Flat bands in graphene based electron systems, topology and correlations

Időpont: 
2024. 03. 19. 14:30
Hely: 
BME building F, lecture hall 13, second floor
Előadó: 
Péter Nemes-Incze (CER)
Topological bands having a vanishing dispersion, commonly referred to as "flat bands," have beed a source of emergent electronic phenomena since the initial discovery of the quantum Hall effect in two-dimensional (2D) electron systems. Recently, flat bands have been identified in 2D van der Waals materials, including graphene-based electron systems. Among these "magic angle" twisted bilayers and rhombohedral graphite, represent particularly accessible and highly tunable platforms for investigating emergent, correlated phenomena, from superconductivity to magnetism. This presentation will provide an overview of the field, incorporating recent findings from my group, and offer a perspective on future research directions.