Strong local moment antiferromagnetic spin fluctuations in V-doped LiFeAs

Electronic localization in CaVO3 films via bandwidth control

Compatibility of quantitative X-ray spectroscopy with continuous distribution models of water at ambient conditions

Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba(Fe1−xCox)2As2

Doping Dependence of the Second Magnetization Peak, Critical Current Density, and Pinning Mechanism in BaFe2−xNixAs2 Pnictide Superconductors

Anisotropic spin fluctuations in detwinned FeSe

Probing hydrogen bond strength in liquid water by resonant inelastic X-ray scattering

Direct observation of spin excitation anisotropy in the paramagnetic orthorhombic state of BaFe2-xNixAs2

Spin-isotropic continuum of spin excitations in antiferromagnetically ordered Fe1.07Te

Spin-isotropic continuum of spin excitations in antiferromagnetically ordered Fe1.07Te

Spin Waves in Detwinned BaFe2As2

Oxygen redox chemistry without excess alkali-metal ions in Na2/3[Mg0.28Mn0.72]O2

Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen K-edge resonant inelastic x-ray scattering

Direct observation of spin excitation anisotropy in the paramagnetic orthorhombic state of BaFe2−xNixAs2

Uniaxial pressure effect on the magnetic ordered moment and transition temperature in BaFe2-xTxAs2 (T = Co, Ni)

Spin excitation anisotropy in the paramagnetic tetragonal phase of BaFe2As2

Local and collective magnetism of EuFe2As2

Zone plates as imaging analyzers for resonant inelastic x-ray scattering

Spin excitation anisotropy in the paramagnetic tetragonal phase of BaFe2As2

Magnetic fluctuations in BaFe2-xNixAs2 superconductors

Two-dimensional massless Dirac fermions in antiferromagnetic AFe2As2 (A=Ba, Sr)

Angular-dependent magnetic torque in iron-pnictide BaFe2-xNixAs2

Doping evolution of magnetic order and magnetic excitations in (SrLa)3Ir2O7

Temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped NaFe1.9785Co0.0215As

Spin anisotropy due to spin-orbit coupling in optimally hole-doped Ba0.67K0.33Fe2As2

Electronic specific heat in BaFe2-xNixAs2

Effect of nematic order on the low-energy spin fluctuations in detwinned BaFe1.935Ni0.065As2

Impact of uniaxial pressure on structural and magnetic phase transitions in electron-doped iron pnictides

Nematic quantum critical fluctuations in BaFe2-xNixAs2

Structural and magnetic phase transitions near optimal superconductivity in BaFe2(As1-xPx)2

Energy dependence of the spin excitation anisotropy in uniaxial-strained BaFe0.9Ni0.1As2

Electronic nematic correlations in the stress-free tetragonal state of BaFe2-xNixAs2

Electron doping dependence of the anisotropic superconductivity in BaFe2-xNixAs2

Neutron spin resonance as a probe of superconducting gap anisotropy in partially detwinned electron underdopedNaFe0.985Co0.015As

Neutron spin resonance as a probe of superconducting gap anisotropy in partially detwinned electron underdoped NaFe0.985Ni0.015As

Doping evolution of antiferromagnetism and transport properties in nonsuperconducting BaFe2-2xNixCrxAs2

Nodeless superconductivity in the presence of spin-density wave in pnictide superconductors: The case of BaFe2-xNixAs2

Doping evolution of antiferromagnetism and transport properties in nonsuperconductingBaFe2−2xNixCrxAs2

The effect of Cr impurity to superconductivity in electron-doped BaFe2-xNixAs2

Surface impedance in the antiferromagnetic and superconducting states of underdoped BaFe1.93Ni0.07As2 crystals

Surface impedance of BaFe2-xNixAs2 crystals

Nematic spin correlations in the tetragonal state of uniaxial-strained BaFe2-xNixAs2

Short-range cluster spin glass near optimal superconductivity in BaFe2-xNixAs2

Nematic spin correlations in the tetragonal state of uniaxial-strained BaFe2−xNixAs2

Understanding the microscopic origins of electronic phases in high-transition temperature (high-Tc) superconductors is important for elucidating the mechanism of superconductivity. In the paramagnetic tetragonal phase of BaFe2−xTxAs2 (where T is Co or Ni) iron pnictides, an in-plane resistivity anisotropy has been observed. Here, we use inelastic neutron scattering to show that low-energy spin excitations in these materials change from fourfold symmetric to twofold symmetric at temperatures corresponding to the onset of the in-plane resistivity anisotropy. Because resistivity and spin excitation anisotropies both vanish near optimal superconductivity, we conclude that they are likely intimately connected.

Spin Excitation Anisotropy as a Probe of Orbital Ordering in the Paramagnetic Tetragonal Phase of SuperconductingBaFe1.904Ni0.096As2

Electron doping evolution of the magnetic excitations in BaFe2−xNixAs2

Avoided Quantum Criticality and Magnetoelastic Coupling inBaFe2−xNixAs2

Electron doping evolution of the magnetic excitations in BaFe2-xNixAs2

Avoided quantum criticality and magnetoelastic coupling in BaFe2-xNixAs2

Doping dependence of spin excitations and its correlations with high-temperature superconductivity in iron pnictides

Spin excitation anisotropy as a probe of orbital ordering in the paramagnetic tetragonal phase of superconducting BaFe1.904Ni0.096As2

Distinguishing s± and s++ electron pairing symmetries by neutron spin resonance in superconducting NaFe0.935Co0.045As

Uniaxial pressure effect on structural and magnetic phase transitions in NaFeAs and its comparison with as-grown and annealed BaFe2As2

Paramagnetic spin excitations in insulating Rb0.8Fe1.6Se2

Coexistence and competition of the short-range incommensurate antiferromagnetic order with the superconducting state of BaFe2-xNixAs2

Elastic anomalies in BaFe2−xNixAs2 crystals

Neutron scattering studies of spin excitations in superconducting Rb0.82Fe1.68Se2

Electron doping evolution of the anisotropic spin excitations in BaFe2−xNixAs2

Electron doping evolution of the anisotropic spin excitations in BaFe2-xNixAs2

Electron-boson coupling and two superconducting gaps in optimally electron-doped BaFe1.9Ni0.1As2 single crystals

Coexistence and Competition of the Short-Range Incommensurate Antiferromagnetic Order with the Superconducting State ofBaFe2−xNixAs2

Effect of the in-plane magnetic field on the neutron spin resonance in optimally doped FeSe0.4Te0.6 and BaFe1.9Ni0.1As2 superconductors

Systematic growth of BaFe2 −xNixAs2large crystals

Effect of the in-plane magnetic field on the neutron spin resonance in optimally doped FeSe0.4Te0.6and BaFe1.9Ni0.1As2superconductors

Fishtail and vortex dynamics in the Ni-doped iron pnictide BaFe1.82Ni0.18As2

Normal-State Hourglass Dispersion of the Spin Excitations inFeSexTe1−x

Normal-state hourglass dispersion of the spin excitations in FeSexTe1-x