76 citations · 162 across the 6 of their papers we have counts for
9 papers
Robust excitons across the phase transition of two-dimensional hybrid perovskites
Jonas D. Ziegler, Kai-Qiang Lin, Barbara Meisinger +11
Two-dimensional halide perovskites are among intensely studied materials platforms profiting from solution based growth and chemical flexibility. They feature exceptionally strong…
Spectral asymmetry of phonon sideband luminescence in monolayer and bilayer WSe2
Victor Funk, Koloman Wagner, Edith Wietek +8
We report an experimental study of temperature-dependent spectral lineshapes of phonon side-band emission stemming from dark excitons in monolayer and bilayer WSe. Using phot…
Nonclassical Exciton Diffusion in Monolayer WSe2
Koloman Wagner, Jonas Zipfel, Roberto Rosati +9
We experimentally demonstrate time-resolved exciton propagation in a monolayer semiconductor at cryogenic temperatures. Monitoring phonon-assisted recombination of dark states, we…
Non-equilibrium diffusion of dark excitons in atomically thin semiconductors
Roberto Rosati, Koloman Wagner, Samuel Brem +7
Atomically thin semiconductors provide an excellent platform to study intriguing many-particle physics of tightly-bound excitons. In particular, the properties of tungsten-based tr…
Autoionization and dressing of excited excitons by free carriers in monolayer WSe2
Koloman Wagner, Edith Wietek, Jonas D. Ziegler +6
We experimentally demonstrate dressing of the excited exciton states by a continuously tunable Fermi sea of free charge carriers in a monolayer semiconductor. It represents an unus…
Light-matter coupling and non-equilibrium dynamics of exchange-split trions in monolayer WS2
Jonas Zipfel, Koloman Wagner, Jonas D. Ziegler +4
Monolayers of transition metal dichalcogenides present an intriguing platform to investigate the interplay of excitonic complexes in two dimensional semiconductors. Here, we use op…