Spin, charge and lattice correlations in Correlated Electron Systems

相关电子系统中的自旋、电荷和晶格相关性

• 批准号: 2467738
• 金额: --
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2467738
• 关键词: Spin; charge; lattice; correlations; Correlated

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.

非传统的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它们独特的性质。本计画将利用散射技术来研究这些激发与关联。集体激发传统上是用中子散射和非共振x射线散射来研究的。然而，共振非弹性X射线光谱（RIXS）是一个新的和非常强大的工具，可以探测自旋激发，电荷激发，声子，以及它们的相互耦合。在这个项目中，我们将使用最先进的（共振非弹性X射线光谱）RIXS i21设备在钻石，连同其他中子和X射线设施，以研究新的和局部的量子材料，如铜酸盐超导体La 2-xSrxCuO 4，YBa 2Cu 3 O 6 +x，Bi 2Sr 2-xLaxCuO 6 +x和相关的电子系统，如铼酸盐和镍酸盐。目的是确定上述激发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。