Dresden 2020 – wissenschaftliches Programm
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SYWH 1: Physics of van der Waals 2D heterostructures
Mittwoch, 18. März 2020, 15:00–17:30, HSZ 02
Van der Waals heterostructures based on 2D layered materials provide an exciting platform to engineer and control electronic, transport, optical and magnetic properties. Novel phenomena, which arise from twisting, straining, gating, or doping of the heterostructures are a subject of intensive investigations in Germany and worldwide. Emergence of strong correlations, stemming from band flattening in twisted bilayer graphene is a spectacular example of how radically the electronic structure can change by misaligning the weakly bonded layers. In addition to twisted graphene bilayers, which exhibit superconductivity at the magic angle, researchers find remarkable effects in twisting transition metal dichalcogenides. Novel topological phases have been observed in engineered 2D nanostructures and van der Waals heterostructures harbor fascinating many-body excitations which give distinct optical responses. Finally, it has been shown that ultrafast laser field application allows for a striking control over the carrier dynamics in the 2D realm, allowing to push the carriers across the valleys in the momentum space. The aim of this symposium is to present an overview of those recent developments by leading experts in this forefront area of condensed matter physics.
|15:00||SYWH 1.1||Hauptvortrag: Engineering 2D materials with a twist — •Cory Dean|
|15:30||SYWH 1.2||Hauptvortrag: Flat Bands and Correlated Electronic States in Two Dimensional Atomic Crystals — •Eva Y. Andrei|
|16:00||SYWH 1.3||Hauptvortrag: Lightwave electronics and valleytronics in van der Waals layered materials — •Rupert Huber|
|16:30||SYWH 1.4||Hauptvortrag: Interaction and Topological Effects in Atomically Thin Two-dimensional Materials — •Steven G. Louie|
|17:00||SYWH 1.5||Hauptvortrag: Excitons in 2D Semiconductors and Heterostructures — •Alexander Högele|