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Controlled coherent-coupling and dynamics of exciton complexes in a MoSe2 monolayer

Version 1.0

Rodek, Aleksander; Hahn, Thilo; Howarth, James; Taniguchi, Takashi; Watanabe, Kenji; Potemski, Marek; Kossacki, Piotr; Wigger, Daniel; Kasprzak, Jacek, 2023, "Controlled coherent-coupling and dynamics of exciton complexes in a MoSe2 monolayer", https://doi.org/10.18150/063GR4, RepOD, V1

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Description

The experimental/theoretical data presented is related to the article "Controlled coherent-coupling and dynamics of exciton complexes in a MoSe2 monolayer"


Quantifying and controlling the coherent dynamics and couplings of optically active excitations in solids is of paramount importance in fundamental reasearch in condensed matter optics and for their prospective optoelectronic applications in quantum technologies. Here, we perform ultrafast coherent nonlinear spectroscopy of a chargetunable MoSe2 monolayer. The experiments show that the homogeneous and inhomogenenous line width and the population decay of exciton complexes hosted by this material can be directly tuned by an applied gate bias, which governs the Fermi level and therefore the free carrier density. By performing two-dimensional spectroscopy, we also show that the same bias-tuning approach permits us to control the coherent coupling strength between charged and neutral exciton complexes.

Subject
Physics
Keyword

coherent coupling, transition metal dichalcogenides, excitons, Four Wave Mixing, coherent time-resolved spectroscopy

Related Publication

Aleksander Rodek, Thilo Hahn, James Howarth, Takashi Taniguchi, Kenji Watanabe, Marek Potemski, Piotr Kossacki, Daniel Wigger and Jacek Kasprzak 2023 2D Mater. in press
"Controlled coherent-coupling and dynamics of exciton complexes in a MoSe2 monolayer"
https://doi.org/10.1088/2053-1583/acc59a https://iopscience.iop.org/article/10.1088/2053-1583/acc59a doi: 10.1088/2053-1583/acc59a

CC BY - Creative Commons Attribution 4.0 CC BY - Creative Commons Attribution 4.0

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Fig1.zip
ZIP Archive - 20.6 MB - Mar 30, 2023 - 25 Downloads
MD5: d4bfbda34fe831a70a9b52be44b1f264
License: CC BY - Creative Commons Attribution 4.0
Figure 1 data. Four-Wave-Mixing map of the sample and exciton reflection vs gate bias. Data in .txt format.
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Fig2.zip
ZIP Archive - 51.1 KB - Mar 30, 2023 - 19 Downloads
MD5: fbab4670c7b879a39398d8f314b2114a
License: CC BY - Creative Commons Attribution 4.0
Figure 2 data. Neutral exciton Four-Wave-Mixing vs tau12 and real time. Neutral and charged exciton dephasing dynamics. Neutral and charged exciton homogeneous and inhomogeneous broadening vs gate biase. Data in .txt format.
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Fig3.zip
ZIP Archive - 16.3 KB - Mar 30, 2023 - 13 Downloads
MD5: b0d9193974461f76bd14261577403884
License: CC BY - Creative Commons Attribution 4.0
Figure 3 data. Neutral and charged exciton population dynamics for selected gate biases and the extracted lifetimes. Data in .txt format
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Fig4.zip
ZIP Archive - 1.2 MB - Mar 30, 2023 - 20 Downloads
MD5: bc3db4a8c9b11d02bfdbc4489e75d671
License: CC BY - Creative Commons Attribution 4.0
Figure 4 data. Four-Wave-Mixing amplitude of charged and neutral exciton with the reference spectrum of the excitation laser. Neutral and charged exciton population dynamics under simultanous excitation: experiment and simulation. Data in .txt format
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Fig5.zip
ZIP Archive - 10.6 MB - Mar 30, 2023 - 15 Downloads
MD5: 62cb87da46639c9c22ab28b6260817d7
License: CC BY - Creative Commons Attribution 4.0
Figure 5 data. 2D Four-Wave-Mixing spectra of charged and neutral excitons for selected gate biases and the extracted peak amplitudes vs gate bias. Data in .txt format.
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