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Fermiology and spin densities from x-ray scattering

X 射线散射的费米学和自旋密度

基本信息

批准号：
EP/J003492/1
负责人：
Jon Duffy
金额：
$ 19.11万
依托单位：
University of Warwick
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2011
资助国家：
英国
起止时间：
2011 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FJ003492%2F1
关键词：
Fermiology spin densities ray scattering

项目摘要

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.

磁性在许多材料的特性中发挥着令人着迷的作用。除了能够产生可观察或使用的外部磁场之外，磁性还可以确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特性背后的基本物理原理目前还知之甚少的材料。我们还将对材料中被称为自旋极化的特性进行精确测量，这些材料可用于未来的技术开发。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，目前围绕底层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，这些实验都需要我们使用X射线来测量磁特性的具体细节。获得足够强度并具有所需特定性质的 X 射线的唯一方法是使用同步加速器源。其中一些在世界范围内可用。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可用的 X 射线能量。

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Magnetic frustration, short-range correlations and the role of the paramagnetic Fermi surface of PdCrO2.

DOI：
10.1038/srep12428
发表时间：
2015-07-24
期刊：
Scientific reports
影响因子：
4.6
作者：
Billington D;Ernsting D;Millichamp TE;Lester C;Dugdale SB;Kersh D;Duffy JA;Giblin SR;Taylor JW;Manuel P;Khalyavin DD;Takatsu H
通讯作者：
Takatsu H

What we can learn from magnetic Compton scattering: application to the determination of spin polarization

我们可以从磁康普顿散射中学到什么：在自旋极化测定中的应用