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- W4361268932 abstract "Triggered by the expanding demands of semiconductor devices, strain engineering of two-dimensional transition metal dichalcogenides (TMDs) has garnered considerable research interest. Through steady-state measurements, strain has been proved in terms of its modulation of electronic energy bands and optoelectronic properties in TMDs. However, the influence of strain on the spin-orbit coupling as well as its related valley excitonic dynamics remains elusive. Here, we demonstrate the effect of strain on the excitonic dynamics of monolayer WS2 via steady-state fluorescence and transient absorption spectroscopy. Combined with theoretical calculations, we found that tensile strain can reduce the spin-splitting value of the conduction band and lead to transitions between different exciton states via spin-flip mechanism. Our findings suggest that the spin-flip process is strain-dependent, provides a reference for application of valleytronic devices, where tensile strain is usually existing during their design and fabrication." @default.
- W4361268932 created "2023-03-31" @default.
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- W4361268932 date "2023-03-30" @default.
- W4361268932 modified "2023-10-17" @default.
- W4361268932 title "Strain-Dependent Band Splitting and Spin-Flip Dynamics in Monolayer WS<sub>2</sub>" @default.
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- W4361268932 doi "https://doi.org/10.1021/acs.nanolett.3c00771" @default.
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- W4361268932 hasPublicationYear "2023" @default.
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