Itinerant electrons on frustrated lattices (A03)

该项目旨在对具有流动载流子的受挫磁系统有一个基本的理解，特别是通过主要的数值方法来识别和预测拓扑非平凡状态的存在。与要研究的问题相关的模型哈密顿量，也捕获了感兴趣的材料的基本低能物理性质，大致分为两类：描述与局域自旋相互作用的流动电子的近藤晶格模型，以及电子具有部分流动和部分局域特征的（多轨道）哈伯德模型。

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.