7 papers
Ab-initio studies of exciton factors: Monolayer transition metal dichalcogenides in magnetic fields
Thorsten Deilmann, Peter Krüger, Michael Rohlfing
The effect of a magnetic field on the optical absorption in semiconductors has been measured experimentally and modeled theoretically for various systems in previous decades. We pr…
Light-matter interaction in van der Waals heterostructures
Thorsten Deilmann, Michael Rohlfing, Ursula Wurstbauer
Even if individual two-dimensional materials own various interesting and unexpected properties, the stacking of such layers leads to van der Waals solids which unite the characteri…
Dark trions govern the temperature-dependent optical absorption and emission of doped atomically thin semiconductors
Ashish Arora, Nils Kolja Wessling, Thorsten Deilmann +7
We perform absorption and photoluminescence spectroscopy of trions in hBN-encapsulated WSe, WS, MoSe, and MoS monolayers, depending on temperature. The different tr…
Inelastic electron tunneling spectroscopy for probing strongly correlated many-body systems by scanning tunneling microscopy
Fabian Eickhoff, Elena Kolodzeiski, Taner Esat +7
We present an extension of the tunneling theory for scanning tunneling microcopy (STM) to include different types of vibrational-electronic couplings responsible for inelastic cont…
Discovering new two-dimensional topological insulators from computational screening
Thomas Olsen, Erik Andersen, Takuya Okugawa +3
We have performed a computational screening of topological two-dimensional (2D) materials from the Computational 2D Materials Database (C2DB) employing density functional theory. A…
Three-particle correlation from a Many-Body Perspective: Trions in a Carbon Nanotube
Thorsten Deilmann, Matthias Drüppel, Michael Rohlfing
Trion states of three correlated particles (e.g., two electrons and one hole) are essential to understand the optical spectra of doped or gated nanostructures, like carbon nanotube…