Topological phases in heavy-fermion insulators and semimetals, and the importanceof time-reversal or inversion symmetry (C06)

重费米子绝缘体和半金属的拓扑相，以及时间反转或反演对称性的重要性（C06）

• 批准号: 276846545
• 金额: --
• 依托单位: Physikalisches Institut
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/276846545?language=en
• 关键词: Topological; phases; heavy; fermion; insulators

We aim at the physical realization of rare-earth based topological materials and their systematic investigation by different spectroscopic methods. The starting point are mainly ternary compounds containing cerium or thulium. In addition to using bulk samples, a particular emphasis will be on the in situ MBE growth, which allows a more flexible preparation in a larger phase space area. The samples will be investigated by angle resolved photoemission spectroscopy (ARPES, SR-ARPES) and X-ray methods (XAS, XMC/LD, resonant reflectivity), yielding fundamental information about the relevant microscopic physical parameters and their complex interplay.

我们旨在通过不同光谱方法对基于稀土的拓扑材料进行物理实现及其系统研究。起点主要是含有石或thulium的三元化合物。除了使用大量样品外，还将特别重点放在原位MBE增长上，这允许在较大的相空间区域进行更灵活的准备。样品将通过角度分辨光发射光谱（ARPES，SR-ARPES）和X射线方法（XAS，XMC/LD，谐振反射率）进行研究，从而得出有关相关显微镜物理参数及其复杂的相互作用的基本信息。