Magnetic form factor of SrFe${}_2$As${}_2$

Abstract

Neutron diffraction measurements have been carried out to investigate the magnetic form factor of the parent SrFe2As2 system of the iron-based superconductors. The general feature is that the form factor is approximately isotropic in wave vector, indicating that multiple d-orbitals of the iron atoms are occupied as expected based on band theory. Inversion of the diffraction data suggests that there is some elongation of the spin density toward the As atoms. We have also extended the diffraction measurements to investigate a possible jump in the c-axis lattice parameter at the structural phase transition, but find no detectable change within the experimental uncertainties.

References in corpus (8)

• Ising and Spin orders in Iron-based Superconductors
• Spin and Lattice Structure of Single Crystal SrFe2As2
• Neutron Studies of the Iron-based Family of High TC Magnetic Superconductors
• Strong coupling between magnetic and structural order parameters in SrFe2As2
• Electronic Structure of Fe-Based Superconductors
• Anisotropy, Itineracy, and Magnetic Frustration in High-Tc Iron Pnictides
• Evolution of the bulk properties, structure, magnetic order, and superconductivity with Ni doping in CaFe2-xNixAs2
• The magnetic form factor of iron in SrFe2As2

Cited by in corpus (8)

• The Puzzle of High Temperature Superconductivity in Layered Iron Pnictides and Chalcogenides
• Electron-doping evolution of the low-energy spin excitations in the iron arsenide BaFe${}_{2-x}$Ni${}_x$As${}_2$ superconductors
• Superconductivity, Antiferromagnetism, and Neutron Scattering
• Anisotropic Neutron Spin Resonance in Superconducting BaFe${}_{1.9}$Ni${}_{0.1}$As${}_2$
• Magnetisation distribution in the tetragonal phase of BaFe2As2
• Spin waves in the (0,pi) and (0,pi,pi) ordered SDW states of the t-t' Hubbard model: Application to doped iron pnictides
• Magnetization distribution and orbital moment in the non-Superconducting Chalcogenide Compound K0.8Fe1.6Se2
• Magnetic form factor analysis on detwinned single crystal of BaFe${}_2$As${}_2$