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Excitonic Valley Effects in Monolayer WS2 under High Magnetic Fields

Plechinger, Gerd ; Nagler, Philipp ; Arora, Ashish ; Granados del Águila, Andrés ; Ballottin, Mariana V. ; Frank, Tobias ; Steinleitner, Philipp ; Gmitra, Martin ; Fabian, Jaroslav ; Christianen, Peter C. M. ; Bratschitsch, Rudolf ; Schüller, Christian ; Korn, Tobias



Abstract

Transition-metal dichalcogenides can be easily produced as atomically thin sheets, exhibiting the possibility to optically polarize and read out the valley pseudospin of extremely stable excitonic quasiparticles present in these 2D semiconductors. Here, we investigate a monolayer of tungsten disulfide in high magnetic fields up to 30 T-via photoluminescence spectroscopy at low temperatures. The ...

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