Topological states in correlated electronic systems
Abstract
<p indent="0mm">Topological quantum materials are an important branch of condensed matter physics. When electron-electron interactions are introduced into topological quantum materials, new exotic electronic states occur. In this review, we mainly focus on the recent progress on the study of topological states in correlated systems through angle-resolved photoemission spectroscopy. Here, two topics are discussed: the topological Kondo insulator and topological states in the Kagome lattice. A topological Kondo insulator is a new topological state induced by the correlation effect in a Kondo insulator, which is proven to exist in SmB<sub>6</sub> and YbB<sub>12</sub> theoretically and experimentally. The unique structure of a Kagome lattice will result in new topological states and strongly correlated flat bands and is found in many material candidates that possess interesting physical properties. Hence, understanding the relationship between the topology and correlations is crucial to further interpret the interactions between strongly correlated electrons and realize new topological electronic states.</p>
