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@ARTICLE{Borghardt:874645,
      author       = {Borghardt, Sven and Sonntag, Jens and Tu, Jhih-Sian and
                      Taniguchi, Takashi and Watanabe, Kenji and Beschoten, Bernd
                      and Stampfer, Christoph and Kardynal, Beata},
      title        = {{R}adially polarized light beams from spin-forbidden dark
                      excitons and trions in monolayer {WS}e 2},
      journal      = {Optical materials express},
      volume       = {10},
      number       = {5},
      issn         = {2159-3930},
      address      = {Washington, DC},
      publisher    = {OSA},
      reportid     = {FZJ-2020-01564},
      pages        = {1273 -},
      year         = {2020},
      abstract     = {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.},
      cin          = {PGI-9 / JARA-FIT / HNF},
      ddc          = {620},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)HNF-20170116},
      pnm          = {524 - Controlling Collective States (POF3-524)},
      pid          = {G:(DE-HGF)POF3-524},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000530888200014},
      doi          = {10.1364/OME.388913},
      url          = {https://juser.fz-juelich.de/record/874645},
}