Spin, charge and lattice correlations in Correlated Electron Systems

非常规超导体和其他量子材料从自旋、电荷和晶格的集体激发之间的相互作用中收集其独特的特性。本项目是利用散射技术研究这些激发和关联。传统上用中子散射和非共振x射线散射来研究集体激发。然而，共振非弹性x射线光谱学（RIXS）是一种新的、非常强大的工具，它可以探测自旋激发、电荷激发、声子及其相互耦合。在这个项目中，我们将使用钻石最先进的（共振非弹性x射线光谱）RIXS i21设备，与其他中子和x射线设备一起研究新型和局部量子材料，如铜超导体La2-xSrxCuO4， YBa2Cu3O6+x， Bi2Sr2-xLaxCuO6+x和相关电子系统，如钌酸盐和镍酸盐。目的是确定上述激励如何与这些系统的物理性质相关，并通过与理论进行定量比较来开发RIXS作为新型电子材料的探针。

Unconventional superconductors and other quantum materials glean their unique properties from the interplay between the collective excitation of spin, charge and the crystal lattice. This project is to study these excitations and correlations using scattering techniques. Collective excitations have traditionally been studied using neutrons scattering and non-resonant x-ray scattering. However, resonant inelastic x-ray spectroscopy (RIXS) is a new and extraordinarily powerful tool which can probe spin excitations, charge excitations, phonons, and their mutual coupling. In this project we will use the state of-the-art (resonant inelastic x-ray spectroscopy) RIXS i21 facility at Diamond, together with other neutron and x-ray facilities to investigate novel and topical quantum materials such as the cuprate superconductors La2-xSrxCuO4, YBa2Cu3O6+x, Bi2Sr2-xLaxCuO6+x and correlated electron systems such as ruthenates and nickelates. The aim is to determine how the excitations mentioned above are related to the physical properties of these systems and to develop the RIXS as a probe of novel electronic materials by making quantitative comparisons with theory.