Two-dimensional resonant magnetic excitation in BaFe1.84Co0.16As2

Abstract

Inelastic neutron scattering measurements on single crystals of superconducting BaFe1.84Co0.16As2 reveal a magnetic excitation located at wavevectors (1/2 1/2 L) in tetragonal notation. On cooling below TC, a clear resonance peak is observed at this wavevector with an energy of 8.6(0.5) meV, corresponding to 4.5(0.3) kBTC. This is in good agreement with the canonical value of 5 kBTC observed in the cuprates. The spectrum shows strong dispersion in the tetragonal plane but very weak dispersion along the c-axis, indicating that the magnetic fluctuations are two-dimensional in nature. This is in sharp contrast to the anisotropic three dimensional spin excitations seen in the undoped parent compounds.

Include additional data showing dispersion

References in corpus (27)

• 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${}_x$}
• LaFeAsO${}_{1-x}$F${}_x$: A low carrier density superconductor near itinerant magnetism
• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• The superconductivity at 18 K in LiFeAs system
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Superconductivity and Phase Diagram in the Iron-based Arsenic-oxides ReFeAsO1-delta (Re = rare earth metal) without F-Doping
• Competing Orders and Spin-Density-Wave Instability in La(O${}_{1-x}$F${}_x$)FeAs
• Tellurium substitution effect on superconductivity of the alpha-phase Iron Selenide
• Is LaO${}_{1-x}$F${}_x$FeAs an electron-phonon superconductor ?
• Funtional Renormalization Group Study of the Pairing Symmetry and Pairing Mechanism of the FeAs Based High Temperature Superconductors
• Two Gaps Make a High Temperature Superconductor?
• Lattice and magnetic instabilities in CaFe2As2: A single crystal neutron diffraction study
• Phase transitions in LaFeAsO: structural, magnetic, elastic, and transport properties, heat capacity and Mossbauer spectra
• Theory of magnetic excitations in iron-based layered superconductors
• Spin resonance in the d-wave superconductor CeCoIn5
• Scanning Tunneling Spectroscopy and Vortex Imaging in the Iron-Pnictide Superconductor BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$
• Spin and Lattice Structure of Single Crystal SrFe2As2
• Neutron scattering as a probe of the Fe-pnicitide superconducting gap
• Low energy spin waves and magnetic interactions in SrFe${}_2$As${}_2$
• Spin susceptibility, phase diagram, and quantum criticality in the electron-doped high Tc Superconductor Ba[Fe(1-x)Co(x)]2As2
• Neutron diffraction on antiferromagnetic ordering in single-crystal BaFe2As2
• Anisotropic three-dimensional magnetism in CaFe2As2
• Phonon Density of States of LaFeAsO1-xFx

Cited by in corpus (62)

