Efficient generation of neutral and charged biexcitons in encapsulated WSe2 monolayers

Nature Communications
Ziliang YeTony F Heinz

Abstract

Higher-order correlated excitonic states arise from the mutual interactions of excitons, which generally requires a significant exciton density and therefore high excitation levels. Here, we report the emergence of two biexcitons species, one neutral and one charged, in monolayer tungsten diselenide under moderate continuous-wave excitation. The efficient formation of biexcitons is facilitated by the long lifetime of the dark exciton state associated with a spin-forbidden transition, as well as improved sample quality from encapsulation between hexagonal boron nitride layers. From studies of the polarization and magnetic field dependence of the neutral biexciton, we conclude that this species is composed of a bright and a dark excitons residing in opposite valleys in momentum space. Our observations demonstrate that the distinctive features associated with biexciton states can be accessed at low light intensities and excitation densities.

References

Jun 19, 2012·Nature Nanotechnology·Kin Fai MakTony F Heinz
Jul 26, 2014·Physical Review Letters·Keliang HeJie Shan
Aug 30, 2014·Physical Review Letters·Alexey ChernikovTony F Heinz
Jan 24, 2015·Physical Review Letters·Yilei LiTony F Heinz
Feb 7, 2015·Physical Review Letters·David MacNeillDaniel C Ralph
Oct 1, 2015·Nano Letters·David K ZhangKálmán Varga
Jan 2, 2016·Physical Review Letters·Xiao-Xiao ZhangTony F Heinz
Sep 3, 2016·Nature Communications·Gerd PlechingerTobias Korn
Jun 27, 2017·Nature Nanotechnology·Xiao-Xiao ZhangTony F Heinz
Jun 29, 2017·Nature Communications·Kai HaoGalan Moody
Nov 22, 2017·Nature Nanotechnology·Kyoung-Duck ParkMarkus B Raschke

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Citations

May 28, 2019·Nature Communications·T P LyonsA I Tartakovskii
Jul 5, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jhih-Sian TuBeata E Kardynał
Dec 6, 2019·Nature Communications·Paul D CunninghamBerend T Jonker
Jun 7, 2019·Nature Communications·Zhipeng LiSu-Fei Shi
Mar 16, 2019·Scientific Reports·Helena BragançaGilmar Eugenio Marques
Aug 7, 2019·Physical Review Letters·Erfu LiuChun Hung Lui
Jul 10, 2019·Physical Review Letters·Dinh Van TuanHanan Dery
Jun 21, 2020·Nature Communications·Zhipeng LiSu-Fei Shi
Aug 6, 2020·The Review of Scientific Instruments·Eric Yue MaTony F Heinz
Nov 9, 2019·Physical Review Letters·Ashish AroraRudolf Bratschitsch
Jul 28, 2020·The Journal of Chemical Physics·Jonas ZipfelAlexey Chernikov
Sep 30, 2018·Nature Nanotechnology·Cedric Robert
Feb 1, 2020·Nature Communications·Minhao HeXiaodong Xu
Jan 26, 2021·Nano Letters·Carlo BradacIgor Aharonovich
Jan 16, 2021·Physical Review Letters·Koloman WagnerAlexey Chernikov
Dec 22, 2020·Advanced Science·Linglong ZhangYuerui Lu
Dec 5, 2020·Science·Meng Xing Na, Ziliang Ye
Mar 10, 2021·The Journal of Chemical Physics·Matthew R CarboneDavid R Reichman
May 5, 2021·Chemical Society Reviews·Yanping LiuXidong Duan
Jun 12, 2021·Physical Review Letters·Yeongsu ChoTimothy C Berkelbach
Mar 13, 2019·Nano Letters·Shao-Yu ChenJun Yan
Jun 13, 2019·The Journal of Physical Chemistry Letters·Pieter GeiregatZeger Hens
Sep 7, 2019·Nano Letters·Zhipeng LiSu-Fei Shi
Apr 14, 2020·Nano Letters·Itai EpsteinFrank H L Koppens
Sep 14, 2019·Nano Letters·Junyong WangGoki Eda
Aug 31, 2021·Physical Review Letters·Koloman WagnerAlexey Chernikov
Dec 23, 2021·ACS Nano·Bumho KimJames Hone
Jan 4, 2022·Nano Letters·Marko M PetrićJonathan J Finley

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