TY  - JOUR
AU  - Borghardt, Sven
AU  - Sonntag, Jens
AU  - Tu, Jhih-Sian
AU  - Taniguchi, Takashi
AU  - Watanabe, Kenji
AU  - Beschoten, Bernd
AU  - Stampfer, Christoph
AU  - Kardynal, Beata
TI  - Radially polarized light beams from spin-forbidden dark excitons and trions in monolayer WSe 2
JO  - Optical materials express
VL  - 10
IS  - 5
SN  - 2159-3930
CY  - Washington, DC
PB  - OSA
M1  - FZJ-2020-01564
SP  - 1273 -
PY  - 2020
AB  - The rich optical properties of transition metal dichalcogenide monolayers (TMD-MLs) render these materials promising candidates for the design of new optoelectronic devices. Despite the large number of excitonic complexes in TMD-MLs, the main focus has been placed on optically bright neutral excitons. Spin-forbidden dark excitonic complexes have been addressed for basic science purposes, but not for applications. We report on spin-forbidden dark excitonic complexes in ML WSe2 as an ideal system for the facile generation of radially polarized light beams. Furthermore, the spatially resolved polarization of photoluminescence beams can be exploited for basic research on excitons in two-dimensional materials.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000530888200014
DO  - DOI:10.1364/OME.388913
UR  - https://juser.fz-juelich.de/record/874645
ER  -