Spin and Charge Correlations in Quantum MaterialsSpin and Charge Correlations in Quantum Materials

我们将研究集体自旋和电荷涨落与各种量子材料的体物理性质之间的关系。近年来，人们发现过渡金属材料可以被设计成显示集体低能自旋和电荷激发。这些波动反过来可以改变物理性质或稳定新的有序状态。例如，自旋激发可以通过介导电子之间的吸引力来引起超导性，或者通过“无序机制中的有序”来稳定磁有序。在这里，我们将使用中子和X射线散射直接探测激发。我们还将在布里斯托进行实验室测量和样品制备。测量将通过模型理论和第一原理（DFT）计算的电子结构，磁激发，声子解释。研究材料将包括铜酸盐和其他过渡金属氧化物，以及其他主题材料。该项目福尔斯EPSRC研究领域，超导性，凝聚态物质：电子结构，凝聚态物质：磁性和磁性材料。

We will investigate the relationship between collective spin and charge fluctuations and the bulk physical properties of various quantum material. In recent years, it has been found that transition metal materials can be engineered to display collective low-energy spin and charge excitations. These fluctuations can in turn modify physical properties or stabilize new ordered states. For example, spin excitations can cause superconductivity by mediating an attraction between electrons or stabilise magnetic order through "order through disorder mechanism". Here we will use neutron and x-ray scattering to directly probe the excitations. We will also make laboratory measurement and prepare sample in Bristol. Measurements will be interpreted through model theories and first principle (DFT) calculations of the electronic structure, magnetic excitations, and phonons. Materials to be studied will include cuprates and other transition metal oxides, and other topical materials.This project falls within the EPSRC research areas, Superconductivity, Condensed matter: electronic structure, Condensed matter: magnetism and magnetic materials.