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Absence of a giant spin Hall effect in plasma-hydrogenated graphene
Tobias Völkl, Denis Kochan, Thomas Ebnet +8
The weak spin-orbit interaction in graphene was predicted to be increased, e.g., by hydrogenation. This should result in a sizable spin Hall effect (SHE). We employ two different m…
Ultralong spin lifetimes in one-dimensional semiconductor nanowires
Florian Dirnberger, Michael Kammermeier, Jan König +9
We experimentally demonstrate ultralong spin lifetimes of electrons in the one-dimensional (1D) quantum limit of semiconductor nanowires. Optically probing single wires of differen…
Direct observation of ultrafast exciton formation in monolayer WSe
Philipp Steinleitner, Philipp Merkl, Philipp Nagler +5
Many of the fundamental optical and electronic properties of atomically thin transition metal dichalcogenides are dominated by strong Coulomb interactions between electrons and hol…
Momentum-space indirect interlayer excitons in transition metal dichalcogenide van der Waals heterostructures
Jens Kunstmann, Fabian Mooshammer, Philipp Nagler +9
Monolayers of transition metal dichalcogenides (TMDCs) feature exceptional optical properties that are dominated by excitons, tightly bound electron-hole pairs. Forming van der Waa…
Zeeman Splitting and Inverted Polarization of Biexciton Emission in Monolayer WS2
Philipp Nagler, Mariana V. Ballottin, Anatolie A. Mitioglu +8
We investigate the magnetic-field-induced splitting of biexcitons in monolayer WS using polarization-resolved photoluminescence spectroscopy in out-of-plane magnetic fields up…