Understanding the properties of the rare earth hexaborides - A synergistic approach based on spectroscopy and computational methods

了解稀土六硼化物的性质 - 基于光谱学和计算方法的协同方法

• 批准号: 278205978
• 负责人: Professor Dr. Peter E. Blöchl
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/278205978?language=en
• 关键词: Understanding; properties; rare; earth; hexaborides

The goal of our project is to jointly develop new experimental, computational and theoretical methods to study complex emergent phenomena in correlated electronic systems. We will focus on the rare-earth hexaborides, which display complex competing phases that are of great present interest to the community, including competing ground states and quantum criticality. Our interest lies in exploring the role of the 4f hybridization in the properties of the compound. We propose a systematic study across the 4f series as well as some selected doping studies. The methodology will incorporate a full range of scientific inquiry, i.e. state of the art characterization and spectroscopy, high-performance computation and theory. Our focus on spectroscopy will furthermore enable us to observe and possibly disentangle the different energy scales present in the f-shell and their influence on the physical properties in this series. The successful completion of the project might lead to a better understanding of the REB6 in particular and correlated systems in general. It furthermore might provide a quantitative, material-specific description of f-electron compounds with its vast array of ground states from heavy Fermion paramagnetic to magnetic and orbital order.

我们项目的目标是共同开发新的实验、计算和理论方法来研究相关电子系统中复杂的涌现现象。我们将重点关注稀土六硼化物，它们表现出复杂的竞争相，这些相是目前业界非常感兴趣的，包括竞争基态和量子临界性。我们的兴趣在于探索 4f 杂化在化合物性质中的作用。我们建议对 4f 系列进行系统研究以及一些选定的兴奋剂研究。该方法将纳入全方位的科学探究，即最先进的表征和光谱、高性能计算和理论。我们对光谱学的关注将使我们能够观察并可能解开 f 壳层中存在的不同能级及其对本系列物理性质的影响。该项目的成功完成可能会导致人们更好地了解 REB6（特别是 REB6）和一般相关系统。此外，它还可以提供对 f 电子化合物的定量、特定于材料的描述，其具有从重费米子顺磁到磁和轨道有序的大量基态。

项目成果

Scanning Tunneling Spectroscopy of Rare Earth Hexaborides

稀土六硼化物的扫描隧道光谱

• DOI: 10.53846/goediss-8381
• 发表时间: 2020
• 作者: Philipp Buchsteiner