$F${}_x$
• Upper critical field, superconducting energy gaps, and Seebeck coefficient in La0.8Th0.2OFeAs
• Effect of the tetrahedral distortion on the electronic properties of iron-pnictides
• Properties of KCo${}_2$As${}_2$ and Alloys with Fe and Ru: Density Functional Calculations
• Unconventional pairing originating from disconnected Fermi surfaces in the iron-based superconductor
• Evidence for Local Moment by Electron Spin Resonance Study on Polycrystalline LaFeAsO${}_{1-x}$F${}_x$ (x=0 and 0.13)
• Possible Superconductivity in Fe-Sb Based Materials: Density Functional Study of LiFeSb
• Character of magnetic instabilities in CaFe2As2
• Common Features in Electronic Structure of the Fe-Based Layered Superconductors from Photoemission Spectroscopy
• Anharmonic softening of Raman active phonons in Iron-Pnictides; estimating the Fe isotope effect due to anharmonic expansion
• Experimental determination of the microscopic origin of magnetism in parent iron pnictides
• Theoretical investigation of magnetic order in ReOFeAs, Re = Ce, Pr
• Supercell studies of the Fermi surface changes in the electron-doped superconductor LaFeAsO${}_{1-x}$F${}_x$
• Hidden SDW order and effective low-energy theory for FeAs superconductors
• Enhanced spin density wave in LaOFeSb
• Positron potential and wavefunction in LaFeAsO
• Quantum critical behavior driven by Hund's rule coupling in quantum antiferromagnets
• Anisotropic superconducting properties of aligned Sm${}_{0.95}$La${}_{0.05}$FeAsO${}_{0.85}$F${}_{0.15}$ microcrystalline powder
• Phase Diagram and Quantum Critical Point in Newly Discovered Superconductors: SmO_{1-x}F_xFeAs
• Unconventional superconductivity originating from disconnected Fermi surfaces in the iron-based compound
• Structural properties, defects and structural phase transition in the ROFeM (R=La, Nd; M=As, P) materials
• Impurity states in antiferromagnetic Iron Arsenides
• Pressure Effects on the Superconducting and Spin-Density-Wave States of the Newly Discovered Sm(O1-xFx)FeAs
• Evidence of spin density wave in LaFeAsO, the parent material of the new Fe-based oxypnictide superconductors