Theoretical study on resonant x-ray scattering from strongly correlated electron systems

我们已经研究了共振x射线散射和相关的x射线光谱，通过构建模型的基础上详细的电子结构。对于具有破缺空间反演对称性的系统，我们通过详细的计算阐明了共振x射线散射、x射线吸收、光吸收和二次谐波产生特性的起源。在LaMnO_3的共振非弹性X射线散射中，我们计算了与动量转移有关的谱，得出结论：它们是由电荷激发屏蔽中间态的芯空穴引起的。

We have studied resonant x-ray scattering and related x-ray spectroscopy by constructing models based on detailed electronic structures. For systems with breaking space-inversion symmetry, we have clarified the origin of the characteristics in resonant x-ray scattering, x-ray absorption, optical absorption, and second-harmonic generation through detailed calculations. In the resonant inelastic x-ray scattering form LaMnO_3, we have calculated the spectra depending on the momentum transfer, having concluded that they arises from the charge excitations screening the core hole in the intermediate state.