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12 papers · 2 filters
Theory of interlayer exciton dynamics in 2D TMDCs Heterolayers under the influence of strain reconstruction and disorder
Marten Richter
Monolayers of transition metal dichalcogenides (TMDC) became one of the most studied nanostructures in the last decade. Combining two different TMDC monolayers results in a heteros…
Fermionic vs. bosonic thermalization in the phonon-driven exciton dynamics: An analytic dimensionality study
Manuel Katzer, Malte Selig, Andreas Knorr
Excitons are compound particles formed from an electron and a hole in semiconductors. The impact of this substructure on the phonon-exciton interaction is described by a closed sys…
Controlled Coherent Coupling in a Quantum Dot Molecule Revealed by Ultrafast Four-Wave Mixing Spectroscopy
Daniel Wigger, Johannes Schall, Marielle Deconinck +18
Semiconductor quantum dot molecules are considered as promising candidates for quantum technological applications due to their wide tunability of optical properties and coverage of…
Theory of radial oscillations in metal nanoparticles driven by optically induced electron density gradients
Robert Salzwedel, Andreas Knorr, Dominik Hoeing +2
We provide a microscopic approach to describe the onset of radial oscillation of a silver nanoparticle. Using the Heisenberg equation of motion framework, we find that the coupled…
Exciton-phonon-scattering: A competition between bosonic and fermionic nature of bound electron-hole pairs
Manuel Katzer, Malte Selig, Lukas Sigl +7
The question of macroscopic occupation and spontaneous emergence of coherence for exciton ensembles has gained renewed attention due to the rise of van der Waals heterostructures m…
Interlayer excitons in semiconductor bilayers under a strong electric field
S. Kovalchuk, K. Greben, A. Kumar +7
Excitons in bilayer transition metal dichalcogenides (2L-TMDs) are Coulomb-bound electron/hole pairs that can be viewed as broadly tunable analogs of atomic or molecular systems. H…