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Optical properties of atomically thin transition metal dichalcogenides: Observations and puzzles
M. Koperski, M. R. Molas, A. Arora +4
Recent results on the optical properties of mono- and few-layers of semiconducting transition metal dichalcogenides are reviewed. Experimental observations are presented and discus…
Brightening of dark excitons in monolayers of semiconducting transition metal dichalcogenides
M. R. Molas, C. Faugeras, A. O. Slobodeniuk +4
We present low temperature magneto-photoluminescence experiments which demonstrate the brightening of dark excitons by an in-plane magnetic field applied to monolayers of diffe…
Radiatively limited dephasing and exciton dynamics in MoSe monolayers
Tomasz Jakubczyk, Valentin Delmonte, Maciej Koperski +5
By implementing four-wave mixing (FWM) micro-spectroscopy we measure coherence and population dynamics of the exciton transitions in monolayers of MoSe. We reveal their dephasi…
Magneto-optical signature of massless Kane electrons in Cd3As2
A. Akrap, M. Hakl, S. Tchoumakov +21
We report on optical reflectivity experiments performed on Cd3As2 over a broad range of photon energies and magnetic fields. The observed response clearly indicates the presence of…
Experimental approval of the extended flat bands and gapped subbands in rhombohedral multilayer graphene
Y. Henni, H. P. Ojeda Collado, K. Nogajewski +6
Graphene layers are known to stack in two stable configurations, namely ABA or ABC stacking, with drastically distinct electronic properties. Unlike the ABA stacking, little has be…