A5003327287- 2D Materials and Applications
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Advanced Condensed Matter Physics
- Magnetic properties of thin films
- Quantum, superfluid, helium dynamics
- Semiconductor Quantum Structures and Devices
- Magnetic and transport properties of perovskites and related materials
University of Bremen
2023-2024
Transition metal dichalcogenides (TMDs) are quantum confined systems with interesting optoelectronic properties, governed by Coulomb interactions in the monolayer (1L) limit, where strongly bound excitons provide a sensitive probe for many-body interactions. Here, we use two-dimensional electronic spectroscopy (2DES) to investigate and their dynamics 1L-WS
Exciton-exciton interactions are key to understanding nonlinear optical and transport phenomena in van der Waals heterobilayers, which emerged as versatile platforms study correlated electronic states. We present a combined theory-experiment of excitonic many-body effects based on first-principle band structures Coulomb interaction matrix elements. Key our approach is the explicit treatment fermionic substructure excitons dynamical screening for density-induced energy renormalization...
The Dzyaloshinskii-Moriya interaction (DMI) causes domain walls in perpendicular magnetized systems to adopt a homochiral configuration by winding the same direction for both Up-Down and Down-Up walls. topology of these is then distinct from uniformly state. When two approach each other are close proximity they form pairs, stabilized dipolar repulsion. This can result formation 360 ° stable walls, whose stability directly related magnitude additional resulting spin structure governed DMI....
Exciton-exciton interactions are key to understanding non-linear optical and transport phenomena in van der Waals heterobilayers, which emerged as versatile platforms study correlated electronic states. We present a combined theory-experiment of excitonic many-body effects based on first-principle band structures Coulomb interaction matrix elements. Key our approach is the explicit treatment fermionic substructure excitons dynamical screening for density-induced energy renormalization...