Fermiology and spin densities from x-ray scattering

磁性在许多材料的性质中起着迷人的作用。除了能够产生可以观察或使用的外部磁场外，磁性还可以决定材料本身的其他属性。在我们的项目中，我们将研究这些磁性背后的基本物理学还知之甚少的材料。我们还将对材料中的自旋极化特性进行精确测量，这些特性可能对未来的技术发展有帮助。我们工作的另一个主要方面是进行有助于我们理解超导性的实验。在我们的项目中，我们将研究一组这些材料，其中目前围绕潜在的电子结构存在重大争议，使用不同的实验技术发现不同的结果。我们的实验将有助于解决这些问题。为了提供所需的灵敏度，这些实验都要求我们使用X射线来测量磁特性的具体细节。获得足够强度的X射线和所需的特定特性的唯一方法是使用同步加速器源。有几个这样的世界各地可用。这些实验的同步加速器的选择是基于日本SPring-8同步加速器的特定实验设施和X射线能量。

Magnetism plays a fascinating role in the properties of many materials. As well as being able to create an external magnetic field that can be observed or used, magnetism can determine other properties of the material itself. In our project we will be studying materials where the underlying physics behind these magnetic properties is as yet poorly understood. We will also making accurate measurements of property known as spin polarisation, in materials that could be of use for technological development in the future. The other main aspect of our work is to perform experiments that should contribute to our understanding of superconductivity. In our project we will study a set of these materials where there is currently significant controversy surrounding the underlying electronic structure, with different results being found using different experimental techniques. Our experiments will help to resolve these problems.In order to provide the sensitivities required, these experiments all require us to use x-rays to measure specific details of the magnetic properties. The only way to obtain x-rays of sufficient intensity and with the particular properities required, is to use a synchrotron source. There are a few of these available world-wide. The choice of synchrotron for these experiments was based on the particular experimental facilities and x-ray energy available at the SPring-8 synchrotron in Japan.