Spin and Orbital Characters of Excitations in Iron Arsenide Superconductors Revealed by Simulated Fe L-Edge RIXS

Abstract

We theoretically examine the orbital excitations coupled to the spin degree of freedom in the parent state of the iron-arsenide superconductor, based on the calculation in a five-band itinerant model. The calculated Fe $L_3$-edge resonant inelastic x-ray scattering (RIXS) spectra disclose the presence of spin-flip excitations involving several specific orbitals. Magnon excitations predominantly composed of a single orbital component can be seen in experiments, although its spectral weight is smaller than spin-flipped interorbital high-energy excitations. The detailed polarization and momentum dependence is also discussed with predictions for the experiments.

References in corpus (8)

• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Magnetism in Fe-based superconductors
• Magnetism and Charge Dynamics in Iron Pnictides
• Orbital Order and Spontaneous Orthorhombicity in Iron Pnictides
• Itinerant magnetic excitations in antiferromagnetic CaFe2As2
• Itinerant Spin Excitations in SrFe2As2 Measured by Inelastic Neutron Scattering
• Spin and Charge Dynamics Ruled by Antiferromagnetic Order in Iron Pnictides

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• Anisotropic magnetic excitations and incipient Néel order in Ba(Fe${}_{1-x}$Mn${}_x$)${}_2$As${}_2$
• Spin Dynamics and Resonant Inelastic X-ray Scattering in Chromium with Commensurate Spin-Density Wave Order
• Incoherent electronic band states in Mn-substituted BaFe${}_2$As${}_2$
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