205 citations · 315 across the 2 of their papers we have counts for
6 papers
Inducing a many-body topological state of matter through Coulomb-engineered local interactions
Malte Rösner, Jose L. Lado
The engineering of artificial systems hosting topological excitations is at the heart of current condensed matter research. Most of these efforts focus on single-particle propertie…
Coulomb-Engineered Heterojunctions and Dynamical Screening in Transition Metal Dichalcogenide Monolayers
Christina Steinke, Tim O. Wehling, Malte Rösner
The manipulation of two-dimensional materials via their dielectric environment offers novel opportunities to control electronic as well as optical properties and allows to imprint…
Electronic and Optical properties of transition metal dichalcogenides under symmetric and asymmetric field-effect doping
Peiliang Zhao, Jin Yu, H. Zhong +3
Doping via electrostatic gating is a powerful and widely used technique to tune the electron densities in layered materials. The microscopic details of how these setups affect the…
Observation of exciton redshift-blueshift crossover in monolayer WS2
Edbert J. Sie, Alexander Steinhoff, Christopher Gies +10
We report a rare atom-like interaction between excitons in monolayer WS2, measured using ultrafast absorption spectroscopy. At increasing excitation density, the exciton resonance…
Excitons versus electron-hole plasma in monolayer transition metal dichalcogenide semiconductors
Alexander Steinhoff, Matthias Florian, Malte Rösner +3
When electron-hole pairs are excited in a semiconductor, it is a priori not clear if they form a fermionic plasma of unbound particles or a bosonic exciton gas. Usually, the excito…
Electric-field switchable second-harmonic generation in bilayer MoS by inversion symmetry breaking
Julian Klein, Jakob Wierzbowski, Alexander Steinhoff +8
We demonstrate pronounced electric-field-induced second-harmonic generation in naturally inversion symmetric 2H stacked bilayer MoS embedded into microcapacitor devices. By a…