Journal Article

FZJ-2020-01564

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Radially polarized light beams from spin-forbidden dark excitons and trions in monolayer WSe 2

Borghardt, S.FZJ* ; Sonntag, J.FZJ* ; Tu, J.-S.FZJ* ; Taniguchi, T. ; Watanabe, K. ; Beschoten, B.FZJ* ; Stampfer, C.FZJ* ; Kardynal, B. (Corresponding author)FZJ*

2020
OSA Washington, DC

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Please use a persistent id in citations: http://hdl.handle.net/2128/24834  doi:10.1364/OME.388913

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.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. JARA-FIT (JARA-FIT)
3. Helmholtz - Nanofacility (HNF)

Research Program(s):

1. 524 - Controlling Collective States (POF3-524) (POF3-524)

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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