232 citations · 2.8k across the 62 of their papers we have counts for
9 papers · 1 filter
Exciton diffusion in monolayer semiconductors with suppressed disorder
Jonas Zipfel, Marvin Kulig, Raül Perea-Causín +8
Tightly bound excitons in monolayer semiconductors represent a versatile platform to study two-dimensional propagation of neutral quasiparticles. Their intrinsic properties, howeve…
Ultrafast transition between exciton phases in van der Waals heterostructures
Philipp Merkl, Fabian Mooshammer, Philipp Steinleitner +11
Heterostructures of atomically thin van der Waals bonded monolayers have opened a unique platform to engineer Coulomb correlations, shaping excitonic, Mott insulating, or supercond…
Quenching of Intervalley Exchange Coupling in the Presence of Momentum-Dark States in TMDCs
Malte Selig, Florian Katsch, Samuel Brem +3
Monolayers of transition metal dichalcogenides are promising materials for valleytronic applications, since they possess two individually addressable excitonic transitions at the n…
Negative excitonic diffusion in transition metal dichalcogenides
Roberto Rosati, Raül Perea-Causín, Samuel Brem +1
While exciton relaxation in transition metal dichalcogenides (TMDs) has been intensively studied, spatial exciton propagation has received only little attention - in spite of being…
Optical fingerprint of bright and dark localized excitonic states in atomically thin 2D materials
Maja Feierabend, Samuel Brem, Ermin Malic
Point defects, local strain or impurities can crucially impact the optical response of atomically thin two-dimensional materials as they offer trapping potentials for excitons. The…
Exciton propagation and halo formation in two-dimensional materials
Raul Perea-Causin, Samuel Brem, Roberto Rosati +6
The interplay of optics, dynamics and transport is crucial for the design of novel optoelectronic devices, such as photodetectors and solar cells. In this context, transition metal…