Non-resonant inelastic x-ray scattering involving excitonic excitations

Abstract

In a recent publication Larson \textit{et al.} reported remarkably clear $d$-$d$ excitations for NiO and CoO measured with x-ray energies well below the transition metal $K$ edge. In this letter we demonstrate that we can obtain an accurate quantitative description based on a local many body approach. We find that the magnitude of $\vec{q}$ can be tuned for maximum sensitivity for dipole, quadrupole, etc. excitations. We also find that the direction of $\vec{q}$ with respect to the crystal axes can be used as an equivalent to polarization similar to electron energy loss spectroscopy, allowing for a determination of the local symmetry of the initial and final state based on selection rules. This method is more generally applicable and combined with the high resolution available, could be a powerful tool for the study of local distortions and symmetries in transition metal compounds including also buried interfaces.

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Cited by in corpus (42)

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• Theory of time-resolved non-resonant x-ray scattering for imaging ultrafast coherent electron motion
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• Cu $K$-edge Resonant Inelastic X-Ray Scattering in Edge-Sharing Cuprates
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• Synchrotron Radiation Techniques and their Application to Actinide Materials
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• Probing high-energy electronic excitations using inelastic neutron scattering
• Dynamical Linear Response of TDDFT with LDA+U Functional: strongly hybridized Frenkel excitons in NiO
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• Direct imaging of orbitals in quantum materials
• (C${}_4$H${}_{12}$N${}_2$)[CoCl${}_4$] -tetrahedrally coordinated Co${}^{2+}$ without the orbital degeneracy
• Origin of Ising magnetism in Ca3Co2O6 unveiled by orbital imaging
• Effective Operator for $dd$ Transitions in Nonresonant Inelastic X-ray Scattering
• Nature of optical excitations in the frustrated kagome compound Herbertsmithite
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• Possible multi-orbital ground state in CeCu${}_2$Si${}_2$
• Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI${}_3$
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• Orientation of ground-state orbital in CeCoIn${}_5$ and CeRhIn${}_5$
• Charge-transfer and Mott-Hubbard Excitations in FeBO3: Fe K edge Resonant Inelastic X-ray Scattering Study
• First-principles method of propagation of tightly bound excitons: exciton band structure of LiF and verification with inelastic x-ray scattering
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• Excitonic transverse and amplitude fluctuations in the noncollinear and charge-ordered RbFe${}^{2+}$Fe${}^{3+}$F${}_6$
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• Orbital-selective electronic excitations in iron arsenides revealed by simulated nonresonant inelastic x-ray scattering
• Selective orbital imaging of excited states with x-ray spectroscopy: the example of $\alpha$-MnS
• Simulations for x-ray imaging of wave-packet dynamics
• f-electron charge densities probed using core level non-resonant inelastic x-ray scattering