232 citations · 447 across the 9 of their papers we have counts for
9 papers
Emergent Trion-Phonon Coupling in Atomically-Reconstructed MoSe-WSe Heterobilayers
Sebastian Meier, Yaroslav Zhumagulov, Matthias Dietl +8
In low-temperature resonant Raman experiments on MoSe-WSe heterobilayers, we identify a hybrid interlayer shear mode (HSM) with an energy, close to the interlayer shear mod…
Valley-magnetophonon resonance for interlayer excitons
D. S. Smirnov, J. Holler, M. Kempf +8
Heterobilayers consisting of MoSe and WSe monolayers can host optically bright interlayer excitons with intriguing properties such as ultralong lifetimes and pronounced cir…
Interlayer exciton valley polarization dynamics in large magnetic fields
Johannes Holler, Malte Selig, Michael Kempf +11
In van der Waals heterostructures (HS) consisting of stacked MoSe and WSe monolayers, optically bright interlayer excitons (ILE) can be observed when the constituent layers…
Large-scale mapping of moiré superlattices by Raman imaging of interlayer breathing mode and moiré phonons
Kai-Qiang Lin, Johannes Holler, Jonas M. Bauer +6
Moiré superlattices can induce correlated-electronic phases in twisted van-der-Waals materials. Strongly correlated quantum phenomena emerge, such as superconductivity and the Mott…
Low-frequency Raman scattering in WSe-MoSe heterobilayers: Evidence for atomic reconstruction
Johannes Holler, Sebastian Meier, Michael Kempf +5
We investigate WSe-MoSe heterobilayers with different twist angles between the two layers, by low-frequency Raman scattering. In sufficiently aligned samples with…
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…
Air tightness of hBN encapsulation and its impact on Raman spectroscopy of van der Waals materials
Johannes Holler, Lorenz Bauriedl, Tobias Korn +8
Raman spectroscopy is a precious tool for the characterization of van der Waals materials, e.g. for the determination of the layer number in thin exfoliated flakes. For sensitive m…
Spatial extent of the excited exciton states in WS monolayers from diamagnetic shifts
Jonas Zipfel, Johannes Holler, Anatolie A. Mitioglu +9
We experimentally study the radii of excitons in hBN-encapsulated WS2 monolayers by means of magneto-optical reflectance spectroscopy at cryogenic temperatures in magnetic fields u…
Asymmetric tensor in low-symmetry two-dimensional hole systems
C. Gradl, R. Winkler, M. Kempf +8
The complex structure of the valence band in many semiconductors leads to multifaceted and unusual properties for spin-3/2 hole systems compared to typical spin-1/2 electron system…