Flat Club - Nicolas Ubrig

21.04.2023 12:00 – 14:00

Excitons in Semiconductor van der Waals Heterostructures
Nicolas Ubrig, Université de Genève, DQMP

Atomically thin semiconductors can be stacked on top of each other with limitless possibilities because there is no need for chemical compatibility or lattice match. Combining these materials leads to the emergence of a broad gamut of new physical phenomena. Here, we will focus on different aspects of interlayer excitons which are bound electron-hole pairs whose individual constituents reside in different layers. In van der Waals heterostructures, excitons can be direct or indirect in real space, affected by the underlying (moiré) superlattice, or used as a probe for correlated electronic states. We will discuss these different features in the talk of the day.
Reference: Mak & Shan, Nature Nanotechnology 17, 686-695 (2022)

Lieu

Bâtiment: Ecole de Physique

Auditoire Stueckelberg
Pizza: 12:00, Start discussion: 12:30

entrée libre