Title :
Ultrafast Coulomb intervalley interaction in monolayer WS2
Author :
Schmidt, Robert ; Berghauser, Gunnar ; Malic, Ermin ; Knorr, Andreas ; Schneider, Robert ; Tonndorf, Philipp ; de Vasconcellos, Steffen Michaelis ; Bratschitsch, Rudolf
Author_Institution :
Inst. of Phys. & Center for Nanotechnol., Univ. of Munster, Munster, Germany
Abstract :
We reveal the ultrafast intervalley dynamics in monolayer WS2 with a spectrally-resolved ultrafast pump-probe experiment and a microscopic theory. We find strong intervalley Coulomb coupling in the atomically thin semiconductor.
Keywords :
high-speed optical techniques; monolayers; optical pumping; semiconductor materials; tungsten compounds; WS2; atomically thin semiconductor; intervalley Coulomb coupling; microscopic theory; monolayer; spectrally-resolved ultrafast pump-probe experiment; ultrafast Coulomb intervalley interaction; ultrafast intervalley dynamics; Couplings; Delay effects; Excitons; Photoluminescence; Probes; Semiconductor device measurement; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
