Itinerant electrons on frustrated lattices (A03)

该项目的目标是对具有巡回载流子的受挫磁系统有一个基本的了解，特别是通过主要使用数值方法来识别和预测拓扑上非平凡状态的存在。与将要研究的问题有关的模型哈密顿量也捕获了感兴趣材料的基本低能物理性质，大致分为两类：描述巡回电子与定域自旋相互作用的近藤晶格模型以及电子具有部分巡回和部分定域性质的(多轨道)Hubbard类型模型。

The project aims at a fundamental understanding of frustrated magnetic systems that have itinerant charge carriers, in particular to identify and predict the presence of topologically nontrivial states, by using primarily numerical methods. The model Hamiltonians relevant to the questions to be investigated, which also capture the essential low-energy physical properties of materials of interest, broadly fall into two classes: Kondo-lattice models describing itinerant electrons that interact with localized spins as well as (multi-orbital) Hubbard-type models where electrons have partly itinerant and partly localized character.