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Magnetic-Field-Induced Rotation of Polarized Light Emission from Monolayer WS_{2}. | LitMetric

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Article Abstract

We control the linear polarization of emission from the coherently emitting K^{+} and K^{-} valleys (valley coherence) in monolayer WS_{2} with an out-of-plane magnetic field of up to 25 T. The magnetic-field-induced valley Zeeman splitting causes a rotation of the emission polarization with respect to the excitation by up to 35° and reduces the polarization degree by up to 16%. We explain both of these phenomena with a model based on two noninteracting coherent two-level systems. We deduce that the coherent light emission from the valleys decays with a time constant of τ_{c}=260  fs.

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http://dx.doi.org/10.1103/PhysRevLett.117.077402DOI Listing

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