應用X光非彈性散射研究Fe3O4之電子激發態

Abstract

The electronic structure of strongly correlated electronic systems is an important subject in condensed matter physics. The properties of solids are related to the electronic states of outer electrons, the valence electron states. Resonant inelastic X-ray scattering (RIXS) is a powerful tool to study the electron excitations in solids. From the excitation and de-excitation processes, the electronic structure can be further revealed. We here investigated the magnetic properties of magnetite (Fe3O4) by measuring and calculating the 1s2p RIXS spectra. We also recorded the signal of magnetic circular dichroism by measuring the 1s2p RIXS. The mixed valence and multisite of [Fe3]tetra[Fe2Fe3]octaO4 are recognized in the RIXS-MCD spectra. The RIXS-MCD spectra obtained with opposite helicities of circularly polarized incident x-rays are consistent with the simulations by the charge transfer multiplet model.

The electronic structure of strongly correlated electronic systems is an important subject in condensed matter physics. The properties of solids are related to the electronic states of outer electrons, the valence electron states. Resonant inelastic X-ray scattering (RIXS) is a powerful tool to study the electron excitations in solids. From the excitation and de-excitation processes, the electronic structure can be further revealed. We here investigated the magnetic properties of magnetite (Fe3O4) by measuring and calculating the 1s2p RIXS spectra. We also recorded the signal of magnetic circular dichroism by measuring the 1s2p RIXS. The mixed valence and multisite of [Fe3]tetra[Fe2Fe3]octaO4 are recognized in the RIXS-MCD spectra. The RIXS-MCD spectra obtained with opposite helicities of circularly polarized incident x-rays are consistent with the simulations by the charge transfer multiplet model.