• High-temperature superconductivity in iron-based materials
• Magnetism and its microscopic origin in iron-based high-temperature superconductors
• Magnetism in Fe-based superconductors
• From (pi, 0) magnetic order to superconductivity with (pi, pi) magnetic resonance in Fe1.02(Te1-xSex)
• Iron based superconductors: magnetism, superconductivity and electronic structure
• Iron based high transition temperature superconductors
• Spin Gap and Resonance at the Nesting Wavevector in Superconducting FeSe0.4Te0.6
• Spin fluctuations and superconductivity in a 3D tight-binding model for BaFe2As2
• Itinerant magnetic excitations in antiferromagnetic CaFe2As2
• Nature of magnetic excitations in superconducting BaFe${}_{1.9}$Ni${}_{0.1}$As${}_2$
• Symmetry of spin excitation spectra in the tetragonal paramagnetic and superconducting phases of 122-ferropnictides
• Neutron Scattering Resonance and the Fe-pnictide Superconducting Gap
• Crossover from weak to strong pairing in unconventional superconductors
• Spin waves in the $(\pi ,0)$ magnetically ordered iron chalcogenide Fe${}_{1.05}$Te
• Incommensurate spin fluctuations in hole-overdoped superconductor KFe2As2
• 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
• Superconducting Properties of the $s^{\pm }$-wave state: Fe-based superconductors
• Infrared Measurement of the Pseudogap in P-Doped and Co-Doped BaFe2As2 High-Temperature Superconductors
• Large decrease in the critical temperature of superconducting LaFeAsO0.85 compounds doped with 3% atomic weight of nonmagnetic Zn impurities
• Anisotropic Neutron Spin Resonance in Superconducting BaFe${}_{1.9}$Ni${}_{0.1}$As${}_2$
• Disappearance of static magnetic order and evolution of spin fluctuations in Fe${}_{1+\delta }$Se${}_x$Te${}_{1-x}$
• Competition between stripe and checkerboard magnetic instabilities in Mn-doped BaFe2As2
• Electron doping evolution of the anisotropic spin excitations in BaFe2-xNixAs2
• Inelastic neutron scattering study on the resonance mode in an optimally doped superconductor LaFeAsO${}_{0.92}$F${}_{0.08}$
• Theory of Raman response in a superconductor with extended s-wave symmetry: Application to Fe-pnictides
• Magnetic excitations of Fe_{1+y}Se_xTe_{1-x} in magnetic and superconductive phases
• Dispersion of the superconducting spin resonance in underdoped and antiferromagnetic Ba(Fe1-xCox)2As2
• Two energy scales in the magnetic resonance spectrum of electron and hole doped pnictide superconductors
• Unconventional density waves and superconductivities in Fe-based superconductors and other strongly correlated electron systems
• Anisotropic neutron spin resonance in underdoped superconducting NaFe1-xCoxAs
• Spectral analysis for the iron-based superconductors: Anisotropic spin fluctuations and fully gapped s^{\pm}-wave superconductivity
• Magnetic anisotropy in hole-doped superconducting Ba 0.67K 0.33Fe 2As2 probed by polarized inelastic neutron scattering
• Spin Exciton Formation inside the Hidden Order Phase of CeB6
• On infrared pseudogap in cuprate and pnictide high-temperature superconductors
• Polarized neutron scattering studies of magnetic excitations in electron-overdoped superconducting BaFe${}_{1.85}$Ni${}_{0.15}$As${}_2$
• Anisotropy of incommensurate magnetic excitations in slightly overdoped Ba${}_{0.5}$K${}_{0.5}$Fe${}_2$As${}_2$ probed by polarized inelastic neutron scattering experiments
• Eliashberg theory for spin-fluctuations mediated superconductivity -- Application to bulk and monolayer FeSe
• Magnonlike dispersion of spin resonance in Ni-doped BaFe${}_2$As${}_2$
• Spin excitations in optimally P-doped BaFe2(As0.7P0.3)2superconductor
• Spin anisotropy due to spin-orbit coupling in optimally hole-doped Ba${}_{0.67}$K${}_{0.33}$Fe${}_2$As${}_2$
• Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba(Fe1-xCox)2As2
• Spin excitation anisotropy in optimal-isovalent-doped superconductor BaFe2(As0.7P0.3)2
• Signatures of pairing in the magnetic excitation spectrum of strongly correlated ladders
• Quasi-2D behavior of 112-type iron-based superconductors
• Low energy magnetic excitations from the Fe${}_{1+y-z}$(Ni/Cu)${}_z$Te${}_{1-x}$Se${}_x$ system
• Orbital selective neutron spin resonance in underdoped superconducting NaFe${}_{\text{0.985}}$Co${}_{\text{0.015}}$As
• Nodeless two-gap superconductivity in stoichiometric iron pnictide LiFeAs
• The effect of spin fluctuations on the electronic structure in iron based superconductors
• Evidence of electron interaction with an unidentified bosonic mode in superconductor CsCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Neutron spin resonance as a probe of superconducting gap anisotropy in partially detwinned electron underdoped NaFe${}_{0.985}$Co${}_{0.015}$As
• Doping evolution of the gap structure and spin-fluctuation pairing in $Ba(F{e}_{1-x}C{o}_x{)}_{2}A{s}_2$ superconductors
• Anisotropic inplane spin correlation in the parent and Co-doped BaFe2As2: a neutron scattering study
• High-energy spin fluctuation in low-$T_{\mathrm{c}}$ iron-based superconductor LaFePO${}_{0.9}$
• Electron-boson spectral density of LiFeAs obtained from optical data
• Anisotropy of the superconducting fluctuations in multiband superconductors: the case of LiFeAs
• Anomalous Superconducting-Gap Structure of Slightly Overdoped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Lifetimes of Magnons in Two-Dimensional Diluted Ferromagnetic Systems
• Strong electron-boson coupling in the iron-based superconductor BaFe1.9Pt0.1As2 revealed by infrared spectroscopy
• Effect of pairing fluctuations on the spin resonance in Fe-based superconductors
• Polarized neutron scattering studies of magnetic excitations in iron-selenide superconductor (Li${}_{0.8}$Fe${}_{0.2}$)ODFeSe ($T_c$ = 41 K)
• Ground and Applied-Field-Driven Magnetic States of Antiferromagnets
• Q Dependence of Magnetic Resonance Mode on FeTe${}_{0.5}$Se${}_{0.5}$ Studied by Inelastic Neutron Scattering