Yves Kwan (Dallas), "Strongly-correlated topological phenomena in graphene multilayers" 

Abstract: Multilayer rhombohedral graphene has recently been experimentally demonstrated to host a panoply of strongly-correlated and topological phenomena. In the presence of alignment to hBN, this platform exhibits Chern insulators and the fractional quantum anomalous Hall effect. On the other hand, signatures of unconventional (chiral) superconductivity arise in pristine multilayers. From a theoretical standpoint, several key issues are under active debate. In particular, what is the nature of the moire effect in this setting? How can we understand the emergence of these exotic topological states? I will discuss our progress towards resolving these questions, and highlight broader implications for other material platforms.